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參數(shù)資料
| 型號： | SC1103CS |
| 廠商： | Semtech Corporation |
| 英文描述： | VOLTAGE MODE PWM CONTROLLER |
| 中文描述： | 電壓模式PWM控制器 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大小： | 97K |
| 代理商： | SC1103CS |
SC1103
2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA
VOLTAGE MODE PWM CONTROLLER
PRELIMINARY - February 29, 2000
6
be decoupled directly to GND by a 0.1
μ
F ceramic ca-
pacitor, trace lengths should be as short as possible.
7) The Current Sense resistor and the divider across it
should form as small a loop as possible, the traces run-
ning back to CS(+) and CS(-) on the SC1103 should
run parallel and close to each other. The 0.1μF capaci-
tor should be mounted as close to the CS(+) and CS(-)
pins as possible.
8) To minimize noise pickup at the sensitive FB pin,
the feedback resistors should both be close to the
SC1103 with the bottom resistor (Rb) returned to
ground at the GND pin.
Under Voltage Lockout
The under voltage lockout circuit of the SC1103 as-
sures that the high-side MOSFET driver outputs remain
in the off state whenever the supply voltage drops be-
low set parameters. Lockout occurs if V
CC
falls below
3.8V. Normal operation resumes once V
CC
rises above
3.8V.
Fig. 8: 5V to 3.3V @ 8A
TYPICAL APPLICATIONS
Q1
IRL3103S
R4
2.7
R2
1k
MD1
R1
10
L1
5.6uH
C9
C10
C11
C3
C2
C6
0.1
R7
124
R6
205
C1
0.1
C7
+3.3V
+5V
GND
C8
0.1
C12
0.1
R5
0.012
R3
1k
GND
VCC
1
Cs(-)
2
Cs(+)
3
PGND
4
DH
5
BST
6
FB
7
GND
8
U1
C5
0.1
+12V
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| SC1109 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC1103CS.TR | 制造商:Semtech Corporation 功能描述:Voltage Mode PWM Controller 500mA 8-Pin SOIC T/R |
| SC1103CS.TR.T | 制造商:Semtech Corporation 功能描述:Voltage Mode PWM Controller 500mA 8-Pin SOIC T/R |
| SC1103CS.TRT | 制造商:Semtech Corporation 功能描述:Voltage Mode PWM Controller 500mA 8-Pin SOIC T/R |
| SC1103CSTRT | 制造商:Semtech Corporation 功能描述:IC VOLTAGE MODE PWM CTRL 12V 8-SOIC |
| SC1104 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Simple, Synchronous Voltage Mode PWM Controller |
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