HT78BXX datasheet(2/16 Pages) HOLTEK

Part #	HT78BXX

Description	High PSRR 500mA LDO Regulator

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Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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2 / 16 page

Rev. 1.00

2

August 25, 2011

HT78Bxx

Block Diagram

GND

VOUT

Vref

Short Current

Shutdown

VIN

CE

Absolute Maximum Ratings (Note 1)

MaximumInputSupplyVoltage...........................................................................................................................7.5V

AmbientTemperatureRange..................................................................................................................-40°C~+85°C

Thermal Information

Symbol

Parameter

Package

Max.

Unit

θJA

Thermal Resistance

(Junction to Ambient)

(Assume no ambient airflow,

no heat sink)

SOT23-5

500

°C/W

SOT223

134

°C/W

SOT89

200

°C/W

PD

Power Dissipation

SOT23-5

0.20

W

SOT223

0.75

W

SOT89

0.50

W

Note: PD is measured at Ta= 25°C

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HT78BXX Datasheet(PDF) 2 Page - Holtek Semiconductor Inc

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