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Data Sheet

FULL DATA SHEET (PDF, 296kB) Download   E-Mail

Description

The DS2760 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 data storage, and Li+ protection into the small footprint of either a TSSOP package or flip chip. The DS2760 is a key component in applications including remaining capacity estimation, safety monitoring, and battery-specific data storage. Via its 1-Wire® interface, the DS2760 gives the host system read/write access to status and control registers, instrumentation registers, and general purpose data storage. Each device has a unique factory-programmed 64-bit net address which allows it to be individually addressed by the host system, supporting multi-battery operation. The DS2760 is capable of performing temperature, voltage and current measurement to a resolution sufficient to support process monitoring applications such as battery charge control, remaining capacity estimation, and safety monitoring. Temperature is measured using an on-chip sensor, eliminating the need for a separate thermistor. Bidirectional current measurement and accumulation are accomplished using either an internal 25mΩ sense resistor or an external device. The DS2760 also features a programmable I/O pin that allows the host system to sense and control other electronics in the pack, including switches, vibration motors, speakers and LEDs. Three types of memory are provided on the DS2760 for battery information storage: EEPROM, lockable EEPROM and SRAM. EEPROM memory saves important battery data in true nonvolatile memory that is unaffected by severe battery depletion, accidental shorts or ESD events. Lockable EEPROM becomes ROM when locked to provide additional security for unchanging battery data. SRAM provides inexpensive storage for temporary data.

Key Features		Applications/Uses
Li+ safety circuit Overvoltage protection Overcurrent/short circuit protection Undervoltage protection Zero Volt 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: 90µA max Sleep current: 2µA max		Cell Phones Digital Still Cameras Palmtops, Handy Terminals (incl. barcode) Pen Entry Palmtops, PDAs and Organizers Smart Battery Packs/Chargers

Application Notes

Application Note 27: Understanding and Using Cyclic Redundancy Checks with Maxim iButton Products - DS2760 Application Note 121: Inaccuracies of Estimating Remaining Cell Capacity with Voltage Measurements Alone - DS2760 Application Note 126: 1-Wire Communication Through Software - DS2760 Application Note 128: Testing and Calibrating a DS2760 Li-Ion Battery Monitor and Protector Based Circuit - DS2760 Application Note 131: Lithium-Ion Cell Fuel Gauging with Maxim Battery Monitor ICs - DS2760 Application Note 138: Using the DS2760 or DS2761 Battery Monitor in Multiple-Cell Applications - DS2760 Application Note 143: Multiple Battery Pack Applications Using the DS2760 or DS2761 - DS2760 Application Note 148: Guidelines for Reliable 1-Wire Networks - DS2760 Application Note 158: 1-Wire Tagging with XML - DS2760 Application Note 159: Ultra-Reliable 1-Wire Communications - DS2760 Application Note 165: Interfacing the DS2760 1-Wire High-Precision Li-Ion Battery Monitor and Protection IC in a Microcontroller Environment - DS2760 Application Note 187: 1-Wire Search Algorithm - DS2760 Application Note 192: Using the DS2480B Serial 1-Wire Line Driver - DS2760 Application Note 197: Sense Resistor Power Dissipation - DS2760 Application Note 214: Using a UART to Implement a 1-Wire Bus Master - DS2760 Application Note 221: DS276x Product Comparison - DS2760 Application Note 224: Calibrating the Offset Register of the DS2761 - DS2760 Application Note 231: Compensating for Sense Resistor Self Heating - DS2760 Application Note 1100: White Paper 5: Using 1-Wire APIs for Data Sheet Commands - DS2760 Application Note 1919: Increasing the Fuel Gauge Dynamic Range - DS2760 Application Note 2416: DS27xx Fuel Gauge Board Layout Techniques to Minimize Measurement Error - DS2760 Application Note 2420: 1-Wire Communication with a Microchip PICmicro Microcontroller - DS2760 Application Note 3225: Waking up a DS2761/DS2762 - DS2760 Application Note 3377: Maxim Wafer-Level Package Assembly Guide - DS2760 Application Note 3599: Assembling High-Lead (Pb) DS2761 Flip-Chips in a Pb-Free Assembly Flow - DS2760 Application Note 4002: Understanding Flip-Chip and Chip-Scale Package Technologies and Their Applications - DS2760

Evaluation Kits

DS2760K

Design Guides

BATTERY MANAGEMENT (PDF) 1-Wire® PRODUCTS (PDF)

Reliability Reports

Reliability Report: DS2760.pdf

Software/Models

none

Ordering Information
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. More: SeeFull Data Sheet or Part 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.
Devices: 1-16 of 16
DS2760	Notes	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2760BX-025/T&R				FCHIP;12 pin;7 mm² Dwg: 56-G7003-002 Use pkgcode/variation: BF1223-1*	-40°C to +85°C	See data sheet
DS2760AX/T&R				FCHIP;12 pin;7 mm² Dwg: 56-G7003-002 Use pkgcode/variation: BF1223-1*	-40°C to +85°C	See data sheet
DS2760AX-025/T&R				FCHIP;12 pin;7 mm² Dwg: 56-G7003-002 Use pkgcode/variation: BF1223-1*	-40°C to +85°C	See data sheet
DS2760BE+T&R				TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2760BE+				TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2760AE-025+				TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2760AE+				TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2760BE+025/T&R				TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2760BE+025				TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2760AE	4.275V OV			TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2760BE-025/T&R				TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2760BE-025	4.35V OV/Internal Sense Resistor			TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2760BE	4.35V OV			TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2760AE-025/T&R				TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2760AE-025	4.275V OV/Internal Sense Resistor			TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2760AE-025+T&R				TSSOP;16 pin;33 mm² Dwg: 56-G2019-000A (PDF) Use pkgcode/variation: U16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

More Information

New Product Press Release 2001-05-14

Related Products

DS2760K Li+ Battery Monitor Evaluation Kit

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