參數(shù)資料
型號(hào): KA278R51
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Low Dropout Voltage Regulator(低壓差穩(wěn)壓器)
中文描述: 5.1 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PSFM4
封裝: TO-220F, 4 PIN
文件頁(yè)數(shù): 1/8頁(yè)
文件大小: 50K
代理商: KA278R51
2000 Fairchild Semiconductor International
www.fairchildsemi.com
Rev. 5.0
Features
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. Vin 2. Vo 3. GND 4. Vdis
1
Internal Block Diagram
THERMAL SHUTDOWN
BANDGAP REFERENCE
OVERVOLTAGE
PROTECTION
SOA PROTECTION
PROTECTION
1
4
3
2
Vin
Vdis
Vo
GND
HIGH / LOW
OUTPUT
ON / OFF
Q1
R1
R2
-
+
-
+
1.4V
SHORT-CIRCUIT
KA278R51
Low Dropout Voltage Regulator
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