Nte 1750
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Transcript of Nte 1750
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NTE1750Integrated Circuit
Dual SwitchMode Solenoid Driver
Description:
This NTE1750 is a monolithic integrated circuit in a 15Lead Staggared SIP type package that incor-porates all the functions for direct interfacing between digital circuitry and inductive loads. This deviceis designed to accept standard micriprocessor logic levels at the inputs and can drive 2 solenoids.The output current is completely controlled by means of a switching technique allowing very efficient
operation. Furthermore, it includes an enable input and dual supplies (for interfacing with peripheralsrunning at a higher voltage than the logic).
Features:
D High Current Capability
D High Voltage Operation
D High Efficiency SwitchMode Operation
D Regulated Output Current
D Separate Logic Supply
D Thermal Protection
Applications:
D Hammer Driver for Matrix Printers
D Stepper Motor Driver
D Electromagnetic Controller
Absolute Maximum Ratings:
Supply Voltge, VS 50V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Logic Supply Voltage, VSS 12V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Enable and Input Voltage, VEN, Vi 7V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Voltage, Vref 7V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Peak Output Current (Each Channel), IO
NonRepetitive (t = 100s) 3.0A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Repetitive (80% ON; 20% OFF, Ton = 10ms) 2.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DC Operation 2.0A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total Power Dissipation (TC = +75C), Ptot 25W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Operating Junction Temperature Range, TJ 40 to +150C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Storage Temperature Range, Tstg 40 to +150C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Thermal Resistance, JunctiontoCase, TthJC 3C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Thermal Resistancde, JunctiontoAmbient, RthJA 35C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Electrical Characteristics: (VSS = 5V, VS = 26V, TJ = +25C, Note 1 unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Supply Voltage VS 12 46 V
Logic Supply Voltage VSS 4.75 10.0 V
Quiescent Drain Current (From VSS) Id VS = 46V, Vi1 = Vi2 = VEN = L 4 mA
Quiescent Drain Current (From VS) Iss VSS = 10V 46 mA
Input Voltage Vi1, V
i2Low 0.3 +0.8 V
High 2.2 7.0 V
Enable Input Voltage VEN Low 0.3 +0.8 V
High 2.2 7.0 V
Input Current Ii1, Ii2 Vi1 = Vi2 = L 100 A
Vi1 = Vi2 = H 10 A
Enable Input Current IEN VEN = L 100 A
VEN = H 10 A
Input Reference Voltage Vref1, Vref2 0.2 2.0 V
Input Reference Current Iref1, Iref2
5 AOscillation Frequency f OSC C = 3.0nF, R = 9.1k 25 kHz
Transconductance (Each Channel) Ip Vref= 1V 1.9 2.0 2.1 A/V
Vref
Total Output Voltage Drop (Each Channel) Vdrop IO = 2A, Note 2 2.8 3.6 V
External Sensing Resistors Voltage Drop Vsense1,Vsense2
2 V
Note 1. L = Low, H = HighNote 2. Vdrop = VCE(sat)Q1 + VCE(sat)Q2.
VSS
Enable
Logic/VS
Output Low Ch 1
Input Signal Ch 1
GND
OSC RC Network
Input Ref Vltg Ch 1
Output High Ch 1
Input Ref Vltg Ch 2
Output Low Ch 2
15
14
13
12
Output High Ch 2
Current Sensing Ch 2
11 Input Signal Ch 2
10
9
8
7
6
5
Current Sensing Ch 14
3
2
1
Pin Connection Diagram(Front View)
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.699(17.7)
.860(21.8)
.150 (3.81) Dia Max
.791 (20.1)
.689(17.5)
.069 (1.75)
.196 (4.99)
.110(2.79)
.169(4.29)
.008 (.203).050 (1.27) .200
(5.08)
151