Mobile Power Product Guide - Maxim Integrated · Mobile Power Product Guide . 2. 3 Fuel Gauges,...

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Product Guide

MOBILE POWER

2nd Edition

Table of Contents

www.maximintegrated.comMobile Power Product Guide

2

3 Fuel Gauges, Chargers, Battery Monitoring, and USB Management

11 Multifunction PMICs

14 Single-Function Step-Up/Down DC-DCs and LDOs

19 Selector Guide and Tables

www.maximintegrated.com Mobile Power Product Guide

3

Fuel Gauge Reports Battery State of Charge Accurately and Maximizes Battery LifeModelGauge™ Algorithm Eliminates Current-Sense Resistor and Other External Components to Save Cost and Space

ModelGauge m3 IC Accurately Reports Battery Capacity from System Side and Maximizes Battery LifeThe MAX17047 and MAX17050 Improve Coulomb Counting to Provide the Industry’s Best Accuracy • Load, temperature, and age compensation increase accuracy

• Continuous learning eliminates sudden SOC corrections

• Simple design reduces implementation cost

• Low component count saves board space

• Calibration-free to simplify manufacturing

• Maximize runtime with the industry's lowest supply current (4μA hibernate, 23μA active)

• Low-battery alert extends battery standby time and reduces software complexities

ONLY ONE EXTERNAL

COMPONENT

SYSTEMµP

MAX17048

VDD ALRT

SDA

SCL

CELL

QSTRT

CTG

GND

-10

-5

0

5

10

ERRO

R (%

)

0

25

50

75

100

SOC

(%

)

SOC ERROR REFERENCE SOC SOC

0 10 20 TIME (hr)

Competition’s 7% Error

SUDDEN JUMPS IN SOC -10

-5

0

5

10

ERRO

R (%

)

0

25

50

75

100

SOC

(%

)

SOC ERROR REFERENCE SOC SOC

0 10 20 TIME (hr)

ModelGauge m3 2% Error (MAX17047/MAX17050)

vs.


4

Safety, Security, and Accuracy for 1-Cell Li+ Batteries in a Tiny TDFNThe DS2784 delivers a complete fuel-gauging solution in a tiny 15mm2 footprint. It integrates a stand-alone fuel gauge is a single-cell Li+ protector and a SHA-1-based challenge-response authentication system.

• Li+ safety monitor with programmable thresholds for overvoltage and overcurrent

• SHA-1 security with 64-bit challenge, 64-bit secret, and 32-bit internal bus

• Precision voltage, temperature, and current measurements

• Available capacity reported as percent remaining and mAh remaining

• Gain and tempco calibration for using low-cost sense resistors

• 32-byte parameter EEPROM, 16-byte user EEPROM

• Tiny, 3mm x 5mm, lead-free, 14-pin TDFN package

Part 64-BitROM Interface Memory

(Bytes)Fuel

Gauge Li+ Protector Package(mm x mm)

DS2776 1-Wire® 64 EEPROM 2-cell Li+ 14-TDFN (3 x 5)

DS2778 2-Wire 64 EEPROM 2-cell Li+ 14-TDFN (3 x 5)

DS2780 1-Wire 40 EEPROM 1-cell Li+ — 8-TSSOP, 8-TDFN (3 x 4)

DS2781 1-Wire 40 EEPROM 1- or 2-cell Li+ — 8-TSSOP, 8-TDFN (3 x 4)

DS2782 — 2-Wire 40 EEPROM 1-cell Li+ — 8-TSSOP, 8-TDFN (3 x 4)

DS2784 1-Wire 40 EEPROM 1-cell Li+ 14-TDFN (3 x 5)

1kΩ 1kΩ 1kΩ 1kΩ150Ω

150Ω

5.1V

PK+

DATA

PK-

0.1µF 0.1µF

PLSDC CC

SNS

DQ

PIO

VDD

VIN

VSS

RSENSE

CP

DS2784


5

USB Charger Detection Enables Optimal Universal ChargingImagine a world where only one charger fits all your devices.

With the widespread deployment of USB ports in hotel rooms, planes, and automobiles, the increasing adoption of USB charging is making that vision a reality. The MAX14656* allows your mobile device to capitalize on USB’s ubiquity, while optimizing to the charge capability of each type of USB port and even proprietary USB adapters. And it's all done in a manner compliant to the latest USB charging recommendations**.

*Future product—contact factory for availability.

**USB Battery Charging Specification Revision 1.2

MAX14656

MAX8903_/MAX8934_

D+

D-

VBUS

ID

UART/AUDIO

USB HS

APPLICATIONSPROCESSOR

DCM/IUSB

BATTERY

I2C

INT

OVP

CO

NTR

OL

DPDT 15kV ESD

UNIVERSALCHARGER DETECTION

USB ID DETECTION

EXTERNAL CHARGER

5V

36VOVP


6

Protect Your Portable Device from Damage When Simultaneously Using Multiple Power SuppliesThe MAX14606/MAX14607 are high-voltage, high-current overvoltage protectors (OVPs) that feature reverse bias blocking capability so that two power sources can be safely interfaced simultaneously without damage to either one. In this design, two integrated back-to-back FETs prevent the voltage applied at the intended output from feeding back into the input. Without this reverse bias blocking, users are forced to use multiple discrete, space-consuming external components to protect the end equipment.

