KA378R12CTU 데이터 시트보기 (PDF) - Fairchild Semiconductor

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KA378R12CTU

Low Dropout Voltage Regulator

Fairchild Semiconductor 

KA378R12C

Low Dropout Voltage Regulator

www.fairchildsemi.com

Features

• 3A/12V Output Low Dropout Voltage Regulator

• TO-220 Full-Mold Package (4Pin)

• Overcurrent Protection, Thermal Shutdown

• Overvoltage Protection, Short Circuit Protection

• With Output Disable Function

Description

The KA378R12C is a low-dropout voltage regulator suitable

for various electronic equipments. It provide constant

voltage power source with TO-220 4 lead full mold package.

Dropout voltage of KA378R12C is below 0.5V in full rated

current(3A). This regulator has various function such as

peak current protection, thermal shut down, overvoltage

protection and output disable function.

TO-220F-4L

Internal Block Diagram

Vin 1

THERMAL SHUTDOWN

BANDGAP REFERENCE

HIGH / LOW

Vdis 4

1.4V

OUTPUT

-

ON / OFF

+

1

1. Vin 2. Vo 3. GND 4. Vdis

OVERVOLTAGE

PROTECTION

-

+

SOA PROTECTION

SHSOHROTR-TCCIIRRCCUUITIT

PROTECTION

Q1

R1

R2

2 Vo

3

GND

©2005 Fairchild Semiconductor Corporation

Rev. 1.0.3

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