Circuito Integrado LP2951CN V REG LDO ADJ +1.24 - 29V DIP8 - Manual Sonigate
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F E A T U R E S
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1IN+
1IN
FEEDBACK
DTC
CT
RT
GND
C1
2IN+
2IN
REF
OUTPUT CTRL
VCC
C2
E2
E1
D, DB, N, NS, OR PW PACKAGE
(TOP VIEW)
D E S C R I P T I O N
T L 4 9 4
P U L S E - W I D T H - M O D U L A T I O N C O N T R O L C I R C U I T S S L V S 0 7 4 E J A N U A R Y 1 9 8 3 R E V I S E D F E B R U A R Y 2 0 0 5
C o m p l e t e P W M P o w e r - C o n t r o l C i r c u i t r y
U n c o m m i t t e d O u t p u t s f o r 2 0 0 - m A S i n k o r S o u r c e C u r r e n t
O u t p u t C o n t r o l S e l e c t s S i n g l e - E n d e d o r
P u s h - P u l l O p e r a t i o n I n t e r n a l C i r c u i t r y P r o h i b i t s D o u b l e P u l s e a t
E i t h e r O u t p u t
V a r i a b l e D e a d T i m e P r o v i d e s C o n t r o l O v e r
T o t a l R a n g e
I n t e r n a l R e g u l a t o r P r o v i d e s a S t a b l e 5 - V R e f e r e n c e S u p p l y W i t h 5 % T o l e r a n c e
C i r c u i t A r c h i t e c t u r e A l l o w s E a s y S y n c h r o n i z a t i o n
T h e T L 4 9 4 i n c o r p o r a t e s a l l t h e f u n c t i o n s r e q u i r e d i n t h e c o n s t r u c t i o n o f a p u l s e - w i d t h - m o d u l a t i o n ( P W M ) c o n t r o l
c i r c u i t o n a s i n g l e c h i p . D e s i g n e d p r i m a r i l y f o r p o w e r - s u p p l y c o n t r o l , t h i s d e v i c e o f f e r s t h e f l e x i b i l i t y t o t a i l o r t h e p o w e r - s u p p l y c o n t r o l c i r c u i t r y t o a s p e c i f i c a p p l i c a t i o n .
T h e T L 4 9 4 c o n t a i n s t w o e r r o r a m p l i f i e r s , a n o n - c h i p a d j u s t a b l e o s c i l l a t o r , a d e a d - t i m e c o n t r o l ( D T C ) c o m p a r a t o r , a p u l s e - s t e e r i n g c o n t r o l f l i p - f l o p , a 5 - V , 5 % - p r e c i s i o n r e g u l a t o r , a n d o u t p u t - c o n t r o l c i r c u i t s .
T h e e r r o r a m p l i f i e r s e x h i b i t a c o m m o n - m o d e v o l t a g e r a n g e f r o m 0 . 3 V t o V C C 2 V . T h e d e a d - t i m e c o n t r o l c o m p a r a t o r h a s a f i x e d o f f s e t t h a t p r o v i d e s a p p r o x i m a t e l y 5 % d e a d t i m e . T h e o n - c h i p o s c i l l a t o r c a n b e b y p a s s e d b y t e r m i n a t i n g R T t o t h e r e f e r e n c e o u t p u t a n d p r o v i d i n g a s a w t o o t h i n p u t t o C T , o r i t c a n d r i v e t h e c o m m o n c i r c u i t s i n s y n c h r o n o u s m u l t i p l e - r a i l p o w e r s u p p l i e s .
T h e u n c o m m i t t e d o u t p u t t r a n s i s t o r s p r o v i d e e i t h e r c o m m o n - e m i t t e r o r e m i t t e r - f o l l o w e r o u t p u t c a p a b i l i t y . T h e T L 4 9 4 p r o v i d e s f o r p u s h - p u l l o r s i n g l e - e n d e d o u t p u t o p e r a t i o n , w h i c h c a n b e s e l e c t e d t h r o u g h t h e o u t p u t - c o n t r o l f u n c t i o n . T h e a r c h i t e c t u r e o f t h i s d e v i c e p r o h i b i t s t h e p o s s i b i l i t y o f e i t h e r o u t p u t b e i n g p u l s e d t w i c e d u r i n g p u s h - p u l l o p e r a t i o n .
