RP111H261D datasheet(7/44 Pages) RICOH

Part #	RP111H261D

Description	Good Transient Response Low Voltage 500mA LDO

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Manufacturer	RICOH [RICOH electronics devices division]

Direct Link	http://www.ricoh.com

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RP111x

NO.EA-241-150204

7

TYPICAL APPLICATIONS

VOUT

C1

RP111x series

VDD

VOUT

GND

C2

CE

VFB

External Parts Example:

C1, C2: Ceramic Capacitor 1.0µF, Murata, GRM155B31A105KE15

Under normal conditions, please connect the VOUT pin to the VFB pin. However, in the case of using the

Adjustable Output Voltage Type, please follow the " Notes on the Adjustable Output Voltage Type Settings".

TECHNICAL NOTES

Phase Compensation

In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For

this purpose, use a 1.0

F or more capacitor C2.

In case of using a tantalum capacitor, the output may be unstable due to inappropriate ESR. Therefore, the full

range of operating conditions for the capacitor in the application should be considered.

PCB Layout

Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.

Connect a capacitor C1 with a capacitance value as much as 1.0

F or more between VDD and GND pin, and as

close as possible to the pins.

Set external components, especially the output capacitor C2, as close as possible to the ICs, and make wiring

as short as possible.

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