R1191 Datasheet, PDF (32/33 Pages) RICOH electronics devices division – Supply Current Typ. 50uA (Fast Mode)

R1191x
ESR vs. Output Current
When using these ICs, consider the following points:
The relations between IOUT (Output Current) and ESR of an 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.
Measurement conditions
Frequency Band : 10Hz to 1MHz
Temperature : −40°C to 85°C
Hached Area : Noise level is under 40μVms(Avg.)
CIN
: 2.2μF Murata (GRM32RB11E225KC01B)
COUT
: 4.7μF Murata (GCM31CR71E475KA40)
R1191x020x ECO=H, ECO=L
100
10
1
0.1
0.01
0
100
200
300
Output Current IOUT (mA)
R1191x150x ECO=H, ECO=L
100
10
1
0.1
0.01
0
100
200
300
Output Current IOUT (mA)
R1191x050x ECO=H, ECO=L
100
10
1
0.1
0.01
0
100
200
300
Output Current IOUT (mA)
32