ADP5042

Manufacturer Part NumberADP5042
DescriptionMicro PMU with 0.8 A Buck, Two 300 mA LDOs, Supervisory, Watchdog and Manual Reset
ManufacturerAnalog Devices
ADP5042 datasheet
 


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Data Sheet
SW
1
VOUT
V
2
OUT
LOAD
3
B
CH1
4V/DIV
20.0M
A CH3
W
B
CH2
50mV/DIV
20.0M
W
B
CH3
50mA/DIV 1MΩ
20.0M
W
Figure 27. Buck Response to Load Transient, IOUT2 from 1 mA to 50 mA,
VOUT2 = 1.8 V, Auto Mode
SW
1
VOUT
2
LOAD
3
B
CH1
4V/DIV
20.0M
A CH3
W
B
CH2
50mV/DIV
20.0M
W
B
CH3
50mA/DIV 1MΩ
20.0M
W
Figure 28. Buck Response to Load Transient, IOUT1 from 20 mA to 140 mA,
VOUT1 = 3.3 V, Auto Mode
SW
2
VOUT1
3
LOAD
4
B
A CH3
CH2
4V/DIV
1MΩ
20.0M
W
B
CH3
50mV/DIV 1MΩ
20.0M
W
B
CH4
50mA/DIV 1MΩ
20.0M
W
Figure 29. Buck Response to Load Transient, IOUT2 from 20 mA to 180 mA,
VOUT1 = 1.8 V, PWM Mode
3
1
2
28mA
200µs/DIV
5MS/s
200ns/pt
3
1
2
86mA
200µs/DIV
10MS/s
100ns/pt
1.510
1.508
1.506
1.504
1.502
145mA
200µs/DIV
1.500
50MS/s
20ns/pt
Figure 32. LDO1 Load Regulation Across Input Voltage, VOUT2 = 1.5 V
Rev. A | Page 13 of 32
IIN
VOUT
EN
B
CH1
1V/DIV
1MΩ
500M
A CH2
1.14V
W
B
CH2
3V/DIV
1MΩ
500M
W
B
CH3
50mA/DIV 1MΩ
20.0M
W
Figure 30. LDO1 Startup, VOUT3=1.5 V, IOUT3 = 5 mA
IIN
VOUT
EN
B
CH1
1V/DIV
1MΩ
500M
A CH2
1.14V
W
B
CH2
3V/DIV
1MΩ
500M
W
B
CH3
50mA/DIV 1MΩ
20.0M
W
Figure 31. LDO2 Startup, VOUT3=3.3 V, IOUT3 = 5 mA
3.3V
4.5V
5.0V
5.5V
0.0001
0.001
0.01
OUTPUT CURRENT (A)
ADP5042
50µs/DIV
2MS/s
500ns/pt
100µs/DIV
1MS/s
1.0µs/pt
0.1