MAX14607

IN

1µF 1µF

VBUS

VIO

USBMICRO-AB

OTG ENFROM SYSTEM

EN

OUT

OVLO

ACOK

1µF

WIRELESS CHARGINGOR DOCKING STATION

CHARGER IN

CHARGER

APPLICATIONSPROCESSOR

VIO

MAX14607

IN

EN

OUT

OVLO

ACOK

Two integrated back-to-back FETS provide reverse bias blocking

Capable of up to 3A continuous current through a low, 54mΩ (typ) internal on-resistance

Q1

GATE DRIVER

SAFELY CONNECT MULTIPLE POWER SOURCES

Q2

SUITABLE FOR HIGH-POWER SYSTEMS

3A

MAX14607

IN OUT


7

Charge Safer with the Industry’s First Dual-Input Smart Charger with Advanced Temperature MonitoringThe MAX8934_ automatically adjusts charge current and termination voltage to meet JEITA recommendations for safe charging*. It integrates all circuitry for charging and switching the load between the battery and the external power.

*Follows charging recommendations per JEITA (Japan Electronics and Information Technology Industries Association) Standard, “A Guide to the Safe Use of Secondary Lithium Ion Batteries on Notebook–Type Personal Computers,” April 20, 2007.

SYS

LDO

GND

CHARGECURRENT

LOADCURRENT

BATT BATTERY

ACADAPTER

UP TO2A

CHARGEAND

SYS LOADSWITCHUSB

DC Q1

Q2

Q3

USBUP TO

1.5A

3.3V ALWAYS-ONLINEAR

REGULATOR

28-TQFN

4m m x 4 m m

TEMPMONITOR

Adjusts charge currentand voltage to a safe level,

no software needed

Withstands up to16V input voltage

Withstands up to9V input voltage

MAX8934_

System is supportedby adapter evenif battery is dead

SYSTEMLOAD

TEMPERATURE (°C)

FAST

-CH

ARG

E C

URR

ENT

(C)

0

1

0.5

10 25 45

T2T1

60 85

SAFETY REGION 1

SAFETY REGION 2

AUTOMATICALLY SETS MAXIMUM CHARGE RATE

CH

ARG

E TE

RMIN

ATIO

N V

OLT

AG

E (V

)

TEMPERATURE (°C)

0

4.2

4.1

4.0

4.075

±25mV

±25mV

10 25 45

T2T1

60 85

SAFETY REGION 1

SAFETY REGION 2

AUTOMATICALLY SETS CHARGE TERMINATION VOLTAGE


8

Battery Charger Simplifies USB Charging and Maximizes User ConvenienceUSB Charger* Automatically Enumerates with Host or Detects Adapter TypeThe MAX77301** is a linear battery charger for Bluetooth® headsets, cell phones, and other portable devices. Built-in USB enumeration automatically negotiates with the USB host to optimize charging current without processor intervention, thus eliminating the need for a separate CPU or system software. The MAX77301 includes Smart Power Selector™ circuitry to allow a portable device to operate with a discharged battery or no battery.

Saves Space and Cost

• Up to 0.9A charging with integrated pass element

• Internal power-path switch eliminates an external FET

• Needs no external CPU for charger detection or USB enumeration

• Packaged in a 2.38mm x 2.38mm WLP

Easy Implementation

• No extra software required for charger detection or USB enumeration

• Charger is stand alone

• Compliant with USB Battery Charging Specification, Revision 1.1

• I2C interface

• Supports JEITA safe charging

*USB charging protected by U.S. Patent #6,507,172.

**Future product—contact factory for availability.

Enumerate

Charge


9

Feature Competition MAX8903A MAX8903A Advantages

Input type (USB/DC) Single Dual/single Greater design flexibility

Input range (V, abs. max) 4.35 to 5.5, 7 4.15 to 16, 18 No external overvoltage-protection IC needed

UVLO/OVLO /— / Better design robustness

Switching frequency (MHz) 2.25 4 Smaller external components

BAT to SYS (RDSON) (mΩ) 180 50 Longer battery life and less heat

Output current (A, max) 1.2 2 Faster charge time

2A, DC-DC, Li+ Battery Charger Reduces Charge Time and Heat by 50%The energy-efficient MAX8903A Li+ battery charger utilizes its Smart Power Selector circuitry to operate with no battery or a deeply discharged battery when connected to external power. It optimizes limited USB or adapter power and charges the battery with input power not used by the system. The MAX8903A eliminates the need for external FETs, diodes, and sense resistors to simplify design and maximize board space.

The MAX8903A stays cool while competinglinear chargers heat up.

-

LINEARCHARGER

MAX8903ASWITCHING

CHARGER

Conditions:VIN: 5VVOUT: 3.4VICHARGE: 800mA

CHARGE ANDSYS LOADSWITCH

DC SYS

BAT

ACADAPTER

OR USB

GND

USBUSB

CHARGECURRENT LOAD

CURRENT

LX CS

PWMSTEP-DOWN

SYSTEMLOAD

BATTERY

50%faster50%faster50%faster

MAX8903A

+ Up to50% fastercharge rate

30%cooler


10

Charge Fast, Cool, and SafelyThe MAX8971 is the industry's smallest 1.55A charger that charges quickly with minimal heat generation. And it charges from a variety of adapters.

Maximizes Safety

• JEITA-compliant temperature monitoring

• Withstands transient inputs up to 22V

• Charge safety timer

• Thermal shutdown

• Adaptive input current limiting

Minimizes Heat

• Temperature regulation

• No external FETs or sense resistors

• Switch mode maximizes efficiency

• Low path resistance minimizes waste

Saves Space

• 3.25MHz switching requires only 2.0mm x 1.6mm inductor

• No external FETs or sense resistors

• Tiny 2.44mm x 2.67mm package

The Basics of USB Battery Charging: A Survival Guide Review the battery-charging survival guide in Maxim's Application Note 4803 at www.maximintegrated.com/AN4803 for more information.

