KA78RM33_06 Datasheet, PDF (1/6 Pages) Fairchild Semiconductor – Low Dropout Voltage Regulator

February 2006
KA78RM33
Low Dropout Voltage Regulator
Features
■ 0.5A/3.3V_PO_Au_Ctp_Kut_ALo_Gw_EDr_Dop_Io_Mut_EV_Nol_Stag_IOe R_Ne_Sgulator
■ Low Dropout Voltage (Max. 0.6V)
■ Over Current Protection, Thermal Shutdown
■ SOA Protection, Short Circuit Protection
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
V_IN 1
Current
Generator
Thermal
Shutdown
Protection
Short Circuit
Protection
Bandgap
Reference
Error
Amp.
GND 2
Packages
D-PAK
Q1
SOA
Protection
3 V_OUT
R1
Output
Drive
R2
TO-220
2
1
3
123
1. V_IN 2. GND 3. V_OUT
©2006 Fairchild Semiconductor Corporation
1
KA78RM33 Rev. 1.0.4
www.fairchildsemi.com