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參數(shù)資料
| 型號(hào)： | S3843P |
| 廠商： | AUK Corp |
| 英文描述： | Current Mode PWM Controller |
| 中文描述： | 電流模式PWM控制器 |
| 文件頁(yè)數(shù)： | 1/7頁(yè) |
| 文件大?。?/td> | 300K |
| 代理商： | S3843P |
KSI-L007-000
1
S3843P
Current Mode PWM Controller
Descriptions
The S3843 is fixed Current PWM controller for Off-line and DC-DC converter applications.
The internal circuits feature a trimmed oscillator for precise duty cycle control, a
temperature compensated reference, high gain error amplifier current sensing comparator,
and a high current totempole output for driving a power MOSFET. Protection circuitly
includes built in under voltage lockout and current limiting. S3843 have UVLO threshold of
8.4V(on) and 7.6V(off). S3843 can operate within 100% duty cycle.
Features
Optimized for off-line and DC to DC converters
Low start up current < 1 mA
Operating range up to 500 KHz
Pulse-by-pulse current limiting
Under Voltage Lock Out with hysteresis
High current totempole output
Short shutdown delay time ; typical 100nsec
Ordering
Information
Type NO. Marking Package Code
S3843P S3843P DIP-8
Outline Dimensions unit :
mm
S
S
e
e
m
m
i
i
c
c
o
o
n
n
d
d
u
u
c
c
t
t
o
o
r
r
PIN Connections
1. Output / Compensation
2. Voltage feedback. Input
3. Current sense Input
4. Rt/Ct
5. GND
6. Output
7. Vcc
8. Vref
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