UTC3843D Datasheet PDF – Current-Mode PWM Controller

Part Number: UTC3843D, UC3843D

Function: Current-Mode PWM Controller

Package:  DIP-8, SOP-8 type

Manufacturer: UTC, TI

Images:

UTC3843D PWM controller

Description

The UTC UC3842D provide the necessary functions to implement off-line or DC to DC fixed frequency current mode , controlled switching circuits with a minimal external part count.

It is specially designed for Off Line and DC-to-DC converter applications with minimal external component. This integrated circuit features a trimmed oscillator for precise duty cycle control, a temperature compensated reference, a high gain error amplifier, a current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.

Pinout

UTC3843D pinout

Features

1. Low external part count.

2. Low start up current ( Typical 0.12mA )

3. Automatic feed forward compensation

4. Pulse-by-Pulse current limiting

5. Under-voltage lockout with hysteresis

6. Double pulse Suppression

7. High current totem pole output to drive MOSFET directly

8. Internally trimmed band gap reference

9. 500kHz operation

 

Application:

1. Wireless Base Station Power

2. Telecom and Datacom Power

3. Industrial Power Systems

4. PC Power Supplies

Reference Site: https://www.dgzj.com/kgdy/78059.html

UTC3843D Datasheet PDF

 

 

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