T h e T L 4 9 4 C i s c h a r a c t e r i z e d f o r o p e r a t i o n f r o m 0 C t o 7 0 C . T h e T L 4 9 4 I i s c h a r a c t e r i z e d f o r o p e r a t i o n f r o m 4 0 C t o 8 5 C .
A V A I L A B L E O P T I O N S
P A C K A G E D D E V I C E S ( 1 )
S H R I N K S M A L L T H I N S H R I N K TA S M A L L O U T L I N E P L A S T I C D I P S M A L L O U T L I N E O U T L I N E S M A L L O U T L I N E
( D ) ( N ) ( N S ) ( D B ) ( P W )
0 C t o 7 0 C T L 4 9 4 C D T L 4 9 4 C N T L 4 9 4 C N S T L 4 9 4 C D B T L 4 9 4 C P W
4 0 C t o 8 5 C T L 4 9 4 I D T L 4 9 4 I N
( 1 ) T h e D , D B , N S , a n d P W p a c k a g e s a r e a v a i l a b l e t a p e d a n d r e e l e d . A d d t h e s u f f i x R t o d e v i c e t y p e ( e . g . , T L 4 9 4 C D R ) .
P l e a s e b e a w a r e t h a t a n i m p o r t a n t n o t i c e c o n c e r n i n g a v a i l a b i l i t y , s t a n d a r d w a r r a n t y , a n d u s e i n c r i t i c a l a p p l i c a t i o n s o f T e x a s I n s t r u m e n t s s e m i c o n d u c t o r p r o d u c t s a n d d i s c l a i m e r s t h e r e t o a p p e a r s a t t h e e n d o f t h i s d a t a s h e e t .
P R O D U C T I O N D A T A i n f o r m a t i o n i s c u r r e n t a s o f p u b l i c a t i o n d a t e . C o p y r i g h t 1 9 8 3 2 0 0 5 , T e x a s I n s t r u m e n t s I n c o r p o r a t e d P r o d u c t s c o n f o r m t o s p e c i f i c a t i o n s p e r t h e t e r m s o f t h e T e x a s I n s t r u m e n t s s t a n d a r d w a r r a n t y . P r o d u c t i o n p r o c e s s i n g d o e s n o t
n e c e s s a r i l y i n c l u d e t e s t i n g o f a l l p a r a m e t e r s .
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GND
VCC
Reference
Regulator
C1
Pulse-Steering
Flip-Flop
C1
1D
DTC
CT
RT
PWMComparator
+
Error Amplifier 1
0.1 V
Dead-Time Control
Comparator
Oscillator
OUTPUT CTRL
(see Function Table)
0.7 mA
E1
C2
E2
+
Error Amplifier 2
1IN+
1IN
2IN+
2IN
FEEDBACK
REF
6
5
4
1
2
16
15
3
13
8
9
11
10
12
14
7
Q1
Q20.7 V
T L 4 9 4
P U L S E - W I D T H - M O D U L A T I O N C O N T R O L C I R C U I T S S L V S 0 7 4 E J A N U A R Y 1 9 8 3 R E V I S E D F E B R U A R Y 2 0 0 5
F U N C T I O N T A B L E
I N P U T T O O U T P U T F U N C T I O N
O U T P U T C T R L
VI = G N D S i n g l e - e n d e d o r p a r a l l e l o u t p u t
VI = Vr e f N o r m a l p u s h - p u l l o p e r a t i o n
F U N C T I O N A L B L O C K D I A G R A M
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A b s o l u t e M a x i m u m R a t i n g s ( 1 )
R e c o m m e n d e d O p e r a t i n g C o n d i t i o n s
T L 4 9 4
P U L S E - W I D T H - M O D U L A T I O N C O N T R O L C I R C U I T S S L V S 0 7 4 E J A N U A R Y 1 9 8 3 R E V I S E D F E B R U A R Y 2 0 0 5
o v e r o p e r a t i n g f r e e - a i r t e m p e r a t u r e r a n g e ( u n l e s s o t h e r w i s e n o t e d )
M I N M A X U N I T
VC C S u p p l y v o l t a g e ( 2 ) 4 1 V
VI A m p l i f i e r i n p u t v o l t a g e V C C + 0 . 3 V
VO C o l l e c t o r o u t p u t v o l t a g e 4 1 V I O C o l l e c t o r o u t p u t c u r r e n t 2 5 0 m A
D p a c k a g e 7 3
D B p a c k a g e 8 2
J A P a c k a g e t h e r m a l i m p e d a n c e ( 3 ) ( 4 ) N p a c k a g e 6 7 C / W
N S p a c k a g e 6 4
P W p a c k a g e 1 0 8
L e a d t e m p e r a t u r e 1 , 6 m m ( 1 / 1 6 i n c h ) f r o m c a s e f o r 1 0 s e c o n d s 2 6 0 C
