1

2

3

E

D

C

B

A

3

bq27320

www.ti.com

SLUSCG9A – FEBRUARY 2016 – REVISED MARCH 2016

Product Folder Links: bq27320

Submit Documentation Feedback

Copyright © 2016, Texas Instruments Incorporated

5 Device Comparison Table

ORDER NUMBER

PACKAGE

PACKAGE QUANTITY

BODY SIZE

bq27320YZFT

YZF

250

1.375 mm x 2.75 mm x 1.75 mm

bq27320YZFR

3000

(1)

I/O = Digital input/output, IA = Analog input, P = Power connection

6 Pin Configuration and Functions

Pin Functions

PIN

TYPE

DESCRIPTION

NAME

NUMBER

SRP

A1

Analog input pin connected to the internal coulomb counter with a Kelvin connection where SRP is nearest the

PACK– connection. Connect to 5-m

Ω to 20-mΩ sense resistor.

SRN

B1

IA

Analog input pin connected to the internal coulomb counter with a Kelvin connection where SRN is nearest the Vss

connection. Connect to 5-m

Ω to 20-mΩ sense resistor.

C1, C2

P

Device ground

D1

P

Regulator output and bq27320 processor power. Decouple with 1-

μF ceramic capacitor to Vss.

REGIN

E1

P

Regulator input. Decouple with 0.1-

SOC_INT

A2

O

BAT_GD

B2

O

Battery Good push-pull indicator output. Active-low and output disabled by default. Polarity is configured via Op

Config [BATG_POL] and the output is enabled via OpConfig C [BATGSPUEN].

CE

D2

I

Chip Enable. Internal LDO is disconnected from REGIN when driven low. Note: CE has an internal ESD protection

BAT

E2

I

Cell-voltage measurement input. ADC input. Recommend 4.8V maximum for conversion accuracy.

SCL

A3

I

10-k

Ω pull-up resistor (typical).

SDA

B3

I/O

Ω

pull-up resistor (typical).

SDQ

C3

O

Communication interface to Authentication ID IC, using the SDQ protocol

TS

D3

IA

Pack thermistor voltage sense (use 103AT-type thermistor). ADC input

BI/TOUT

E3

I/O

Battery-insertion detection input. Power pin for pack thermistor network. Thermistor-multiplexer control pin. Use with

pull-up resistor >1M

Ω (1.8 MΩ typical).