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DS2756E+TR Datasheet(PDF) 1 Page - Maxim Integrated Products |
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DS2756E+TR Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 27 page 19-4633; 5/09 DS2756 High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode 1 of 27 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. www.maxim-ic.com GENERAL DESCRIPTION The DS2756 high-precision battery fuel gauge is a data-acquisition and information-storage device tailored for cost-sensitive and space-constrained 1- cell Li+/polymer battery-pack applications. The DS2756 provides the key hardware components required to accurately estimate remaining capacity by integrating low-power, precision measurements of temperature, voltage, current, and current accumulation, as well as nonvolatile (NV) data storage, into the small footprint of a 3.0mm x 4.4mm 8-pin TSSOP package. Through its 1-Wire interface, the DS2756 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 that allows it to be individually addressed by the host system, supporting multibattery operation. TYPICAL OPERATING CIRCUIT FEATURES Programmable Suspend Mode Accurate Current Accumulation - 2% ±4 V over ±64mV Input Range - 2% ±200 A over ±3.2A with 20m Sense Current Measurement - 9-Bit Snapshot Measurement - 12-Bit Average Updated Every 88ms - 15-Bit Average Updated Every 2.8s Voltage Measurement - 9-Bit Snapshot Measurement - 10-Bit Average Updated Every 4ms Temperature Measurement - 10-Bit with 0.125 C Resolution Snapshot Mode Allows Instantaneous Power Measurement Host Alerted When Accumulated Current or Temperature Exceeds Programmable Limits 96 Bytes of Lockable EEPROM 8 Bytes of General-Purpose SRAM Dallas 1-Wire Interface with Unique 64-Bit Address and Standard or Overdrive Timing 3mm Dimension of 8-Pin TSSOP Package Allows Mounting on Side of Thin Prismatic Li+ and Li+/Polymer Cells ORDERING INFORMATION PART TEMP RANGE PIN-PACKAGE DS2756E+ -20°C to +70°C 8 TSSOP DS2756E+T&R -20°C to +70°C DS2756E+ on Tape-and-Reel + Denotes lead(Pb)-free/RoHS-compliant package. PIN CONFIGURATION VIN DQ SNS IS2 PIO 1 2 2 1 8 7 6 5 VSS 2 3 VDD 4 IS1 DS2756E TSSOP Package 1-Wire is a registered trademark of Maxim Integrated Products, Inc. |
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