KA78RH33RTM Datasheet, PDF (1/5 Pages) Fairchild Semiconductor – Low Dropout Voltage Regulator

June 2014
KA78RH33R
Low Dropout Voltage Regulator
Features
• Fixed Output Voltage of +3.3 V
• Space-Saving SMD Types of DPAK
• 1 V (Typical) Dropout at I_O = 800 mA
• Output Current: 800 mA
• 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
operation. The maximum load current is 0.8 A and the
dropout voltage is guaranteed to be 1 V (typical). The
dropout voltage varies with load current. The regulator
consists of composite PNP-NPN pass transistors.
D-PAK
1
1. GND 2. V_OUT 3.V_IN
Ordering Information
Part Number
KA78RH33RTF
KA78RH33RTM
Operating Tem-
perature Range
-25°C to +125°C
-25°C to +125°C
Top Mark
KA78RH33
KA78RH33
* Refer to above unit orientation figure for TM / TF suffix packing.
Block Diagram
Package
TO-252 3L (DPAK)
TO-252 3L (DPAK)
Packing Method
Tape and Reel
Tape and Reel
3.₃V_.IVNin
CURRENT
GENERATOR
PROTECTION
CIRCUIT
22.V.V_Oo_Uu_Tt
© 2001 Fairchild Semiconductor Corporation
KA78RH33R Rev. 1.1.0
Figure 1. Block Diagram
1
1.GND
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