V

SS

SRN

SRP

V

CC

HDQ

SDA

SCL

1

2

3

4

5

6

12

11

10

9

8

7

TS

REGIN

BAT

SE

REG25

bq27541-V200

bq27541-V200

SLUSA11 – FEBRUARY 2010

www.ti.com

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

DEVICE INFORMATION

AVAILABLE OPTIONS

PRODUCTION

PACKAGE

TA

COMMUNICATION

TAPE and REEL

FORMAT

QUANTITY

bq27541DRZR-V200

3000

12-pin, 2,5-mm × 4-mm SON

–40°C to 85°C

bq27541DRZT-V200

250

(1)

bq27541-V200 is shipped in I2C mode

bq27541PIN DIAGRAMS

(TOP VIEW)

PIN FUNCTIONS

PIN

DESCRIPTION

NAME

NO.

BAT

4

I

Cell-voltage measurement input. ADC input. Decouple with 0.1mF capacitor.

REG25

2

P

2.5V output voltage of the internal integrated LDO. Connect a minimum 0.47mF ceramic capacitor.

REGIN

3

P

The input voltage for the internal integrated LDO. Connect a 0.1mF ceramic capacitor.

SCL

11

I

Ω

pull-up resistor (typical).

SDA

10

I/O

with 10k

Ω pull-up resistor (typical).

SE

1

O

Shutdown Enable output. Push-pull output.

HDQ

12

I/O

HDQ serial communications line (Slave). Open-drain.

SRN

8

IA

Analog input pin connected to the internal coulomb counter where SRN is nearest the PACK- connection.

Connect to 5-m

Ω to 20-mΩ sense resistor.

SRP

7

IA

Analog input pin connected to the internal coulomb counter where SRP is nearest the CELL- connection.

Connect to 5-m

Ω to 20-mΩ sense resistor

TS

9

IA

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

Vcc

5

P

Processor power input. The minimum 0.47mF capacitor connected to REG25 should be close to Vcc.

Vss

6

P

Device ground

(1)

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

2

Submit Documentation Feedback

Copyright © 2010, Texas Instruments Incorporated

Product Folder Link(s): bq27541-V200