UNISONIC TECHNOLOGIES CO., LTD

MC34262

Preliminary

CMOS IC

www.unisonic.com.tw

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Copyright © 2015 Unisonic Technologies Co., Ltd

QW-R114-006 .a

POWER FACTOR

CONTROLLERS



DESCRIPTION

The UTC MC34262 is an active power factor controller that

functions as a boost preconverter in electronic ballast and in off-line

power converter applications.

These integrated circuits feature an internal startup timer for

stand-alone applications, one quadrant multiplier for near unity

power factor, zero current detector to ensure critical conduction

operation, transconductance error amplifier, quick start circuit for

enhanced startup, trimmed internal bandgap reference, current

sensing comparator, and a totem pole output ideally suited for

driving a power MOSFET.

The multi-protection function of UTC MC34262 can greatly

enhance the system reliability and safety. The UTC MC34262

features output over voltage protection, input UVLO with

hysteresis, cycle-by-cycle current limiting, multiplier output clamp

that limits maximum peak switch current, and a drive output high

state clamp for MOSFET gate protection. These devices are

available in dual-in-line and surface mount plastic packages.



FEATURES

* Output over voltage protection

* Internal Startup Timer

* One Quadrant Multiplier

* Zero Current Detector

* Trimmed 2% Internal Bandgap Reference

* Totem Pole Output with High State Clamp

* Undervoltage Lockout (UVLO) with 5.0V of Hysteresis

* Low Startup and Operating Current

* Supersedes Functionality of SG3561, TDA4817 and UTC

MC34262

DIP-8

SOP-8

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ORDERING INFORMATION

Ordering Number

Lead Free

Halogen Free

Package

Packing

MC34262L-D08-T

MC34262G-D08-T

DIP-8

Tube

-

MC34262G-S08-R

SOP-8

Tape Reel

MC34262L-D08-T

(1)Packing Type

(2)Package Type

(1) T: Tube, R: Tape Reel

(2) D08: DIP-8, S08: SOP-8

(3) L: Lead Free, G: Halogen Free and Lead Free

(3)Green Package