KA278R05 Datasheet, PDF (1/8 Pages) Fairchild Semiconductor – Low Dropout Voltage Regulator

KA278R05
Low Dropout Voltage Regulator
www.fairchildsemi.com
Features
• 2A/5V 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 KA278R05 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.
The dropout voltage of KA278R05 is below 0.5V in full
rated current(2A). This regulator has various functions such
as a peak current protection, a thermal shut down, an
overvoltage protection and an output disable function.
TO-220F-4L
1
1.Vin 2. Vo 3. GND 4. Vdis
Internal Block Diagram
Vin 1
THERMAL SHUTDOWN
BANDGAP REFERENCE
HIGH / LOW
Vdis 4
-
+
OUTPUT
ON / OFF
1.4V
OVERVOLTAGE
PROTECTION
-
+
SOA PROTECTION
SH_SO_HR_OT_R-C_TCIR_IRC_CU_UIT_IT
PROTECTION
Q1
R1
R2
2 Vo
3
GND
©2002 Fairchild Semiconductor Corporation
Rev. 1.0.2