1 of 20

011005

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

GENERAL DESCRIPTION

The DS2764 high-precision Li+ battery monitor is a

data-acquisition, information-storage, and safety-

protection device tailored for cost-sensitive battery

pack applications. This low-power device integrates

precise

temperature,

voltage,

and

current

measurement, nonvolatile (NV) data storage, and Li+

protection into the small footprint of either a TSSOP

package or flip-chip package. The DS2764 is a key

component

in applications requiring remaining

capacity estimation, safety monitoring, and battery-

specific data storage.

PIN CONFIGURATIONS

FEATURES

§

Li+ Safety Circuit

Overvoltage Protection

Overcurrent/Short-Circuit Protection

Undervoltage Protection

§

0V Battery Recovery Charge

§

Available in Two Configurations:

Internal 25m

W Sense Resistor

External User-Selectable Sense Resistor

§

Current Measurement

12-Bit Bidirectional Measurement

Internal Sense Resistor Configuration:

0.625mA LSB and ±1.9A Dynamic Range

External Sense Resistor Configuration:

15.625

mV LSB and ±64mV Dynamic Range

§

Current Accumulation:

Internal Sense Resistor: 0.25mAhr LSB

External Sense Resistor: 6.25

mVhr LSB

§

Voltage Measurement with 4.88mV Resolution

§

Temperature Measurement Using Integrated

Sensor with 0.125°C Resolution

§

40 Bytes of Lockable EEPROM

§

Option for Unique 64-bit ID

§

Industry 2-Wire Interface with Programmable

Slave Address

§

Low-Power Consumption:

Active Current: 60

mA typ, 90mA max

Sleep Current: 1

mA typ, 2mA max

APPLICATIONS

PDAs

Cell Phones/Smartphones

Digital Cameras

ORDERING INFORMATION

PART

TEMP RANGE

PIN-PACKAGE

DS2764BE

-20°C to +70°C

16 TSSOP

Selector Guide appears at end of data sheet, for additional

options.

DS2764

High-Precision Li+ Battery Monitor

with 2-Wire Interface

www.maxim-ic.com

TOP VIEW

CC

SCL

SDA

IS1

TSSOP

IS2

SNS

SNS

1

2

23

2

1

4

5

6

7

8

16

15

14

13

12

11

10

9

SNS

PS

PLS

DC

FLIP CHIP

(TOP VIEW

¾BUMPS ON BOTTOM)

PLS

DC

PS

CC

IS2

IS1

SCL

SDA

SNS

1

2

3

4

A

B

C

D

E

F

SNS

PROBE

PROBE