RT5112A
LDO4 Load Regulation
LDO1 Dropout Voltage vs. Load Current
1.798
1.796
1.794
1.792
1.790
100
80
60
40
20
0
85°C
25°C
-40°C
VIN4 = 4.35V
VIN4 = 3.8V
VIN4 = 3V
1.788
1.786
1.784
VIN4 = 2.8V
VIN4 = 2.5V
VIN4 = 1.95V
VLDO1 = 2.8V
VLDO4 = 1.8V
0.25 0.30
0.00
0.05
0.10
0.15
0.20
0
50
100
150
200
250
300
Load Current (A)
Load Current (A)
LDO2 Dropout Voltage vs. Load Current
LDO3 Dropout Voltage vs. Load Current
140
120
100
80
100
80
60
40
20
0
85°C
25°C
-40°C
85°C
25°C
-40°C
60
40
20
VLDO2 = 2.8V
VLDO3 = 1.8V
0
0
50
100
150
200
250
300
0
50
100
150
200
250
300
Load Current (A)
Load Current (A)
LDO4 Dropout Voltage vs. Load Current
LDO1/2 PSRR
20
0
140
120
100
80
85°C
25°C
-40°C
-20
-40
-60
-80
-100
LDO1
LDO2
60
40
20
VIN12 = 3.4V, VLDO1/VLDO2 = 2.8V,
ILDO1/ILDO2 = 100mA
VLDO4 = 1.8V
0
100
1000
10000
100000 1000000 10000000
0
50
100
150
200
250
300
Load Current (A)
Frequency (Hz)
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18
DS5112A-02 August 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
