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KA378R05

Low Dropout Voltage Regulator
Features
3A / 5V Output low dropout voltage regulator TO220 Full-Mold package (4PIN) Overcurrent protection, Thermal shutdown Overvoltage protection, Short-Circuit protection With output disable function

Description
The KA378R05 is a low-dropout voltage regulator suitable for various electronic equipments. It provides constant voltage power source with TO-220 4 lead full mold package. Dropout voltage of KA378R05 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

1

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

Internal Block Diagram
Q1

Vin

1

2

Vo

THERMAL SHUTDOWN

OVERVOLTAGE PROTECTION

BANDGAP REFERENCE

R1

SOA PROTECTION HIGH / LOW Vdis 4 OUTPUT ON / OFF

1.4V

SHORT-CIRCUIT SHORTCIRCUIT
PROTECTION

R2

3 GND

Rev. 1.0.2
2001 Fairchild Semiconductor Corporation

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KA378R05 DATASHEET