R1162N151B Datasheet, PDF (25/31 Pages) RICOH electronics devices division – 3-MODE 150mA LDO REGULATOR

R1162x
ESR vs. Output Current
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 this purpose, be sure to use a capacitor COUT with good frequency characteristics and ESR (Equivalent
Series Resistance) in the range described as follows:
The relations between IOUT (Output Current) and ESR of Output Capacitor are shown below.
The conditions when the white noise level is under 40µV (Avg.) are marked as the hatched area in the graph.
<Test conditions>
(1) Frequency band: 10Hz to 2MHz
R1162x15x (ECO=H)
VIN=2.0V to 6.0V, CIN=1µF,COUT=0.47µF
100
Topt=85°C Topt=25°C
10
Topt=-40°C
1
R1162x15x (ECO=L)
VIN=2.0V to 6.0V, CIN=1µF,COUT=0.47µF
100
10
1
0.1
0.1
0.01
0
20 40 60 80 100 120 140
Load Current IOUT(mA)
R1162x28x (ECO=H)
VIN=3.1V to 6.0V, CIN=1µF,COUT=0.47µF
100
Topt=85°C Topt=25°C
10
Topt=-40°C
1
0.01
0
20 40 60 80 100 120 140
Load Current IOUT(mA)
R1162x28x (ECO=L)
VIN=3.1V to 6.0V, CIN=1µF,COUT=0.47µF
100
10
1
0.1
0.1
0.01
0
20 40 60 80 100 120 140
Load Current IOUT(mA)
0.01
0
20 40 60 80 100 120 140
Load Current IOUT(mA)
25