S3882

Semiconductor S3882 Current Mode PWM Controller Descriptions The S3882 is fixed PWM controller for Off-line and DC-DC converter applications. The internal circuits include UVLO, low start up current circuit, temperature compensated reference, high gain error amplifier, current sensing comparator, and high current totempole output for driving a power MOSFET. Also S3882 provide low start up current below 0.3mA and short shutdown delay Time typical 100nsec. S3882 have UVLO threshold of 16V(on) and 10V(off). . Features Low start up current < 0.3mA Operating range up to 500KHz Cycle by cycle current limiting Under Voltage Lock Out with hysteresis Short shutdown delay time ; typical 100nsec High current totempole output Output swing limiting : 22V Ordering Information Type NO. S3882 Marking S3882 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-8008-001 1 S3882 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 28 1 -0.3 to 6.3 10 1 Unit V A V mA W Electrical 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...