Ts t g S t o r a g e t e m p e r a t u r e r a n g e 6 5 1 5 0 C
( 1 ) S t r e s s e s b e y o n d t h o s e l i s t e d u n d e r " a b s o l u t e m a x i m u m r a t i n g s " m a y c a u s e p e r m a n e n t d a m a g e t o t h e d e v i c e . T h e s e a r e s t r e s s r a t i n g s o n l y , a n d f u n c t i o n a l o p e r a t i o n o f t h e d e v i c e a t t h e s e o r a n y o t h e r c o n d i t i o n s b e y o n d t h o s e i n d i c a t e d u n d e r " r e c o m m e n d e d o p e r a t i n g c o n d i t i o n s " i s n o t i m p l i e d . E x p o s u r e t o a b s o l u t e - m a x i m u m - r a t e d c o n d i t i o n s f o r e x t e n d e d p e r i o d s m a y a f f e c t d e v i c e r e l i a b i l i t y .
( 2 ) A l l v o l t a g e s a r e w i t h r e s p e c t t o t h e n e t w o r k g r o u n d t e r m i n a l . ( 3 ) M a x i m u m p o w e r d i s i p a t i o n i s a f u n c t i o n o f T J( m a x ) , J A, a n d T A. T h e m a x i m u m a l l o w a b l e p o w e r d i s s i p a t i o n a t a n y a l l o w a b l e a m b i e n t
t e m p e r a t i r e i s P D = ( TJ( m a x ) T A) /J A. O p e r a t i n g a t t h e a b s o l u t e m a x i m u m T J o f 1 5 0 C c a n a f f e c t r e l i a b i l i t y . ( 4 ) T h e p a c k a g e t h e r m a l i m p e d a n c e i s c a l c u l a t e d i n a c c o r d a n c e w i t h J E S D 5 1 - 7 .
M I N M A X U N I T
VC C S u p p l y v o l t a g e 7 4 0 V
VI A m p l i f i e r i n p u t v o l t a g e 0 . 3 V C C 2 V
VO C o l l e c t o r o u t p u t v o l t a g e 4 0 V
C o l l e c t o r o u t p u t c u r r e n t ( e a c h t r a n s i s t o r ) 2 0 0 m A
C u r r e n t i n t o f e e d b a c k t e r m i n a l 0 . 3 m A
fO S C O s c i l l a t o r f r e q u e n c y 1 3 0 0 k H z
CT T i m i n g c a p a c i t o r 0 . 4 7 1 0 0 0 0 n F RT T i m i n g r e s i s t o r 1 . 8 5 0 0 k
T L 4 9 4 C 0 7 0 TA O p e r a t i n g f r e e - a i r t e m p e r a t u r e C
T L 4 9 4 I 4 0 8 5
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s +
N
n+1
(xn* X)2
N* 1
E l e c t r i c a l C h a r a c t e r i s t i c s
R e f e r e n c e S e c t i o n
O s c i l l a t o r S e c t i o n
E r r o r - A m p l i f i e r S e c t i o n
T L 4 9 4
P U L S E - W I D T H - M O D U L A T I O N C O N T R O L C I R C U I T S S L V S 0 7 4 E J A N U A R Y 1 9 8 3 R E V I S E D F E B R U A R Y 2 0 0 5
o v e r r e c o m m e n d e d o p e r a t i n g f r e e - a i r t e m p e r a t u r e r a n g e , V C C = 1 5 V , f = 1 0 k H z ( u n l e s s o t h e r w i s e n o t e d )
T L 4 9 4 C , T L 4 9 4 I P A R A M E T E R T E S T C O N D I T I O N S ( 1 ) U N I T
M I N T Y P ( 2 )
M A XO u t p u t v o l t a g e ( R E F ) I O = 1 m A 4 . 7 5 5 5 . 2 5 V
I n p u t r e g u l a t i o n V C C = 7 V t o 4 0 V 2 2 5 m V
O u t p u t r e g u l a t i o n I O = 1 m A t o 1 0 m A 1 1 5 m V
O u t p u t v o l t a g e c h a n g e w i t h t e m p e r a t u r e TA = M I N t o M A X 2 1 0 m V / V
S h o r t - c i r c u i t o u t p u t c u r r e n t ( 3 ) R E F = 0 V 2 5 m A
( 1 ) F o r c o n d i t i o n s s h o w n a s M I N o r M A X , u s e t h e a p p r o p r i a t e v a l u e s p e c i f i e d u n d e r r e c o m m e n d e d o p e r a t i n g c o n d i t i o n s . ( 2 ) A l l t y p i c a l v a l u e s , e x c e p t f o r p a r a m e t e r c h a n g e s w i t h t e m p e r a t u r e , a r e a t T A = 2 5 C .( 3 ) D u r a t i o n o f s h o r t c i r c u i t s h o u l d n o t e x c e e d o n e s e c o n d .