AVL

BAT+

BAT-

SYSTEMLOAD

DC BYP

SCL

SDA

IRQB

I2CIN

VICHG

GND

AVL

PVL

SFO

DC1,DC2

BST

BYP

C12.2µF

25V0603

C74.7µF6.3V

0402C31µF

6.3V0402 C4

4.7µF6.3V

0402

C52.2µF6.3V0603

C21µF25V0603

C60.1µF0402

R1, 47mΩ0402

L1, 1µH2520

RTB0402 R2,

100kΩ

LX1,LX2

PG1,PG2

CS

BAT

THM

-0.3V TO +22VTOLERANT

4.0V TO 10V OPERATIONAL

µP

MAX8971

Competitor60°C

MAX897142°C


11

TINI Power SoCs Break Through the Integration Barrier in Portable PlatformsHalf the board area in smartphones and tablets is consumed by power, analog, mixed-signal, audio, and passive components. Maxim’s power SoCs integrate these functions in a single chip to free up real estate for new differentiating features and higher-capacity batteries.

• Integrate power and system functions into a single chip to save board space, reduce the bill of materials, and improve performance

• Highly efficient power-management functions extend battery life and reduce heat

• Built-in microcontroller and memory offload the applications processor and allow one design to be ported across multiple platforms

TINI® Power SoC

APPLICATIONS/BASEBAND

PROCESSORS

DISPLAY

TOUCH SCREENAND DISPLAY

BACKLIGHT POWER

TOUCH-SCREEN CONTROL

TACTILE FEEDBACK

DIGITAL/CONTROL/GPIO

SERIAL INTERFACE:I2C/SPI/JTAG

GPIO

RTC

PROCESSOR ANDSYSTEM POWER

HIGH-EFFICIENCYDC-DCs

HIGH-SPEED CORE DC-DCs WITH DVS

LOW-NOISE,HIGH-PSRR LDOs

AUDIO

HEADPHONE,MIC, SPEAKER

CODEC

HEADPHONE, MIC,SPEAKER AMPS

SENSORSSYSTEM

TEMP SENSOR

AMBIENT-LIGHTSENSOR

AMPS AND ADCs

MISC. ADC CHANNELS

INDICATORSKEYBOARD

VIBRATORLED AND MOTOR DRIVERS

MEMORY

LPDDR RAMDDR POWER

BATTERY MANAGEMENT

MAIN BATTERY

BATTERY

TOUCH SCREEN

USB

SPEAKER

HEADPHONES

USB/AC ADAPTER

BACKUP BATTERY

CHARGER WITH OVP AND Smart Power Selector CIRCUITRY

FUEL GAUGE

CONNECTORS

CURRENT-LIMIT ANDOVP PROTECTION

CAMERAS

LOW-NOISE POLREGULATORS

CAMERA FLASH

RADIO

ENVELOPE-TRACKINGRFPA POWER

3G/4G RADIO

MOBILE TV

BLUETOOTH/802.11

USB HOST

HIGH-RESOLUTIONCAMERA

VGA CAMERA

HDMI®

Li+

MICROCONTROLLER

DETECTOR AND SWITCH


12

Complete Power Management for Applications and Baseband Processors

• Five highly efficient step-down regulators

• Twenty LDOs

Dual-Input Li+ Battery Charger

• USB or AC adapter input

• Battery/power switchover

• 28V input protection

Audio Subsystem

• Class D mono amplifier

• DirectDrive® headset amplifier

• Programmable input mixer

ADC/Touch-Screen Controller

• 12-bit resolution

• Monitors charge current, battery, and die temperature

Additional Functionality

• Backup-battery charger

• SIM-level translator

• USB 3-wire transceiver

• RTC with alarms and 32kHz buffers

• TCXO buffers

• I2C interface for programming

Highly Integrated Power SoC Saves Cost and PCB Space in Smartphones

Customer Success StoryPowering the Applications and Baseband Processors

APPLICATIONS PROCESSOR

SYSTEM POWERMANAGEMENT,

AUDIO SUBSYSTEM,AND TOUCH-SCREEN

INTERFACE(5.85mm x 5.7mm)

APPLICATIONSμP

TVOUTPUT

MOBILETV

Bluetooth

LCD

KEYBOARD

CAMERAMODULE

SD™CARD

NOR/NAND

HI-SPEEDUSB

CODEC(2.7mm x 3.5mm)

BASEBANDµP

MAX9880A

MAX8906

1 005

1 0051 0051 005

1 005

1608 1608 1608 1608 1608

1608 1608 1608 1608 1608

1608 1608 1608 1608 1608

3216

MAX86605mm x 5mm

LTC40783mm x 3mm

MAX12373mm x 5mm

R20152mm x 2mm

WM97137mm x 7mm

4.2mm DIAMETERLITHIUM

MAX9705B2mm x 1.5mm

MAX9725B2mm x 1.5mm

MAX47362mm x 2mm

3216

3216

32161005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005 1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1005

