Smallest, All-Internal MOSFET, 7-Channel

DSC PMIC in Tiny 5mm x 5mm Thin QFN

14

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BATT

LXSU

PVSU

SU

FBSU

PGSU

(EP)

PGSU

(EP)

PGSD

(EP)

PGM

(EP)

LXM

(5V, 500mA)

PVM

FBM

(3.3V, 300mA)

PVSD

LXSD

FBSD

ONSU

ONM

ONLED

ONBST

ONINV

LXINV

FBINV

SWBST

LXBST

FBBST

PVLED

SWLED

LXLED

OVLED

FBLED

PGBST

(EP)

PGLED

(EP)

EP

GND

REF

PVINV

(2V TO 5.5V)

(15V, 30mA)

(16V, 30mA)

(-7.5V, 100mA)

ONSD

PVBST

C20

0.1

μF

C18

1

μF

L2

4.7

μH

C1

22

μF

C2

22

μF

L1

2

μH

L6

4.7

μH

L7

4.7

μH

D1

D2

D3

C5

1

μF

24

33

32

30

26

27

38

39

1

35

5

34

28

40

6

10

21

7

25

8

9

11, 12

14

13

18

22

19, 20

17

23

15

16

29

LXSU

31

PVSU

37

LXZ

4

R16

100k

Ω

ONZ

2

PGZ

(EP)

FBZ

3

PVZ

36

D4

D5

D6

D7

MAX8680

C3

22

μF

C4

22

μF

C16

0.1

μF

R17

100

Ω

R2

100k

Ω

R3

232k

Ω

R1

402k

Ω

C6

10

μF

C7

10

μF

C8

10

μF

C11

1

μF

C14

1

μF

C16

1

μF

R4

100k

Ω

(1.8V, 250mA)

L3

4.7

μH

R5

80k

Ω

C10

10

μF

C9

10

μF

R6

100k

Ω

(2.5V, 200mA)

L4

4.7

μH

L5

4.7

μH

R7

150k

Ω

C12

10

μF

C13

10

μF

C15

1

μF

R8

100k

Ω

R9

1.6M

Ω

R10

100k

Ω

C17

1

μF

C19

4.7

μF

R11

1.4M

Ω

R12

100k

Ω

R13

604k

Ω

R14

100k

Ω

SDOK

R15

10

Ω

Figure 1. MAX8680 Typical Application Circuit (for Li+ Cell Design, Connect PVZ and PVINV to BATT; for Two-AA or Dual-Battery

Design, Connect PVZ and PVINV to PVSU)

NOTE: ALL CONVERTERS’ POWER GROUND CONNECTIONS

ARE THROUGH THE EXPOSED PADDLE (EP).

ABRIDGED