H78LXX datasheet(1/10 Pages) HSMC | 3-TERMINAL POSITIVE VOLTAGE REGULATORS

1 page

HI-SINCERITY

MICROELECTRONICS CORP.

Spec. No. : IC200403

Issued Date : 2004.03.01

Revised Date : 2004.08.31

Page No. : 1/10

H78LXXAM / BM, H78LXXAA / BA

HSMC Product Specification

H78LXXAM / BM

H78LXXAA / BA

3-TERMINAL POSITIVE VOLTAGE REGULATORS

Description

These regulators employ internal current-limiting and thermal-shutdown,

making them essentially indestructible. They can deliver up to 100mA

output current.

Features

• Maximum Output Current of 100mA (Tc=25°C)

• Internal Short-Circuit Current Limiting

• Internal Thermal Overload Protection

• TO-92 & SOT-89 Package

Absolute Maximum Ratings

(Ta=25

°C, Unles Otherwise Specified)

Characteristic

Symbol

Rating

Unit

Input Voltage

TO-92

700

Power Dissipation

SOT-89

500

Operating Temperature

opr

-30 to 85

Storage Temperature

stg

-55 to 150

Junction Temperature

150

Thermal Resistance

th(j-a)

208

oC/W

Schematic Diagram & Equivalent Circuit

H78LXX Series Pin Assignment

Typical Application

Schematic Diagram

Equivalent Circuit

VOUT

VIN

3-Lead Plastic TO-92

Package Code: A

Pin 1: VOUT

Pin 2: GND

Pin 3: VIN

1 2

3-Lead Plastic SOT-89

Package Code: M

Pin 1: VOUT

Pin 2: GND

Pin 3: VIN

Note 1: C

IN is required if regulator is

located an appreciable distance from

power supply filter.

Note 2: C

OUT is not needed for stability;

however, it does improve transient

response. Values of less than 0.1uF could

cause instability.

H78LXX

Series

VOUT

VIN

CIN

0.33uF

(Note 1)

COUT

0.1uF

(Note 2)

Starting

Circuit

Reference

Voltage

Current

Generator

Error

Amplifier

SOA

Protection

Thermal

Protection

Series

Pass

Element

Output

GND

Input

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