1608 1608 1608

1608 1608 1608

1608 1608

1608

160

816

08

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

1608

0603

0603 0603

0603

0603

0603

0603

0603

1005

1005

1005

10051005

1005

1005

1005 1005

2012

1005

1005

1005

1005

1005

1005

1005

1005 1005 1005

1068

1005

1005

2828 2828 2828

2520

2520

0603

0603

0603

0603

0603

0603

0603

0603

0603

0603

0603

0603

4.2mm DIAMETERLITHIUM

MANGANESE

5.85mm x 5.7mm

2.7mm x 3.5mm

2016

2520

2012

2012

2012

3215

IC count: 9Component count: 121IC size (mm2): 161Component area (mm2) 321Estimated BOM: $2.11

IC count: 2Component count: 76IC size (mm2): 38Component area (mm2): 117Estimated BOM: $1.29

MAX8906 SmartphoneSolution

Conventional Smartphone Solution

PM66507mm x 7mm

1608

MAX8906

MAX9880A

BASEBAND PROCESSOR


13

Two Step-Down DC-DCs and Two LDOs Fit in a Tiny 3mm x 3mm TQFN• Ideal for powering small handheld devices

• Saves space with two DC-DC step-downs, and two LDOs in a 3mm x 3mm package

• Low noise, 45μVRMS output noise

• Individual enable pins add flexibility

Tiny Dual 2A Step-Down Converter with 6 LDOs The MAX8967* delivers versatile high-current, high-efficiency power sources in a very small solution footprint.

Minimizes Current Consumption

• Over 90% efficiency with internal synchronous rectifier

• Automatic skip mode at light loads

• Low 44μA no-load quiescent current

Reduces Board Area with Smaller Components

• 4.4MHz step-down switching allows for 1μH inductors

• COUT = 1μF for 150mA and 300mA LDOs

• Remote output capacitor capable

Programmable Voltage Options Allow Compatibility

• Step down converters programmable output voltage (0.6V to 3.3875V) through I2C bus

• LDO programmable output voltage (0.8V to 3.95V in 50mV steps)


INPUT2.6V TO 5.5V

1.7V TO 5.5V

1.65V TO 5.5V

1µH OUT20.6V TO3.3875V/

2A

0.8V TO 3.95V, 150mA

0.8V TO 3.95V, 300mA

0.8V TO 3.95V, 150mA

0.8V TO 3.95V, 150mA

0.8V TO 3.95V, 300mA

0.8V TO 3.95V, 150mA

I2C

1µH OUT10.6V TO3.3875V/

2A

IN2AV

IN1

MAX8967

INBAGND

VIO

VID1VID2

IRQB

INA

SCL LDO1

LX2

OUT2

LDO2

LDO3

LDO4

LDO5

LDO6

SDA

EN1EN2

PGND2

LX1

OUT1

PGND1

Li+

INPUT 2.8V TO 5.5V

IN12

HIGHLYFLEXIBLE

EN1

LX1OUT1

OUT2

OUT2

OUT3

OUT4

OUT1

DOWN TO 0.6V,UP TO 600mA

DOWN TO 0.6V,UP TO 1.2A

DOWN TO 1.2V,UP TO 300mA

IN34

LX2

EN2EN3EN4

REF

LDO

LDO

MAX8667

80% less power lossand 75% smaller than

discrete solution


14

Tiny PMIC Frees PCB for More Features or Larger Battery CellThe MAX8819_ is a complete power solution for portable applications. It integrates a battery charger, step-down converters, and WLED power. Maxim's Smart Power Selector circuitry enables instant on at adapter plug-in even with a fully discharged battery and intelligently rations power to both the system and the battery.

~88mm2 Solution Area, 1mm Solution Height

(Form-factor-optimized placement)

11.6mm

7.6m

m

2016

4mm x 4mm1608 1608

1005

06030603

0603

060

3 RESCAP

IC

DIODE

LEGEND

INDUCTOR

0603

1608 1608

2220

2016

2012 16

08

160

8

160

8

160

8

160

816

08

2016

MAX8819_

USB/AC-DCADAPTER

ENABLE SYSTEM

ENABLE CHARGER

ENABLE BACKLIGHT

SYS

DC

EN123

CEN

EN4

LX4

OVP4

FB4GND

OUT3

OUT2

BAT

SYS

Li+/Li-PolyBATTERY

I/O

MEMORY

CORE

OUT1MAX8819_

Automatically powers from an external source or battery: Smart Power Selector enables instant-on

in which the system can be powered up immediately from an adapter, even with a

missing or dead battery

Maximizes battery life: three 95% efficient,

2MHz step-downconverters

Cuts cost and size: integrated high-efficiency WLED step-up converter

Travel light: integrated charger eliminates the need for an additional

charger IC


15

Tiny 1mm x 1.5mm, 500mA Step-Down DC-DC Allows Flexible Board Layout• Consumes only 24μA

• Up to 4MHz switching

• Low 24μA quiescent current

• Evaluation (EV) kit available to speed designs

Advantages

• Dynamic voltage scaling

• 3.2MHz switching for small components

• 40.5mm2 solution size

• Better than 0.5% initial accuracy

DC-DC Step-Down Converter Allows Application Processors to Run FasterIndustry’s Smallest 2.5A Step-Down Converter with I²C ControlThe MAX8952 is a tiny, DC-DC step-down converter with high output current that enables application processors to run at their maximum clock speed to meet the demands of today’s multimedia applications in handheld devices. Designed to minimize your solution area, this 2mm x 2mm converter also ensures tight output-voltage accuracy for reliable, power-efficient operation.

