参数资料
型号: SC2544TSTRT
厂商: Semtech
文件页数: 2/22页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 24TSSOP
标准包装: 1
PWM 型: 电压模式
输出数: 2
频率 - 最大: 300kHz
占空比: 90%
电源电压: 4.5 V ~ 28 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 24-TSSOP(0.173",4.40mm 宽)
包装: 标准包装
产品目录页面: 1358 (CN2011-ZH PDF)
其它名称: SC2544TSDKR
SC2544
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction.
Operation outside of the parameters specified in the Electrical Characteristics section is not implied.
P a r a m e t e r
B S T 1 , B S T 2 t o P G N D
V I N t o P G N D
I L I M 1 , I L I M 2 a n d E N t o P G N D
V C C a n d P V C C t o P G N D
P G N D t o A G N D
B S T 1 t o P H 1 , B S T 2 t o P H 2 , D R V H 1 t o P H 1 , D R V H 2 t o P H 2
D R V L 1 , D R V L 2 t o P G N D
P H A S E , D R V L t o A G N D p u l s e ( 1 0 0 n S ) , p e a k v o l t a g e
A l l O t h e r P i n s t o A G N D
S y m b o l
V b s t
V i n
M a x i m u m
3 8
2 8
V I N
1 4
+ / - 0 . 3
- 0 . 3 t o 1 4
- 0 . 3 t o V C C
- 3
- 0 . 3 t o V C C
U n i t s
V
V
V
V
V
V
V
V
V
S t o r a g e T e m p e r a t u r e R a n g e
J u n c t i o n T e m p e r a t u r e
T S T G
T J
- 6 0 t o + 1 5 0
- 4 0 t o + 1 5 0
o
o
C
C
L e a d T e m p e r a t u r e ( S o l d e r i n g ) 1 0 S e c f o r T S S O P - 2 4
L e a d T e m p e r a t u r e ( I R R e f l o w ) f o r M L P Q - 2 4
T L E A D
2 6 0
o
C
T h e r m a l R e s i s t a n c e J u n c t i o n t o C a s e
T S S O P - 2 4
M L P - 2 4
T h e r m a l R e s i s t a n c e J u n c t i o n t o A m b i e n t
T S S O P - 2 4
M L P - 2 4
θ J C
θ J A
2 3
2
7 8
2 5
o
o
C / W
C / W
Unless specified: T A = 25 C, V IN =16V, Fs=200KHz .
Note: This device is ESD sensitive. Use of standard ESD handling precautions is required.
Electrical Characteristics
o
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
M a x
U n i t
U n d e r v o l t a g e L o c k o u t
S t a r t T h r e s h o l d
U V L O H y s t e r e s i s
V c c r i s i n g
V c c f a l l i n g
2 0 0
4 . 5
V
m V
P o w e r S u p p l y
O p e r a t i n g C u r r e n t ( I IN - I P V C C )
V c c R e g u l a t e d
V c c L o a d R e g u l a t i o n L e v e l
V c c L i n e R e g u l a t i o n
P V c c O p e r a t i n g C u r r e n t
D i s a b l e Q u i e s c e n t C u r r e n t
S S 1 / S S 2 / E N = H i g h , F S = 2 0 0 k H z
V I N > 1 2 V
I _ l o a d = 0 ~ 2 0 m A
V i n = 1 2 ~ 2 4 V
2 0 0 K H z , 1 n F o n H G , 1 n F o n L G
E N = l o w
6 . 0
1 0
2
2
1 4
0 . 1
1 0
1 0
m A
V
%
%
m A
u A
M a i n S w i t c h e r o u t p u t
L i n e R e g u l a t i o n
L o a d R e g u l a t i o n
5 V < V i n < 2 8 V
0 A < l o a d c u r r e n t < 1 0 A
0 . 5
0 . 5
%
%
O u t p u t V o l t a g e A c c u r a c y
W i t h o u t f e e d b a c k a t t e n u a t i o n ,
0 . 7 3 5
0 . 7 5 0
0 . 7 6 5
V
T A = - 4 0 o C t o + 8 5 o C
? 2005 Semtech Corp.
2
www.semtech.com
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