R1162N151B Datasheet, PDF (24/31 Pages) RICOH electronics devices division – 3-MODE 150mA LDO REGULATOR

R1162x
TECHNICAL NOTES
IN
OUT
VDD
OUT
R1162x
C1
SERIES
GND
C2
CEï½¥CE
ECO
(External Components)
C2 Ceramic 0.47µF Ex. Murata GRM40B474K
Kyocera CM105B474K
C1 Ceramic 1.0µF
When using these ICs, consider the following points:
1.Mounting on PCB
Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.
Connect a capacitor with as much as 1.0µF capacitor between VDD and GND pin as close as possible.
Set external components, especially the output capacitor as close as possible to the ICs and make wiring as
short as possible.
2.Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, be sure to use a 0.47µF or more capacitor COUT with good frequency characteristics and ESR
(Equivalent Series Resistance).
If you use a tantalum type capacitor and ESR value of the capacitor is large, output might be unstable.
Evaluate your circuit with considering frequency characteristics.
Depending on the capacitor size, manufacturer, and part number, the bias characteristics and temperature
characteristics are different. Evaluate the circuit with actual using capacitors.
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