DS2762 High-Precision Li+ Battery Monitor with Alerts

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1-Wire Battery Monitor Integrates Single-Cell Protector and Alerts System when Current or Temperature Exceeds User-Defined Limits

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Description

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The DS2762 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 DS2762 is a key component in applications including remaining capacity estimation, safety monitoring, and battery-specific data storage.

NOTE: This product requires use of the following:

DS2762K Evaluation Kit Software

Key Features

Applications/Uses

Li+ Safety Circuit
- Overvoltage Protection
- Overcurrent/Short-Circuit Protection
- Undervoltage Protection
Host Alerted When Accumulated Current or Temperature Exceeds User-Selectable Limits
0V Battery Recovery Charge
Available in Two Configurations:
- Internal 25mΩ 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: 15.625µV LSB and ±64mV Dynamic Range
Current Accumulation:
- Internal Sense Resistor: 0.25mAhr LSB
- External Sense Resistor: 6.25µVhr 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® Interface with Unique 64-Bit Device Address
Low-Power Consumption:
- Active Current: 60µA typ, 90µA max
- Sleep Current: 1µA typ, 2µA max

	Cell Phones/Smartphones
	Digital Cameras
	PDAs

Key Specifications: Battery Protectors, Selectors and Monitors

Part Number

Functions

Battery Type

Interface

User Data Storage (bytes)

Parameters Measured

Battery Protection

Supply Voltage (min) (V)

Supply Voltage (max) (V)

Package

Operating Temp. Range (°C)

Price^**

DS2762

•	Fuel Gauge

•

Protector

•	Status Monitor

1 Cell Li-Ion

1-Wire

16 SRAM
32 EEPROM

Current
Temperature
Voltage

Over-Current
Over/Under Voltage

2.5

5.5

FCHIP/12
TSSOP/16

-40 to +85

$2.55 @ 1k

See All Battery Protectors, Selectors and Monitors (21)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

DS2762: Pin Configurations
Pin Configurations

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2006-01-09
This page last modified: 2008-03-07