Li+

1µH OR 2.2µH

2.2µFOR4.7µF

OUTPUT0.6V TO 2.5V

APPLICATIONPROCESSOR

BASEBANDCHIPSET

2.2µF

INPUT2.7V TO 4.9V

4MHz SWITCHING

HIGH EFFICIENCY (MAX8640Y)

LOAD (mA)

EFFI

CIEN

CY (%

)

0

10

20

30

40

50

60

70

80

90

100

0.1 1 10 100 1000

3.6VIN1.8VOUT

OFF

ON

GND

SHDN

OUT

LXIN

MAX8640YMAX8640Z

Li+

1µH OR 2.2µH

2.2µFOR4.7µF

OUTPUT0.6V TO 2.5V

APPLICATIONPROCESSOR

BASEBANDCHIPSET

2.2µF

INPUT2.7V TO 4.9V

4MHz SWITCHING

HIGH EFFICIENCY (MAX8640Y)

LOAD (mA)

EFFI

CIEN

CY (%

)

0

10

20

30

40

50

60

70

80

90

100

0.1 1 10 100 1000

3.6VIN1.8VOUT

OFF

ON

GND

SHDN

OUT

LXIN

MAX8640YMAX8640Z

I2C INTERFACE

VOLTAGECONTROL, VREF,

BIAS, ETC.

PWM LOGIC

CLOCK GENOSC

VDAC IN1

SNS-

SNS+

PGND

LX

IN2

AGNDVID1

VID0

EN

IN1

SDASCL

VDD

SYNC

MAX8952


16

High Efficiency Over a Wide Load Extends Battery Life

1.2A Step-Down DC-DC Achieves Up to 95% Efficiency, 16µA IQThe MAX1556/MAX1557 step-down DC-DC converters save battery life by having the lowest supply current under all operating conditions, including light load, heavy load, and dropout. These devices provide the fastest load and line-regulation responses of any parts in their class. Use them to get longer standby and operating times in your PDA, smartphone, digital camera, and other handheld devices.

• Single part has one adjustable and three fixed outputs

• Pin-programmable 3.3V, 2.5V, 1.8V, and adjustable outputs at 1.2A (MAX1556)

• Pin-programmable 1.5V, 1.3V, 1.0V, and adjustable outputs at 600mA (MAX1557)

• Analog soft-start with zero overshoot

• Tiny 10-pin, 3mm x 3mm TDFN package

100

0.1 10 1001 1000

95% EFFICIENCY AT 1mA

OUTPUT CURRENT (mA)

EFFI

CIEN

CY (%

)

70

80

90

VIN = 3.6V, 5.0V

VOUT = 3.3V

100%

LOAD-STEPRECOVERY

40µs

4µs

IQ INDROPOUT

388µA

27µA

SOFT-STARTINRUSH

CURRENT

500mA

100mA

LOADTRANSIENT

200mVP-P

50mVP-P

OUTPUTVOLTAGE

TOLERANCE

±3%

±2%

18µA

QUIESCENTCURRENT

16µA

80%

60%

40%

20%

0%

INDUSTRY’S LOWEST SUPPLY CURRENTS AND FASTEST RESPONSE TIMES

COMPETITION

MAXIM INTEGRATED

ONOFF

INPUT2.6V TO 5.5V

VOLTAGESELECT

OUTPUT0.75V TO VIN

C110µF

C40.47µF

R1100Ω C2

22µF

C31000pF

L13.3µH 1.2A

LX

SSSHDN

GND

PGND

OUT

INP

IN

D1

D2

MAX1556


17

• 92dB PSRR at 5kHz

• 16μVRMS output noise from 10Hz to 100kHz

• 500mA output current •±1.5%outputaccuracyoverload,line,andtemperature •100mVdropout

• 80μA operating supply current, < 1μA shutdown supply current

• Operates over the -40°C to +125°C automotive temperature range

Advanced Noise Reduction Results in Only 11µVRMS of Output Noise: MAX8840

• Tiny 1mm x 1.5mm x 0.8mm, 6-pin µDFN package

• 78dB PSRR at 1kHz

• Low 40µA ground current

• 120mV dropout at 120mA

• Adjustable or fixed output voltage

Industry's Highest PSRR and Lowest Output Noise Enable Noise-Sensitive Applications

Ultra-Low Noise LDO Saves Space Without Compromising Performance

FREQUENCY (kHz)

0.1 1 10 100

1000

100

10,000

100.01 1000

ULTRA-LOW NOISE PEFORMANCE(MAX8840)

OU

TPU

T N

OIS

E D

ENSI

TY (n

V/ √

Hz)

04021µF

04021µF

020110nF

2.6mm

1.5mm

6-µDFN

1m

m x 1.5 m m

SMALLEST SOLUTION: 3.9mm2

(MAX8840)

INDUSTRY’S SMALLEST 11µV LDO

LDO OUTPUT-NOISE SPECTRAL DENSITYvs. FREQUENCY (MAX8902A)

FREQUENCY (Hz)100k10k1k100

100

1k

10k

10

10 1M

PSRR vs. FREQUENCY (MAX8902A)

10k1k10010 100kFREQUENCY (Hz)

0

-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

PSRR

(dB

)

NO

ISE

DEN

SITY

(nV

/ √H

z)

OUTPUTDOWN TO 0.6V WITH

ONLY 100mV OF DROPOUT

10µF

INPUT1.7V TO 5.5V

0.01µF 10µF

OFF

ON

VOUTSELECTION

IN

EN

OUT

BYP

SELA

SELB

OUTS

GNDEP

MAX8902A


18

1A Step-Up Converter Saves Space and PowerDelivers Industry's Best-in-Class EfficiencySaves Space

