KA3842AM Datasheet PDF – Current-Mode PWM Controller

Part Number: KA3842AM

Function: Current-Mode PWM Controller

Package: DIP, SO 8 Pin

Manufacturer: Wing Shing International Group

Image and Pinouts:

KA3842AM datasheet


The KA3842AM are  fixe frequency current-mode PWM controller. They are specially designed for OFF-Line and DC-to-DC converter applications with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totempole output ideally suited for driving a power MOSFET.


1. Low Start-Up Current

2. Maximum Duty Cycle

3. U/V Lockout With Hysteresis

4. Operating Freguency Up To 500khz

Block Diagram


Absolute Maximum Ratings :

1. Supply Voltage : Vcc = 30 V

2. Output Current : IO = ±1 A

3. Analog Inputs : VI = -0.3 to Vcc V

4. Error Amp Output Sink Current : ISINK (E.A) = 10 mA

5. Power Dissipation (TA=25°C) : PO = 1 W

Other data sheets are available within the file: KA3842, KA3842A, KA3842AMM, KA3842AMN

KA3842AM Datasheet PDF Download

KA3842AM pdf