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UC3842G

HIGH PERFORMANCE CURRENT MODE CONTROLLER

Unisonic Technologies 

UNISONIC TECHNOLOGIES CO., LTD

UC3842G

LINEAR INTEGRATED CIRCUIT

HIGH PERFORMANCE

CURRENT MODE

CONTROLLER

■ DESCRIPTION

The UTC UC3842G of high performance current mode

controller is specifically designed for off-line and DC-to-DC

converter applications offering the designer a cost effective

solution with minimal external components. This integrated

circuit features approximately 300μA start up current, a

precision reference trimmed the error amplifier input. Also

included are protective features consisting of input and

reference undervoltage lockouts each with hysteresis,

cycle-by-cycle current limiting, and so on.

■ FEATURES

* Low startup and operating current

* User defined switching frequency(Norm is 52kHz)

* Power-saving mode for low power

* Under voltage lockout with hysteresis

* Over voltage protection

* Latching PWM for Cycle-By-Cycle current limiting

* Internally trimmed reference with undervoltage lockout

Lead-free: UC3842GL

Halogen-free: UC3842GP

„ ORDERING INFORMATION

Normal

UC3842G-S08-R

UC3842G-S08-T

UC3842G-D08-T

Ordering Number

Lead Free

UC3842GL-S08-R

UC3842GL-S08-T

UC3842GL-D08-T

Halogen Free

UC3842GP-S08-R

UC3842GP-S08-T

UC3842GP-D08-T

Package

SOP-8

SOP-8

DIP-8

Packing

Tape Reel

Tube

Tube

www.unisonic.com.tw

Copyright © 2008 Unisonic Technologies Co., Ltd

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