Semiconductor
S3882
Current Mode PWM Controller
Descriptions
The S3882 is fixed PWM controller for Off-line and DC-DC ...
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...