R1180N121B Datasheet, PDF (15/24 Pages) RICOH electronics devices division – 150mA LDO REGULATOR

R1180x
5.0
4.5
4.0
3.5
3.0
2.5
2.0
0
20
40
R1180x281x
COUT=Ceramic1.0µF
150
100
Output Current
50
0
Output Voltage
−50
−100
−150
60
80
100
120
140
160
180
200
Time T[µs]
12) ESR vs. Output Current
R1180x121x(CIN =Ceramic 1.0µA, COUT =Ceramic 0.1µF)
1000
R1180x281x(CIN =Ceramic 1.0µA, COUT =Ceramic 0.1µF)
1000
100
100
10
10
1
1
0.1
0.1
0.01
0
50
100
150
Output Current IOUT [mA]
0.01
0
50
100
150
Output Current IOUT [mA]
The relations between IOUT (Output Current) and ESR of an output capacitor are shown above. The conditions
when the white noise level is under 40µV (Avg.) are marked as the hatched area in the graph.
<Measurement conditions>
(1) VIN=VOUT+1V
(2) Frequency Band: 10Hz to 2MHz (BW=30Hz)
(3) Temperature: −40°C to 85°C
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