• 2MHz PWM switching frequency for small external components

• True Shutdown™ circuitry eliminates need for external load switch

• Compact, 3mm x 3mm, 10-pin TDFN package

High Performance and Safety

• Up to 97% efficiency and low 30μA IQ

• Overvoltage and short-circuit protection, as well as thermal shutdown

• Controlled current in soft-start

• Low-noise, fixed-frequency operation (FPWM mode)

Tiny 1A Step-Up Converter with Track ModeSafe and Efficient Step-Up Mode

• Up to 1A output current

• Up to 96% efficiency

• Soft-start controls inrush current

• True Shutdown circuitry

• Low 1μA shutdown current

Compact Layout

• 3mm x 3.5mm solution size

• 1.25mm x 1.25mm WLP package

Track Modes

• Automatic or manual

• 130mΩ on-resistance

• 1A current limited

• Fast transition into boost

Applications

• Add-on for OTG boost

• Low cutoff voltage battery assist

ON

OFF

INPUT VOLTAGE1.2V TO 5.5V

OUTPUT VOLTAGE3.3V TO 5V

FPWM

SKIP

True Shutdowncircuitry eliminates

load switch

Forced PWMor skip mode

BATT LX

POUT

OUTS

FB

ON

SKIPB

GND

MAX8815A

EFFICIENCY vs. LOAD CURRENT,VOUT = 5V

OUTPUT CURRENT (mA)

EFFI

CIE

NC

Y (

%)

100101

10

20

30

40

50

60

70

80

90

100

00.1 1000

SKIPVIN = 3.6V, 3V, 2.4V, 1.8V, 1.5V

FPWMVIN = 4.2V, 3.6V, 3V, 2.4V, 1.8V, 1.5V

97%efficiency

SKIPVIN = 4.2V

INPUT2.5V TO 5.5V

OUTPUT3.3V TO 5V, 1A

CIN4.7µF

COUT22µF

L11µH

IN OUT_LX_

GND_

EN

MAX8969

TREN


19

Part ICHG(A, max)

Protected VIN (V, max) EV Kit Inputs Features Package

MAX8606 1 14 Yes 1 Smart Power Selector circuitry, safety timer, thermal regulation 14-TDFN

MAX8671X 1 14 Yes 2Smart Power Selector circuitry, safety timer, thermal regulation, part of a PMIC

40-QFN

MAX8677A 1.5 16 Yes 2 Smart Power Selector circuitry, safety timer, thermal regulation 24-TQFN

MAX8804_ 0.7 28 No 2 28V withstand, small size 8-TDFN

MAX8808_ 1 15 Yes 1 1A charging, tiny package 8-TDFN

MAX8814 0.6 28 Yes 1 28V withstand, smart autoboot assistant 8-TDFN

MAX8819_ 1 5.5 Yes 1Smart Power Selector circuitry, safety timer, thermal regulation, part of a PMIC

28-TQFN

MAX8895_ 1.85 14 Yes 1Smart Power Selector circuitry, auto-enumeration and charger type detect

25-WLP

MAX8900_ 1.2 22 Yes 1 Safe JEITA charging 30-WLP

MAX8971 1.55 22 Yes 1 Smallest 1.55A SMPS charger with JEITA 20-WLP

MAX8903_ 2 20 Yes 2Smart Power Selector circuitry, safety timer, switch mode for cool and fast charging

28-QFN

MAX8922L 1 30 No 1 30V withstand, GSM test mode 10-TDFN

MAX8934_ 1.5 14 Yes 2Smart Power Selector circuitry, safety timer, safe JEITA charging

32-QFN

MAX77301* 0.9 14 Yes 1

Smart Power Selector, auto-enumeration and charger detect, JEITA charge control, I2C programmable

25-WLP

Chargers



20

Part Description VIN(V, min)

VIN (V, max)

VOUT (V, min)

VOUT (V, max)

IOUT (A, max)

DC-DC Outputs

Oper. Freq. (kHz)

Features Package

MAX685

Dual-output (positive and negative), DC-DC converter for CCD and LCD

2.7 5.5 2.7 24 — 2 480

Current limiting, external sync., fixed-frequency PWM, internal power FETs

16-QSOP, 24-TQFN

MAX66828V, constant-frequency, current-mode PWM controller

3 28 3 100 6 1 500Current limiting, external power FETs, external sync., fixed-frequency PWM

10-µMAX®

MAX1705

1-to-3-cell, 1A, low-noise, step-up DC-DC converter with linear regulator

0.7 5.5 2.5 5.5 0.8 1 400

Current limiting, external sync., fixed-frequency PWM, internal power FETs, low-battery/POK output, synchronous rectifier

6-QSOP

MAX17221.5µA IQ, step-up DC-DC converter in thin 5-pin SOT23

0.8 5.5 2 5.5 0.15 1 —Current limiting, internal power FETs, synchronous rectifier

5-TSOT

MAX17631.5A, low-noise, 1MHz, step-up DC-DC converter

0.7 5.5 2.5 5.5 1.5 1 1000

Current limiting; fixed-frequency PWM, internal power FETs, synchronous rectifier

16-QSOP/TSSOP-EP

MAX1765800mA, low-noise, step-up DC-DC converter with 500mA linear regulator

1 5.5 1.25 5 0.8 1 1000Fixed-frequency PWM, internal power FETs, synchronous rectifier

