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KA278R51 Datasheet

  • KA278R51

  • Low Dropout Voltage Regulator

  • 8頁

  • FAIRCHILD

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www.fairchildsemi.com
KA278R51
Low Dropout Voltage Regulator
Features
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2A / 5.1V 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 KA278R51 is a low-dropout voltage regulator suitable
for various electronic equipments. It provide constant volt-
age power source with TO-220 4 lead full mold package.
Dropout voltage of KA278R51 is below 0.5V in full rated
current(2A). This regulator has various function such as
peak current protection, thermal shut down, overvoltage pro-
tection 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
R2
1.4V
SHORT-CIRCUIT
SHORTCIRCUIT
PROTECTION
3
GND
Rev. 1.0.1
漏2001 Fairchild Semiconductor Corporation

KA278R51 產(chǎn)品屬性

  • Fairchild Semiconductor

  • 35 V

  • 5.1 V

  • 0.5 V at 2 A

  • 2 A

  • 2 %

  • 1

  • Fixed

  • + 80 C

  • Through Hole

  • TO-220F

  • 2.5 %

  • 15 W

  • - 20 C

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