CT = 0 . 0 1 F , RT = 1 2 k ( s e e F i g u r e 1 )
T L 4 9 4 C , T L 4 9 4 I P A R A M E T E R T E S T C O N D I T I O N S ( 1 ) U N I T M I N T Y P ( 2 ) M A X
F r e q u e n c y 1 0 k H z
S t a n d a r d d e v i a t i o n o f f r e q u e n c y ( 3 ) A l l v a l u e s o f V C C, CT, RT, a n d T A c o n s t a n t 1 0 0 H z / k H z
F r e q u e n c y c h a n g e w i t h v o l t a g e V C C = 7 V t o 4 0 V , T A = 2 5 C 1 H z / k H z
F r e q u e n c y c h a n g e w i t h t e m p e r a t u r e ( 4 ) TA = M I N t o M A X 1 0 H z / k H z
( 1 ) F o r c o n d i t i o n s s h o w n a s M I N o r M A X , u s e t h e a p p r o p r i a t e v a l u e s p e c i f i e d u n d e r r e c o m m e n d e d o p e r a t i n g c o n d i t i o n s . ( 2 ) A l l t y p i c a l v a l u e s , e x c e p t f o r p a r a m e t e r c h a n g e s w i t h t e m p e r a t u r e , a r e a t T A = 2 5 C .( 3 ) S t a n d a r d d e v i a t i o n i s a m e a s u r e o f t h e s t a t i s t i c a l d i s t r i b u t i o n a b o u t t h e m e a n a s d e r i v e d f r o m t h e f o r m u l a :
( 4 ) T e m p e r a t u r e c o e f f i c i e n t o f t i m i n g c a p a c i t o r a n d t i m i n g r e s i s t o r a r e n o t t a k e n i n t o a c c o u n t .
S e e F i g u r e 2
T L 4 9 4 C , T L 4 9 4 I P A R A M E T E R T E S T C O N D I T I O N S U N I T
M I N T Y P ( 1 ) M A X
I n p u t o f f s e t v o l t a g e V O ( F E E D B A C K ) = 2 . 5 V 2 1 0 m V
I n p u t o f f s e t c u r r e n t V O ( F E E D B A C K ) = 2 . 5 V 2 5 2 5 0 n A
I n p u t b i a s c u r r e n t V O ( F E E D B A C K ) = 2 . 5 V 0 . 2 1 A
0 . 3 t oC o m m o n - m o d e i n p u t v o l t a g e r a n g e V C C = 7 V t o 4 0 V V VC C 2
O p e n - l o o p v o l t a g e a m p l i f i c a t i o n VO = 3 V , V O = 0 . 5 V t o 3 . 5 V , R L = 2 k 7 0 9 5 d B
U n i t y - g a i n b a n d w i d t h V O = 0 . 5 V t o 3 . 5 V , R L = 2 k 8 0 0 k H z C o m m o n - m o d e r e j e c t i o n r a t i o VO = 4 0 V , T A = 2 5 C 6 5 8 0 d B
O u t p u t s i n k c u r r e n t ( F E E D B A C K ) V I D = 1 5 m V t o 5 V , V ( F E E D B A C K ) = 0 . 7 V 0 . 3 0 . 7 m A
O u t p u t s o u r c e c u r r e n t ( F E E D B A C K ) V I D = 1 5 m V t o 5 V , V ( F E E D B A C K ) = 3 . 5 V 2 m A
( 1 ) A l l t y p i c a l v a l u e s , e x c e p t f o r p a r a m e t e r c h a n g e s w i t h t e m p e r a t u r e , a r e a t T A = 2 5 C .