16-QSOP/TSSOP-EP

MAX8569200mA step-up converter in 6-pin SOT23 and TDFN

1.5 5.5 1.23 5.5 0.25 1 —Current limiting, internal power FETs, reset output, synchronous rectifier

6-SOT/TDFN-EP

MAX8570High-efficiency LCD boost with True Shutdown circuitry

2.7 5.5 2.7 28 0.01 1 —Current limiting, internal power FETs, True Shutdown circuitry

6-µDFN/ SOT

MAX8614_

Dual-output (positive and negative) DC-DC converters for CCD and AMOLED

2.7 5.5 -15 7.5 0.125 2 1000

Current limiting, fixed-frequency PWM, internal power FETs, low-battery/POK output, True Shutdown circuitry

14-TDFN-EP

MAX8815A

1A, 97% efficiency, 30µA quiescent current, step-up converter with True Shutdown circuitry

1.2 5.5 1.265 5.5 1 1 2000

Current limiting, fixed-frequency PWM, internal power FETs, sync. rectifier, True Shutdown circuitry

10-TDFN-EP

MAX8969

1A simple step-up converter with True Shutdown circuitry and track mode

2.5 5.5 3 5 1 1 3000

Current limit, fixed frequency/PWM, internal power FETs, synchronous rectifier, True Shutdown circuitry, track mode

9-WLP

Step-Up Converters


VIN (V, max)

VOUT (V, min)

VOUT(V, max)

Output Adjust

Method

IOUT(A, max)

Oper. Freq. (kHz)

Features Package

MAX8625A

High-efficiency, seamless transition, step-up/down DC-DC converter

2.5 5.5 1.25 4 Preset or resistor 0.8A 1000

Current limiting, fixed-frequency PWM, internal power FETs, synchronous rectifier

14-TDFN-EP

Step-Up/Down Converter


21

Step-Down ConvertersPart Description VIN

(V, min)VIN

(V, max)VOUT

(V, min)VOUT

(V, max) IOUT

(A, max)DC-DC

Outputs

Oper. Freq. (kHz)

Features Package

MAX155616μA IQ, 1.2A PWM step-down DC-DC converter

2.6 5.5 0.75 5.5 1.2 1 1000

Adjustable frequency, current limit, fixed frequency/PWM, internal power FETs, synchronous rectifier

10-TDFN-EP

MAX8640Z

500mA, 4MHz synchronous-rectified step-down DC-DC converter in SC70

2.7 5.5 1.1 1.8 0.5 1 4000

Adjustable frequency, current limit, fixed frequency/PWM, internal power FETs, synchronous rectifier

6-μDFN, 6-SC70

MAX8649

1.8A step-down regulator with differential remote sense in 2mm x 2mm WLP

2.5 5.5 0.75 1.38 1.8 1 3250

Current limit, external sync, fixed frequency/PWM, internal power FETs, synchronous rectifier

16-WLP

MAX8836Z

1.2A PWM step-down converter in 2mm x 2mm WLP/UCSP for PA Power

2.7 5.5 3.1 3.4 1.2 1 500

Current limit, fixed frequency/PWM, internal power FETs, synchronous rectifier

16-UCSP™, 16-WLP

MAX8896

Dual PWM step-down converter in a 2mm x 2mm package for WCDMA PA and RF power

2.7 5.5 0.5 5 0.7 2 2000

Current limit, fixed frequency/PWM, internal Pwr. FETs ,synchronous rectifier

16-UCSP

MAX8952

2.5A step-down regulator with differential remote sense in 2mm x 2mm WLP

2.5 5.5 0.77 1.4 2.5 1 3250

Current limit, external sync, fixed frequency/PWM, internal power FETs, output OVP, synchronous rectifier

16-WLP


VIN (V, max)

VOUT(V)

IOUT(A, max)

ICC(mA, max)

Oper. Freq. (kHz)

Topology Package

ICL7660 20mA charge-pump voltage converter 1.5 10 +2VIN,

-VIN0.02 0.175 10 Doubler, inverter,

unregulated

8-μMAX/CDIP(N)/PDIP(N)/SOIC(N)/

TO99

MAX881RLow-noise bias supply in μMAX with POK for GaAsFET PA

2.5 5.5 -VIN - 0.6 0.01 0.95 100 Inverter, regulated 10-μMAX

MAX1759100mA buck/boost regulating charge pump in μMAX

1.6 5.52.5 to 5.5

adj. or3.3 fixed

0.1 0.18 1500 Regulated 10-μMAX

Charge Pumps


22

Converters for WLED PowerPart Topology LEDs

(max)Dimming Control

ILED (mA, max)

VIN (V, min)

VIN (V,

max)

Oper. Freq. (kHz)

Features Package

MAX1554 Inductor based 10 Analog, PWM 20 2.7 5.5 —

Internal power switch(es), open-LED protection, shutdown, soft-start

8-TDFN-EP

MAX1579 Inductor based 8 Analog, PWM 25 2.7 5.5 1000

Internal power switch(es), LED temperature derating, open LED protection, shutdown, soft-start

24-TQFN

MAX1582 Inductor based 7 Analog, PWM 20 2.6 5.5 1000


12-TQFN

MAX1698 Inductor based 50 Analog 350 2.7 5.5 — Open-LED protection, shutdown, soft-start 10-μMAX

MAX8596X Inductor based 9 Analog, PWM 25 2.6 6 1000

Internal power switch(es), LED temperature derating, open-LED protection, shutdown, soft-start

