r1163k281e5 RICOH Co.,Ltd., r1163k281e5 Datasheet - Page 8

• Manufacturer Part Number: r1163k281e5
• Description: 3-mode 150ma Ldo Regulator With The Reverse Current Protection
• Manufacturer: RICOH Co.,Ltd.

8
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
TYPICAL APPLICATION
TECHNICAL NOTES
Phase Compensation
this purpose, be sure to use a 0.47µF or more ceramic capacitor C2.
output voltage may be unstable.
PCB Layout
Connect a capacitor C1 with as much as 1.0µF capacitor between V
short as possible.
R1163x
When using these ICs, consider the following points:
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
(Test these ICs with as same external components as ones to be used on the PCB.)
Make V
Set external components such as an output capacitor C2, as close as possible to the ICs and make wiring as
When a tantalum capacitor is used with this IC, if the equivalent series resistor (ESR) of the capacitor is large,
2.8
Output Voltage
1.5
1.6
1.7
1.8
2.0
DD
< =
V
< =
< =
< =
< =
< =
and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.
OUT
V
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
(V)
< 1.6
< 1.7
< 1.8
< 2.0
< 2.8
< =
4.0
(External Components)
Ex. C1: Ceramic Capacitor 1.0µF
C2: Ceramic Capacitor 0.47µF
C1
I
OUT
Condition
=150mA
V
GND
CE
DD
R1163x
Series
ECO
OUT
Typ.
400
380
350
340
290
250
V
DIF
Dropout Voltage (mV)
(ECO=H)
Murata GRM40B474K
Kyocera CM105B474K
C2
DD
Max.
and GND pin as close as possible.
350
680
550
520
490
425
I
OUT
V
V
OUT
Typ.
420
390
370
350
300
250
V
DIF
(ECO=L)
Topt = 25°C
Max.
680
550
520
490
430
350