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E l e c t r i c a l C h a r a c t e r i s t i c s
O u t p u t S e c t i o n
D e a d - T i m e C o n t r o l S e c t i o n
P W M C o m p a r a t o r S e c t i o n
T o t a l D e v i c e
S w i t c h i n g C h a r a c t e r i s t i c s
T L 4 9 4
P U L S E - W I D T H - M O D U L A T I O N C O N T R O L C I R C U I T S S L V S 0 7 4 E J A N U A R Y 1 9 8 3 R E V I S E D F E B R U A R Y 2 0 0 5
o v e r r e c o m m e n d e d o p e r a t i n g f r e e - a i r t e m p e r a t u r e r a n g e , V C C = 1 5 V , f = 1 0 k H z ( u n l e s s o t h e r w i s e n o t e d )
P A R A M E T E R T E S T C O N D I T I O N S M I N T Y P ( 1 )
M A X U N I T C o l l e c t o r o f f - s t a t e c u r r e n t V C E = 4 0 V , V C C = 4 0 V 2 1 0 0 A
E m i t t e r o f f - s t a t e c u r r e n t V C C = VC = 4 0 V , V E = 0 1 0 0 A
C o m m o n e m i t t e r V E = 0 , I C = 2 0 0 m A 1 . 1 1 . 3 C o l l e c t o r - e m i t t e r s a t u r a t i o n v o l t a g e V
E m i t t e r f o l l o w e r V O ( C 1 o r C 2 ) = 1 5 V , I E = 2 0 0 m A 1 . 5 2 . 5
O u t p u t c o n t r o l i n p u t c u r r e n t V I = Vr e f 3 . 5 m A
( 1 ) A l l t y p i c a l v a l u e s , e x c e p t f o r t e m p e r a t u r e c o e f f i c i e n t , a r e a t T A = 2 5 C .
S e e F i g u r e 1
P A R A M E T E R T E S T C O N D I T I O N S M I N T Y P ( 1 ) M A X U N I T
I n p u t b i a s c u r r e n t ( D E A D - T I M E C T R L ) V I = 0 t o 5 . 2 5 V 2 1 0 A
VI ( D E A D - T I M E C T R L ) = 0 , C T = 0 . 0 1 F ,M a x i m u m d u t y c y c l e , e a c h o u t p u t 4 5 % RT = 1 2 k
Z e r o d u t y c y c l e 3 3 . 3 I n p u t t h r e s h o l d v o l t a g e ( D E A D - T I M E C T R L ) V
M a x i m u m d u t y c y c l e 0
( 1 ) A l l t y p i c a l v a l u e s , e x c e p t f o r t e m p e r a t u r e c o e f f i c i e n t , a r e a t T A = 2 5 C .
S e e F i g u r e 1
P A R A M E T E R T E S T C O N D I T I O N S M I N T Y P ( 1 ) M A X U N I T
I n p u t t h r e s h o l d v o l t a g e ( F E E D B A C K ) Z e r o d u t y c y l e 4 4 . 5 V
I n p u t s i n k c u r r e n t ( F E E D B A C K ) V ( F E E D B A C K ) = 0 . 7 V 0 . 3 0 . 7 m A
( 1 ) A l l t y p i c a l v a l u e s , e x c e p t f o r t e m p e r a t u r e c o e f f i c i e n t , a r e a t T A = 2 5 C .
P A R A M E T E R T E S T C O N D I T I O N S M I N T Y P ( 1 ) M A X U N I T
VC C = 1 5 V 6 1 0 RT = Vr e f,S t a n d b y s u p p l y c u r r e n t m A A l l o t h e r i n p u t s a n d o u t p u t s o p e n VC C = 4 0 V 9 1 5
A v e r a g e s u p p l y c u r r e n t V I ( D E A D - T I M E C T R L ) = 2 V , S e e F i g u r e 1 7 . 5 m A
( 1 ) A l l t y p i c a l v a l u e s , e x c e p t f o r t e m p e r a t u r e c o e f f i c i e n t , a r e a t T A = 2 5 C .
