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Fairchild Semiconductor - KA78RM33

Numéro de référence 78RM33
Description KA78RM33
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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78RM33 fiche technique
February 2006
KA78RM33
Low Dropout Voltage Regulator
Features
0.5A/3.3VPOAuCtpKutALoGwEDrDopIoMutEVNolStagIOe RNeSgulator
Low Dropout Voltage (Max. 0.6V)
Over Current Protection, Thermal Shutdown
SOA Protection, Short Circuit Protection
www.DataSheet4U.com
Description
The KA78RM33 is a low-dropout voltage regulator suit-
able for various electronic equipments. It provides con-
stant voltage power source with surface mount type
package (D-PAK). The dropout voltage of KA78RM33 is
below 0.6V in full rated current(0.5A). This regulator has
various functions such as an over current protection, a
thermal shut down and the SOA (Safe operating Area)
protection.
Internal Block Diagram
VIN 1
Current
Generator
Thermal
Shutdown
Protection
Short Circuit
Protection
Bandgap
Reference
Error
Amp.
GND 2
Packages
D-PAK
Q1
SOA
Protection
3 VOUT
Output
Drive
R1
R2
TO-220
2
13
123
1. VIN 2. GND 3. VOUT
©2006 Fairchild Semiconductor Corporation
KA78RM33 Rev. 1.0.4
1
www.fairchildsemi.com

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