ADP5042 Analog Devices, ADP5042 Datasheet - Page 13

• Manufacturer Part Number: ADP5042
• Description: Micro PMU with 0.8 A Buck, Two 300 mA LDOs, Supervisory, Watchdog and Manual Reset
• Manufacturer: Analog Devices

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