TA = 2 5 C
P A R A M E T E R T E S T C O N D I T I O N S M I N T Y P ( 1 ) M A X U N I T
R i s e t i m e 1 0 0 2 0 0 n s C o m m o n - e m i t t e r c o n f i g u r a t i o n , S e e F i g u r e 3
F a l l t i m e 2 5 1 0 0 n s
R i s e t i m e 1 0 0 2 0 0 n s E m i t t e r - f o l l o w e r c o n f i g u r a t i o n , S e e F i g u r e 4
F a l l t i m e 4 0 1 0 0 n s
( 1 ) A l l t y p i c a l v a l u e s , e x c e p t f o r t e m p e r a t u r e c o e f f i c i e n t , a r e a t T A = 2 5 C .
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P A R A M E T E R M E A S U R E M E N T I N F O R M A T I O N
Test
Inputs
DTC
FEEDBACK
RT
CT
GND50 k
12 k
0.01 F
VCC
REFOUTPUT
CTRL
E2
C2
E1
C1 Output 1
Output 2
150
2 W
150
2 W
VCC = 15 V
TEST CIRCUIT
1IN+
VCC
VCC
0 V
0 V
Voltage
at C1
Voltageat C2
Voltage
at CT
DTC
FEEDBACK
0 V
0.7 V
0%MAX 0%
Threshold Voltage
Threshold Voltage
VOLTAGE WAVEFORMS
Duty Cycle
Error
Amplifiers
7
14
12
8
9
11
10
4
3
6
5
1
2
16
15
13
1IN
2IN
2IN+
T L 4 9 4
P U L S E - W I D T H - M O D U L A T I O N C O N T R O L C I R C U I T S S L V S 0 7 4 E J A N U A R Y 1 9 8 3 R E V I S E D F E B R U A R Y 2 0 0 5
F i g u r e 1 . O p e r a t i o n a l T e s t C i r c u i t a n d W a v e f o r m s
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P A R A M E T E R M E A S U R E M E N T I N F O R M A T I O N
+
+
VI
Vref
FEEDBACK
Amplifier Under Test
Other Amplifier
Output
Each Output
Circuit
68
2 W
15 V
CL = 15 pF
(See Note A)
90%
10%
90%
10%
tf tr
TEST CIRCUIT OUTPUT VOLTAGE WAVEFORM
NOTE A: CL includes probe and jig capacitance.
Output
Each Output
Circuit
68
2 W
15 V
CL = 15 pF
(See Note A)
90%
10%
90%
10%
tftr
TEST CIRCUIT OUTPUT VOLTAGE WAVEFORM
NOTE A: CL includes probe and jig capacitance.
T L 4 9 4
P U L S E - W I D T H - M O D U L A T I O N C O N T R O L C I R C U I T S S L V S 0 7 4 E J A N U A R Y 1 9 8 3 R E V I S E D F E B R U A R Y 2 0 0 5
F i g u r e 2 . A m p l i f i e r C h a r a c t e r i s t i c s
F i g u r e 3 . C o m m o n - E m i t t e r C o n f i g u r a t i o n
F i g u r e 4 . E m i t t e r - F o l l o w e r C o n f i g u r a t i o n
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T Y P I C A L C H A R A C T E R I S T I C S
Df = 1%
40
10
100
1 k 4 k 10 k 40 k 100 k 400 k 1 MfOscilla
torFrequencyandFrequencyVariation
Hz
OSCILLATOR FREQUENCY AND
FREQUENCY VARIATION
vsTIMING RESISTANCE
400
1 k
4 k
10 k
40 k
100 k
RT Timing Resistance
0.1 F
2%
1%
0% 0.01F
0.001 F
VCC = 15 VTA = 25C
CT = 1 F
Frequency variation (f) is the change in oscillator frequency that occurs over the full temperature range.
10
0
100
20
1 10 100 1 M
A
AmplifierVoltageAmplificationdB
30
f Frequency Hz
AMPLIFIER VOLTAGE AMPLIFICATION
vs
FREQUENCY
1 k
VCC = 15 V
VO = 3 V
TA = 25C
10 k
40
50
60
70
80
90
100 k
T L 4 9 4
P U L S E - W I D T H - M O D U L A T I O N C O N T R O L C I R C U I T S S L V S 0 7 4 E J A N U A R Y 1 9 8 3 R E V I S E D F E B R U A R Y 2 0 0 5
F i g u r e 5 .
F i g u r e 6 .
