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072303

FEATURES

§ Lithium-Ion (Li+) Safety Circuit

- Overvoltage Protection

- Overcurrent/Short-Circuit Protection

- Undervoltage Protection

§ Zero Volt 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

§ System Power Management and Control

Feature Support

§ 32 Bytes of Lockable EEPROM

§ 16 Bytes of General-Purpose SRAM

§ Dallas 1-Wire

Device Address

§ Low Power Consumption:

- Active Current:

60

mA typ, 90mA max

- Sleep Current:

1

mA typ, 2mA max

PIN CONFIGURATION

PIN DESCRIPTION

DQ - Data Input/Output

PIO - Programmable I/O Pin

PLS - Battery Pack Positive Terminal Input

PS

- Power Switch Sense Input

SNS - Sense Resistor Connection

IS1 - Current-Sense Input

IS2 - Current-Sense Input

SNS Probe

- Do Not Connect

- Do Not Connect

DS2761

High-Precision Li+ Battery Monitor

www.maxim-ic.com

CC

PIO

PS

IS1

DS2761

16-Pin TSSOP Package

IS2

SNS

SNS

1

2

23

2

1

4

5

6

7

8

16

15

14

13

12

11

10

9

SNS

DQ

PLS

DC

1-Wire is a registered trademark of Dallas Semiconductor.

DS2761

Flip-Chip Packaging*

Top View

PLS DC

DQ

CC

IS2

VIN

IS1

VDD PIO

PS

SNS

VSS

1

2

3

4

A

B

C

D

E

F

SNS

Probe

VSS

Probe

* Mechanical drawing for the 16-pin TSSOP and DS2761 flip-chip package can be found at:

http://pdfserv.maxim-ic.com/arpdf/Packages/16tssop.pdf

http://pdfserv.maxim-ic.com/arpdf/Packages/chips/2761x.pdf