Part Number: UTC3843D, UC3843D
Function: Current-Mode PWM Controller
Package: DIP-8, SOP-8 type
Manufacturer: UTC, TI
Images:
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
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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