AUK Corporation S3843
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.| Part No. | S3843 |
|---|---|
| Datasheet | S3843 Download |
| Manufacturer |  AUK Corporation |
| Description | Current Mode PWM Controller |
| Buy | Stock & Price |
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. S3843 Marking S3843 Package Code SOP-8 Outline Dimensions unit : mm PIN Connections 1. Output / Compensation 2. Voltage feedback. Input 3. Current sense Input 4. Rt/Ct 5. GND 6. Output 7. Vcc 8. Vref KSI-8007-001 1 S3843
ABSOLUTE MAXIMUM RATINGS
Characteristic Supply Voltage Output Current Analog Inputs Error Amp. Output Sink current Power Dissipation Ta=25°C Symbol Vcc Io Vi(ana) Isink(EA) Pd Ratings 30 1 -0.3 to 6.3 10 1 Unit V A V mA WELECTRICAL CHARACTERISTICS
(Vcc=15V, Rt=10Kohm, Ct=3.3nF, Ta=0℃ to 70℃, Unless otherwise specified) Characteristic 1. Reference Section Output Voltage Line Regulation Load Regulation Output Short Current Symbol Vref Δ Vref Δ Vref Isc FOSC △f /△V VOSC Idischarge Test Condition Tj=25℃, Io=1mA 12V ≤ VCC ≤ 25V 1mA ≤ IO ≤ 20mA Min.
