ADP5020(RevA) 查看數據表（PDF） - Analog Devices

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ADP5020
(Rev.:RevA)

Power Management Unit for Imaging Modules

Analog Devices 

Data Sheet

ADP5020

VIN = 4.5 V, VOUT1 = 2.8 V, VOUT2 = VOUT3 = 1.8 V, IOUT = 100 mA, C4 = C1 = 10 µF, C2 = 4.7 µF, C3 = 1 µF, TJ = 25°C, unless otherwise noted.

0.90

BUCK 1 OUTPUT = 2V/DIV

0.85

BUCK 2 OUTPUT = 1V/DIV

0.80

0.75

TIME = 5ms/DIV

0.70

0.65

0.60

0.55

0.50

0

EFF1 (1.1V)

EFF2 (1.2V)

EFF3 (1.3V)

EFF4 (1.4V)

EFF5 (1.5V)

EFF6 (1.6V)

EFF7 (1.7V)

EFF8 (1.8V)

50

100

150

200

250

300

LOAD CURRENT (mA)

BUCK 2

ENABLE

Figure 12. Buck 2 Efficiency vs. Load Current

Figure 15. Startup Sequence of the Three Regulators, Set by Default

BUCK 2 OUTPUT = 50mV/DIV

ILOAD = 100mA/DIV

TIME = 100µs/DIV

BUCK 2 OUTPUT = 1V/DIV

SW2 OUTPUT = 2V/DIV

TIME = 500µs/DIV

BUCK 2

BUCK 2

ILOAD

Figure 13. Buck 2 Load Transient Response

1.2

1.0

0.8

0.6

ISHTDN (µA) @ –40°C

ISHTDN (µA) @ +25°C

0.4

ISHTDN (µA) @ +125°C

0.2

0

2.0

2.5

3.0

3.5

4.0

4.5

5.0

INPUT VOLTAGE (V)

Figure 14. Shutdown Current vs. Input Voltage

SW2

Figure 16. Buck 2 Enable Startup

BUCK 1 OUTPUT = 1V/DIV

SW1 OUTPUT = 2V/DIV

TIME = 500µs/DIV

BUCK 1

SW1

Figure 17. Buck 1 Enable Startup

Rev. A | Page 11 of 28

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