Digitally Controlled

Fuel-Gauge Interface

12

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MAX1660

BATT

CS

AGND

REF

ODI

OCI

GND

SCL

SDA

SHDN

OCO

VL

GPIO

GPIO

GPIO

R9

R7

R8

M1

M2

R10

R2

+

C3

C2

C5

R5

R3

R6

R4

C4

R11

C1

D1

R14

R13

R15

R16

SDA

SCL

SERIAL

EEPROM

RST GND

GND

PACK-

PACK+

µC

INT

RST

INT

ODO

Figure 8. Typical Application Circuit

Table 4a. OCO Logic Truth Table

Table 4b. ODO Logic Truth Table

OCHI BIT

OCLO BIT

OCSTATUS BIT

OCO OUTPUT

STATE

0

0

0

GND

Automatic overcurrent protection (default)

0

0

1

HI-Z

Overcurrent detected

0

1

X

GND

Force-charge path on

1

0

X

HI-Z

Force-charge path off

1

1

X

OCICMP

Free running

1

1

X

ODICMP

Free running

ODHI BIT

ODLO BIT

ODSTATUS BIT

ODO OUTPUT

STATE

0

0

0

GND

Automatic overcurrent protection (default)

0

0

1

HI-Z

Overcurrent detected

0

1

X

GND

Force-discharge path on

1

0

X

HI-Z

Force-discharge path off