Maxim > Products > Power and Battery Management > DS2762

DS2762

High-Precision Li+ Battery Monitor with Alerts

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

Overview

Technical Documents

Ordering Info

Status

Part Number	Status
DS2762	Active: In Production. See Ordering Information for details.

Description

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.

Data Sheet

Download	Rev 2	(PDF, 268kB)
E-Mail

An evaluation kit is available: DS2762K

NOTE: This product uses the following:
DS2762K Evaluation Kit Software

Key Features

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

Applications/Uses

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

V_SUPPLY
(V)

Package/Pins

Smallest Available Pckg.
(mm²)

Oper. Temp.
(°C)

Budgetary Price

min

max

max w/pins

See Notes

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

$2.48 @1k

See All Battery Protectors, Selectors and Monitors (29)

Pricing 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

Pin Configurations

Application Notes

Application Note 121		Inaccuracies of Estimating Remaining Cell Capacity with Voltage Measurements Alone
Application Note 126		1-Wire® Communication Through Software
Application Note 131		Lithium-Ion Cell Fuel Gauging with Maxim Battery Monitor ICs
Tutorial 148		Guidelines for Reliable Long Line 1-Wire® Networks
Application Note 187		1-Wire Search Algorithm
Application Note 192		Using the DS2480B Serial 1-Wire® Line Driver
Application Note 197		Sense Resistor Power Dissipation
Tutorial 214		Using a UART to Implement a 1-Wire Bus Master
Application Note 221		DS276x Product Comparison
Application Note 224		Calibrating the Offset Register of the DS2761
Application Note 231		Compensating for Sense Resistor Self Heating
Application Note 1919		Increasing the Fuel Gauge Dynamic Range
Application Note 2416		DS27xx Fuel Gauge Board Layout Techniques to Minimize Measurement Error
Application Note 2420		1-Wire® Communication with a Microchip PICmicro Microcontroller
Application Note 3065		Powering up a DS2762
Application Note 3225		Waking up a DS2761/DS2762
Application Note 3377		Maxim Wafer-Level Package Assembly Guide
Application Note 3407		Upgrading to the DS2762 from the DS2761
Application Note 4002		Understanding Flip-Chip and Chip-Scale Package Technologies and Their Applications

Reliability Reports

Reliability Report:

DS2762.pdf

Software/Models

DS2762K Evaluation Kit Software

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2762AE			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2762AE+			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2762AE+025			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16+1F*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2762AE+025/T&R			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16+1F*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2762AE+T&R			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2762AE-025			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16-1F*	-40°C to +85°C	See data sheet
DS2762AE-025/T&R			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16-1F*	-40°C to +85°C	See data sheet
DS2762AE/T&R			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2762AX-025/T&R			Active	FCHIP;12 pin;7 mm² Outline Drawing:21-0281 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: BF1233-1*	-40°C to +85°C	RoHS/Lead-Free: RoHS Qualified Materials Analysis
DS2762AX/T&R			Active	FCHIP;12 pin;7 mm² Outline Drawing:21-0281 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: BF1233-1*	-40°C to +85°C	RoHS/Lead-Free: RoHS Qualified Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2762BE			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2762BE+			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2762BE+025			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16+1F*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2762BE+025/T&R			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16+1F*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2762BE+T&R			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2762BE-025			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16-1F*	-40°C to +85°C	See data sheet
DS2762BE-025/T&R			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16-1F*	-40°C to +85°C	See data sheet
DS2762BE/T&R			Active	TSSOP;16 pin;33.4 mm² Outline Drawing:21-0066 (PDF) Land Pattern: 90-0117 (PDF) Use pkgcode/variation: U16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2762BX-025-C01		N/A	No Longer Available	FCHIP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS2762BX-025/T&R			Active	FCHIP;12 pin;7 mm² Outline Drawing:21-0281 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: BF1233-1*	-40°C to +85°C	RoHS/Lead-Free: RoHS Qualified Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2762BX-C01/T&R		N/A	No Longer Available	FCHIP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS2762BX/T&R			Active	FCHIP;12 pin;7 mm² Outline Drawing:21-0281 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: BF1233-1*	-40°C to +85°C	RoHS/Lead-Free: RoHS Qualified Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Notes and Comments

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.

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Evaluation Kits

DS2762K

Li+ Battery Monitor Evaluation Kit

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