R1100D_17 Datasheet, PDF (7/16 Pages) RICOH electronics devices division – ULTRA SMALL PACKAGE VOLTAGE REGULATOR

R1100D
OPERATION
These ICs, the output voltage VOUT is detected by Feedback Resisters, and the detected output voltage is
compare with a reference voltage by the error amplifier, so that a constant voltage is output.
A current limit circuit against short protection and a chip enable circuit are included.
TEST CIRCUITS
VDD
VIN
CIN
1μF
R1100D
Series
VOUT
IOUT
VOUT
GND
COUT
1μF
IOUT
VIN
VDD
CIN
1μF
R1100D
Series
VOUT
GND
Standard Test Circuit
VDD
P.G.
R1100D
Series
VOUT
IOUT
VOUT
GND
COUT
1μF
Test Circuit for Supply Current
Test Circuit for Line Transient Response
TECHNICAL NOTES
In R1100D Series, a constant voltage can be obtained without using capacitors. However, when the wire
connected VIN is long, use a capacitor. Output noise can be reduced with using capacitor.
Insert capacitors with the capacitance of 0.1μF to 2.2μF between input/output pins and GND pin as close as
possible.
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