HT7818 datasheet(1/11 Pages) HOLTEK

No. de pieza	HT7818

Descripción Electrónicos	500mA TinyPowerTM LDO

PDF	11 Pages

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Fabricante Electrónico	HOLTEK [Holtek Semiconductor Inc]

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HT78XX Series

500mA TinyPowerTM LDO

Selection Table

Part No.

Output Voltage

Tolerance

Package

HT7818

1.8V

±2%

SOT-89

TO-92

HT7825

2.5V

HT7827

2.7V

HT7830

3.0V

HT7833

3.3V

HT7850

5.0V

Block Diagram

Rev. 1.00

1

March 2, 2007

Features

· Output voltage ranges: Fixed range of 1.8V, 2.5V,

2.7V, 3.0V, 3.3V, 5.0V type.

· Highly accuracy: ±2%

· Low voltage drop: 360mV (typ.),

VOUT=5.0V at 500mA

· Guaranteed output current: 500mA

· Low quiescent current: 5mA (typ.)

· Current limiting

· Over-temperature shutdown

· SOT-89, TO-92 Packages

Applications

· Battery powered systems

· Personal Digital Assistants

· Peripheral cards

· PCMCIA cards

· Personal Communication Equipment

General Description

The HT78XX series of positive, linear regulators fea-

tures low quiescent current (5

mA typ.) with low dropout

voltage, making them ideal for battery applications. The

devices are capable of supplying 500mA of output cur-

rent continuously.

They are available with several fixed output voltages

ranging from 1.8V to 5.0V. Although designed primarily

as fixed voltage regulators, these devices can be used

with external components to obtain variable voltages

and currents.

These rugged devices have Thermal Shutdown and

Current Limiting to prevent device failure under the

²Worst² of operating conditions.

V O U T

V I N

G N D

V r e f

R 1

R 2

A M P

O v e r c u r r e n t

S h u t d o w n

T h e r m a l

S h u t d o w n

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