KA3524

Switching Frequency :
Output Voltage :
Number of Outputs :
Duty Cycle (Max) :
Mounting Style : Through Hole
Maximum Operating Temperature : + 70 C
Output Current : 100 mA
Package / Case : DIP-16
Input Voltage : 20 V


Features:

• Complete PWM power control circuit
• Operation beyond 100KHz
• 2% frequency stability with temperature
• Total quiescent current less than 10mA
• Single ended or push-pull outputs
• Current limit amplifier provides external component protection
• On-chip protection against excessive junction temperature and output current
• 5V, 50mA linear regulator output available to user


Specifications

Parameter	Symbol	Value	Unit
Supply Voltage	Vcc	40	V
Reference Output Current	IREF	50	mA
Output Current (Each Output)	IO	100	mA
Oscillator Charging Current (pin 6 or 7)	ICHG(OSC)	5	mA
Lead Temperature (Soldering, 10 sec)	TLEAD	300	°C
Power Dissipation(TA = 25°C)	PD	1000	mW
Operating Temperature	Topr	0 ~ +70	°C
Storage Temperature	Tstg	-65 ~+150	°C

Description

The KA3524 regulating pulse width modulator contains all of the control circuit necessary to implement switching regulators of either polarity, transformer coupled DC to DC converters, transformerless polarity converters and voltage doublers, as well as other power control applications. This device includes a 5V voltage regulator capable of supplying up to 50mA to external circuit , a control amplifier, an oscillator, a pulse width modulator, a phase splitting flip-flop, dual alternating output switch transistors, and current limiting and shut-down circuit. Both the regulator output transistor and each output switch are internally current limiting and, to limit junction temperature, aninternal thermal shutdown circuit is employed.

Parameters:

Technical/Catalog Information	KA3524
Vendor	Fairchild Semiconductor
Category	Integrated Circuits (ICs)
PWM Type	Voltage Mode
Number of Outputs	2
Package / Case	16-DIP
Packaging	Tube
Duty Cycle	45%
Voltage - Supply	8 V ~ 40 V
Frequency-Max	350kHz
Buck	No
Boost	No
Flyback	Yes
Inverting	Yes
Doubler	Yes
Divider	No
Cuk	No
Isolated	No
Drawing Number	*
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	KA3524 KA3524