HT7A6312 datasheet(1/10 Pages) HOLTEK

Part #	HT7A6312

Description	Low Power Primary Switcher for Off Line SMPS

PDF	10 Pages

Scroll/Zoom	100%

Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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1 / 10 page

Rev. 1.00

1

December 24, 2014

Rev. 1.00

PB

December 24, 2014

HT7A6312

Low Power Primary Switcher for Off Line SMPS

Features

• Fixed60kHzswitchingfrequency

• 9Vto38VwiderangeVCCvoltage

• WideACinputrangefrom85VACto265VAC

• PWMwithcurrentmodecontrol

• AuxiliaryUnderVoltageLockOutwithhysteresis

• Highvoltagestart-upcurrentsource

• Excellentstandbylowpowerconsumption

• Over-temperature,Over-currentandOver-voltage

protectionwithauto-restart

• Integrated730VMOSFET

• Burstmodeunderlowloadconditions

Applications

• Offlinepowersupplyforbatterychargeradapters

• StandbypowersupplyforTVormonitors

• Auxiliarysupplyformotorcontrol

• Airconditionerpowersupply

• Electromagneticovenpowersupply

General Description

TheHT7A6312ishighlyfunctionallyintegrated

devicewhichcombinesanintegratedPWMcontroller

withcurrentmodecontrolandahighvoltagepower

MOSFETonthesamesiliconchip.

Typical Power Capability

Type

8SOP

8DIP

European (195~265VAC)

8W

13W

US (85~265VAC)

5W

8W

Typical Performance Characteristics Application Circuit

Isolation Flyback Topology

VOUT+

VOUT-

PC817

TL431

HT7A6312

VSS

SW

FB

VCC

Vac

Snubber Circuit

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HT7A6312 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc

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