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S3843

AUK corp
Part Number S3843
Manufacturer AUK corp
Description Current Mode PWM Controller
Published Apr 7, 2005
Detailed Description Semiconductor S3843 Current Mode PWM Controller Descriptions The S3843 is fixed Current PWM controller for Off-line an...
Datasheet PDF File S3843 PDF File

S3843
S3843

Overview
Semiconductor S3843 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...


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