KA3511DS

Duty Cycle (Max) :
Operating Supply Voltage :
Supply Current :
Number of Outputs : Dual Output
Packaging : Tube
Maximum Operating Temperature : + 85 C
Topology : Push-Pull
Output Voltage : 40 V
Output Current : 200 mA
Minimum Operating Temperature : - 25 C
Switching Frequency : 10 KHz
Package / Case : SDIP-24


Features:

• Complete PWM control and house keeping circuitry
• Few external components
• Precision voltage reference trimmed to 2%
• Dual output for push-pull operation
• Each output TR for 200mA sink current
• Variable duty cycle by dead time control
• Soft start capability by using dead time control
• Double pulse suppression logic
• Over voltage protection for 3.3V / 5V / 12V
• Under voltage protection for 3.3V / 5V / 12V
• One more external input for various protection (PT)
• Remote on/off control function (PS-ON)
• Latch function controlled by remote and protection input
• Power good signal generator with hysteresis



Pinout




Specifications

Parameter	Symbol	Value	Unit
Supply voltage	VCC	40	V
Collector output voltage	VC1, VC2	40	V
Collector output current	IC1, IC2	200	mA
Power dissipation(KA3511DS)	PD	1.5	W
Operating temperature	TOPR	−25 to 85
Storage temperature	TSTG	−65 to 150

Description

The KA3511DS is a fixed frequency improved performance pulse width modulation control circuit with complete housekeeping circuitry for use in the secondary side of SMPS (Switched mode power supply). It contains various functions, which are precision voltage reference, over voltage protection, under voltage protection, remote on/off control, power good signal generator and etc.

Parameters:

Technical/Catalog Information	KA3511DS
Vendor	Fairchild Semiconductor
Category	Integrated Circuits (ICs)
PWM Type	Current Mode
Number of Outputs	3
Package / Case	24-SDIP
Packaging	Tube
Duty Cycle	50%
Voltage - Supply	14 V ~ 40 V
Frequency-Max	-
Buck	No
Boost	No
Flyback	No
Inverting	No
Doubler	No
Divider	No
Cuk	No
Isolated	No
Drawing Number	*
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	KA3511DS KA3511DS