8-TDFN-EP

MAX8630_ Charge pump 5PWM, serial pulse

25 2.7 5.5 1000Internal power switch(es), LED temperature derating, open-LED protection, shutdown, soft-start

14-TDFN-EP

MAX8647 Charge pump 6 I2C serial 24 2.7 5.5 1000Internal power switch(es), LED temperature derating, open-LED protection, shutdown, soft-start

16-TQFN

MAX8678 Charge pump 4 Serial pulse 24 2.7 5.5 1000


16-TQFN

MAX8821 Charge Pump 6 Digital, I2C serial 25 2.7 5.5 1000

Internal power switch(es), LED temperature derating, open LED protection, shutdown

28-TQFN

MAX8822 Charge pump 4 Digital 24 2.7 5.5 1000Internal power switch(es), open-LED protection, shutdown, soft-start

16-TQFN

MAX8830 Inductor based 5 I2C serial 200 2.7 5.5 1000Camera flash, internal power switch(es), open LED protection, shutdown, soft-start

16-WLP

MAX8831 Inductor based 45 Digital, I2C serial 25 2.7 5.5 2000


16-WLP

MAX8901_ Inductor based 6PWM, serial pulse

25 2.6 5.5 750Internal power switch(es), open-LED protection, shutdown, soft-start

8-TDFN-EP

MAX8930 Charge pump, linear current regulator 12 I2C serial 25 2.7 5.5 4000 Internal power switch(es),

shutdown, soft-start 49-WLP


23

Converters for WLED FlashPart Topology LEDs

(max)Dimming Control

ILED (mA, max)

VIN (V, min)

VIN (V,

max)

Oper. Freq. (kHz)

Features Package

MAX1577_ Charge pump 40 Digital 1200 2.7 5.5 1000Camera flash, internal power switch(es), open-LED protection, shutdown, soft-start

8-TDFN-EP

MAX1583 Inductor based 5 Analog, digital 300 2.6 5.5 1000

Camera flash, internal power switch(es), open-LED protection, shutdown, soft-start

10-TDFN-EP

MAX1707 Charge pump 11 Digital, I2C serial 100 2.7 5.5 1000

Camera flash, internal power switch(es), LED temperature derating, open LED protection, shutdown, soft-start

24-TQFN

MAX8607 Inductor based, linear current regulator 1 Digital 1500 2.7 5.5 1000

Camera flash, internal power switch(es), LED temperature derating, open-LED protection, shutdown, soft-start

14-TDFN-EP

MAX8645_ Charge pump 8

Analog, digital, PWM,

serial pulse

200 2.7 5.5 1000Camera flash, internal power switch(es), LED temperature derating, shutdown, soft-start

28-TQFN

MAX8834_ Inductor based 3 Digital, I2C serial 1500 2.5 5.5 4000

Two flash/movie LED current regulators, GSM blanking, MAXFLASH protection to prevent system lockups

20-WLP


VIN(V, max)

VOUT(V)

VDROPOUTat Rated

ILOAD(V, typ)

RatedILOAD

ICC(µA, max)

OutputVoltage

Noise(µVRMS, typ)

Package

MAX1589ALow-input-voltage, 500mA LDO regulator with reset in SOT and TDFN

1.62 3.6 0.75, 1, 1.3, 1.5, 1.8, 2.5, 3 0.175 500 140 86 66-TDFN-EP/

TSOT

MAX1818

500mA, low-dropout linear regulator with output current limiting and thermal protection in SOT23

2.5 5.5 1.5, 1.8, 2, 2.5, 3.3, 5, or adj 5.5 500 250 115 6-SOT23

MAX8510Ultra low-noise, high-PSRR, low-dropout, 120mA linear regulator in SC70

2 6 1.6, 1.8, 2.5, 2.7, 2.8, 2.85, 3, 3.3, 4.5 0.12 120 90 11

5-SC70,8-TDFN-EP

MAX8840Ultra-low-noise, high-PSRR, low-dropout, 150mA linear regulator in μDFN

2 61.5, 1.6, 1.8, 1.9, 2.5, 2.6, 2.7, 2.8, 2.85, 2.9, 3, 3.1, 3.3, 4.5

0.17 150 90 11 6-μDFN/ UTLGA

MAX8868Low-noise, low-dropout, 150mA linear regulator in SOT23 with auto-discharge

2.5 5.5 2.5, 2.8, 2.84, 3, 3.15, 3.3, 3.6, 5 0.16 150 180 20 5-SOT/

TSOT

MAX8902_ Low-noise 500mA LDO regulator in 2mm x 2mm TDFN 1.7 5.5 1.5, 1.8, 2, 2.5, 3, 3.1,

3.3, or adj 0.05 500 120 16 8-TDFN-EP

LDOs for Baseband and RF Chipsets

Contact Maxim Direct at 1.800.629.4642 or for more information, visit www.maximintegrated.com.

© 2012 Maxim Integrated. All rights reserved. The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. in the United States and other jurisdictions throughout the world. All other company names may be trade names or trademarks of their respective owners.

Rev. 0; November 2012


The Bluetooth word mark is a registered trademark owned by Bluetooth SIG, Inc. and any use of such marks by Maxim is under license. HDMI is a registered trademark of HDMI Licensing LLC. ModelGauge, Smart Power Selector, True Shutdown, and UCSP are trademarks and 1-Wire, DirectDrive, TINI, and μMAX are registered trademarks of Maxim Integrated Products, Inc. SD is a trademark of the SD Card Association.

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