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PACKAGE OPTION ADDENDUM
www.ti.com 11-Apr-2013
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status
(1)
Package Type PackageDrawing
Pins PackageQty
Eco Plan
(2)
Lead/Ball Finish MSL Peak Temp
(3)
Op Temp (C) Top-Side Markings
(4)
Sampl
TL494CD ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 TL494C
TL494CDE4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 TL494C
TL494CDG4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 TL494C
TL494CDR ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 TL494C
TL494CDRE4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 TL494C
TL494CDRG3 PREVIEW SOIC D 16 TBD Call TI Call TI 0 to 70 TL494C
TL494CDRG4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 TL494C
TL494CJ OBSOLETE CDIP J 16 TBD Call TI Call TI
TL494CN ACTIVE PDIP N 16 25 Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type 0 to 70 TL494CN
TL494CNE4 ACTIVE PDIP N 16 25 Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type 0 to 70 TL494CN
TL494CNSR ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 TL494
TL494CNSRG4 ACTIVE SO NS 16 2000 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 TL494
TL494CPW ACTIVE TSSOP PW 16 90 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 T494
TL494CPWE4 ACTIVE TSSOP PW 16 90 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 T494
TL494CPWG4 ACTIVE TSSOP PW 16 90 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 T494
TL494CPWLE OBSOLETE TSSOP PW 16 TBD Call TI Call TI
TL494CPWR ACTIVE TSSOP PW 16 2000 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 T494
TL494CPWRE4 ACTIVE TSSOP PW 16 2000 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 T494
http://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuy -
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PACKAGE OPTION ADDENDUM
www.ti.com 11-Apr-2013
Addendum-Page 2
Orderable Device Status
(1)
Package Type PackageDrawing
Pins PackageQty
Eco Plan
(2)
Lead/Ball Finish MSL Peak Temp
(3)
Op Temp (C) Top-Side Markings
(4)
Sampl
TL494CPWRG4 ACTIVE TSSOP PW 16 2000 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM 0 to 70 T494
TL494ID ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM -40 to 85 TL494I
TL494IDE4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM -40 to 85 TL494I
TL494IDG4 ACTIVE SOIC D 16 40 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM -40 to 85 TL494I
TL494IDR ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM -40 to 85 TL494I
TL494IDRE4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM -40 to 85 TL494I
TL494IDRG4 ACTIVE SOIC D 16 2500 Green (RoHS
& no Sb/Br)
CU NIPDAU Level-1-260C-UNLIM -40 to 85 TL494I
TL494IN ACTIVE PDIP N 16 25 Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type -40 to 85 TL494IN
TL494INE4 ACTIVE PDIP N 16 25 Pb-Free
(RoHS)
CU NIPDAU N / A for Pkg Type -40 to 85 TL494IN
TL494MJ OBSOLETE CDIP J 16 TBD Call TI Call TI -55 to 125
TL494MJB OBSOLETE CDIP J 16 TBD Call TI Call TI -55 to 125(1)
The marketing status values are defined as follows:ACTIVE: Product device recommended for new designs.LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontentfor the latest availabilityinformation and additional product content details.TBD: The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement thatlead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used betweenthe die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weightin homogeneous material)
http://www.ti.com/productcontenthttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuyhttp://www.ti.com/product/TL494?CMP=conv-poasamples#samplebuy -
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PACKAGE OPTION ADDENDUM
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Addendum-Page 3
(3)MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is acontinuation of the previous line and the two combined represent the entire Top-Side Marking for that device.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on informationprovided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken andcontinues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
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TAPE AND REEL INFORMATION
*All dimensions are nominal
Device PackageType
PackageDrawing
Pins SPQ ReelDiameter
(mm)
ReelWidth
W1 (mm)
A0(mm)
B0(mm)
K0(mm)
P1(mm)
W(mm)
Pin1Quadrant
TL494CDR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
TL494CDR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
TL494CDRG4 SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
TL494CPWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1
TL494IDR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
TL494IDRG4 SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 8-Apr-2013
Pack Materials-Page 1
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*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
TL494CDR SOIC D 16 2500 333.2 345.9 28.6
TL494CDR SOIC D 16 2500 367.0 367.0 38.0
TL494CDRG4 SOIC D 16 2500 333.2 345.9 28.6
TL494CPWR TSSOP PW 16 2000 367.0 367.0 35.0
TL494IDR SOIC D 16 2500 333.2 345.9 28.6
TL494IDRG4 SOIC D 16 2500 333.2 345.9 28.6
PACKAGE MATERIALS INFORMATION
www.ti.com 8-Apr-2013
Pack Materials-Page 2
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