KA78RH33 Datasheet, PDF (1/6 Pages) Fairchild Semiconductor – Semi Low Dropout Voltage Regulator

KA78RH33
Semi Low Dropout Voltage Regulator
www.fairchildsemi.com
Features
• Fixed Output Voltage of +3.3V
• Space Saving SMD types of DPAK
• 1V(Typ) Dropout at Io=800mA
• Output Current of 800mA
• Thermal Shutdown Protection
• Over Current Protection
• Output trimmed to +/-1% Tolerance
• No minimum Load Requirement
Description
The KA78RH33 is a +3.3V fixed Low Dropout Voltage
Regulator specifically designed for use in low voltage oper-
ation. The maximum load current is 0.8A and the dropout
voltage is guaranteed to be 1V(Typ). The Dropout Voltage
varies with load current. The regulator consists of compos-
ite PNP-NPN pass transistors.
D-PAK
1
1. GND 2. Vout 3.Vin
Internal Block Diagram
CURRENT
GENERATOR
PROTECTION
CIRCUIT
©2001 Fairchild Semiconductor Corporation
3.Vin
2.Vout
1.GND
Rev. 1.0.1