ADP3020

–6–

REV. 0

CONTROL

LOGIC

INTVCC

DRV2

FB2

SD2

CPOR

PWRGD

AGND

SYNC

+

–

CS5

2.5V

3.3V

1.2V

INTVCC

–3mV

1.22V

Q

R

S

DUPLICATE FOR SECOND CONTROLLER

SHUTDOWN

1.2V

2.5V

ON5

POWER–

ON

RESET

SS5

EAO5

EAN5

1.2V

1.2V

1.44V

0.96V

OC

FB5

FB5

DRVL5

SW5

5V

1.2V

REF

INPUT

5V

+5V

LINEAR REG

AUXVCC

CLSET5

BST5

4.7V

DRVH5

VIN

1.2V

200kHz/

300kHz/

400kHz

OSC

ADJ/

FX5

–

+

4 A

PGND

0.7 A

MODE

14mV

72mV

ADP3020

SD

1.18V

30

33

32

31

8

9

11

12

21

22

25

24

23

6

5

4

3

37

35

36

38

7

2

1

PFO

PFI

+

–

19

1.20V

20

4 A

1.2V

REF

ULVO

+

–

+

–

+

–

+2%

+

–

+

–

–2%

0%

EA

+

–

+

–

+

–

34

+

–

+

–

+20%

+

–

–20%

+

–

Figure 1. Block Diagram (All Switches and Components Are Shown for Fixed Output Operation)