KA3882E

Operating Supply Voltage :
Operating Supply Current :
Number of Outputs : 1
Mounting Style : Through Hole
Rise Time : 40 ns
Switching Frequency : 500 KHz
Duty Cycle (Max) : 100 %
Maximum Operating Temperature : + 70 C
Package / Case : PDIP-8
Fall Time : 40 ns


Features:

• Low start current 0.2mA (typ)
• Operating range up to 500kHz
• Cycle by cycle current limiting
• Under voltage lock out with hysteresis
• Short shutdown delay time: typ.100ns
• High current totem-pole output
• Output swing limiting: 22V


Specifications

Parameter	Symbol	Value	Unit
Supply voltage	VCC	30	V
Output current	IO	+1	A
Analog inputs (pin2, 3)	VI(ANA)	-0.3 to 6.3	V
Error amp. output sink current	ISINK(EA)	10	mA
Power dissipation	PD	1	W
Thermal resistance, junction-to-air (Note4) 8-SOP 8-DIP	Rja	280 95	°C/W
Storage temperature	Tstg	-65 ~ 150	°C

Description

The KA3882E/KA3883E is a fixed PWM controller for Off-Line and DC to DC converter applications. The internal circuits include a UVLO, a low start-up current circuit, a temperature compensated reference, a high gain error amplifier, a current sensing comparator, and the high current totem-pole output for driving a POWER MOSFET. Also the KA3882E/KA3883E provides low start-up current below 0.3mA and short shutdown delay time typ. 100ns. The KA3882E has UVLO threshold of 16V(on) and 10V(off).

The KA3883E is 8.4V(on) and 7.6V(off). The KA3882E and KA3883E can operate within 100% duty cycle.