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KA78R33 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 KA78R33
部品説明 Low Dropout Voltage Regulator
メーカ Fairchild
ロゴ Fairchild ロゴ 

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KA78R33 Datasheet, KA78R33 PDF,ピン配置, 機能
KA78R33
Low Dropout Voltage Regulator
www.fairchildsemi.com
Features
• 1A / 3.3V 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 KA78R33 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 KA78R33 is below 0.5V in full rated
current(1A). 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
Vin 1
THERMAL SHUTDOWN
BANDGAP REFERENCE
HIGH / LOW
Vdis 4
-
+
OUTPUT
ON / OFF
1.4V
OVERVOLTAGE
PROTECTION
-
+
SOA PROTECTION
Q1
R1
SHORTC-CIRIRCCUUITIT
PROTECTION
R2
2 Vo
©2001 Fairchild Semiconductor Corporation
3
GND
Rev. 1.0.3

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