DS2784

Stand-Alone Fuel Gauge IC, TDFN-14, 64-Bit, 32-Byte Parameter EEPROM, -0.3V to +18V

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Price:: US $0.10~1.00 / piece [Get Latest Price]

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PartNumber:: DS2784

Brand:: Dallas Semiconductor - Maxim | Pack: TDFN | D/C: 10+

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Products Upload time: 2011-12-27

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Part Number:DS2784
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Product Summary

The DS2784 is a 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication. The DS2784 operates from 2.5V to 4.6V for integration in battery packs using a single lithium-ion (Li+) or Li+ polymer cell. Available capacity is reported in mAh and as a percentage. Safe operation is ensured with the included Li+ protection function and SHA-1-based challenge-response authentication. The applications of the DS2784 include: Smartphones/PDAs, Digital Still and Video Cameras, Cordless VOIP Phones, Portable GPS Navigation.

Parametrics

DS2784 absolute maximum ratings: (1)Voltage Range on PLS Pin Relative to VSS: -0.3V to +18V; (2)Voltage Range on CP Pin Relative to VSS: -0.3V to +12V; (3)Voltage Range on DC Pin Relative to VSS: -0.3V to (CP + 0.3V); (4)Voltage Range on CC Pin Relative to VSS: VDD - 0.3V to CP + 0.3V; (5)Voltage Range on All Other Pins Relative to VSS: -0.3V to +6.0V; (6)Maximum Voltage Range on VIN Pin Relative to VDD: VDD + 0.3V; (7)Continuous Sink Current, PIO, DQ: 20mA; (8)Continuous Sink Current, CC, DC: 10mA; (9)Operating Temperature Range: -40℃ to +85℃; (10)Storage Temperature Range: -55℃ to +125℃.

Features

DS2784 features: (1)Precision Voltage, Temperature, and Current Measurement System; (2)Available Capacity Estimated from Coulomb Count, Discharge Rate, Temperature, and Cell Characteristics; (3)Estimates Cell Aging Using Learn Cycles; (4)Uses Low-Cost Sense Resistor; (5)Allows for Calibration of Gain and Temperature Coefficient; (6)Li+ Safety Circuitry—Overvoltage, Undervoltage, Overcurrent, Short-Circuit Protection; (7)Programmable Safety Thresholds for Overvoltage and Overcurrent; (8)Authentication Using SHA-1 Algorithm and 64-Bit Secret; (9)32-Byte Parameter EEPROM; (10)16-Byte User EEPROM.