UC3844 - UTC

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

UC3844
Manufacturer

UTC
ChipWorker Part#

CW117909976
Package

DIP-8
Description

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
Documentation

Datasheet

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UC3844 Specifications

Attribute	Attribute Value

Part Number	UC3844
Manufacturer	UTC
ChipWorker Part#	CW117909976
Documentation	Datasheet
Mounting Style	Through Hole
Case/Package	DIP-8

Product Description

DESCRIPTION
The UTC UC3844/3845 are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count. The differences between UC3844 and UC3845 are the maximum duty cycle ranges and under-voltage lockout thresholds. The UC3844 ideally suited to off-line applications with UVLO thresholds of 16V(ON) and 10V(OFF), and UC3845 has UVLO thresholds of 8.5V(ON) and 7.6V(OFF) for lower voltage applications.
FEATURES
* Operation output switching frequency up to 500 kHz
* Output deadtime adjustable from 50% to 70%
* Automatic feed forward compensation
* Latching PWM for cycle-by-cycle current limiting
* High current totem pole output
* Internally trimmed reference with under voltage lockout
* UVLO with hysteresis
* Low startup and operating current

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