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ISL6295 Datasheet(PDF) 1 Page - Intersil Corporation |
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ISL6295 Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 25 page 1 ® FN9074.0 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL6295 Low Voltage Fuel Gauge The ISL6295 is a cost-effective, highly accurate IC that measures, stores, and reports all of the critical parameters required for rechargeable battery monitoring with a minimum of external components. It precisely measures charge/ discharge current as well as voltage and temperature of a battery pack. In addition, the ISL6295 accurately accumulates both charge and discharge current as independent parameters. Temperature history can also be maintained for calculating self-discharge effects. The ISL6295 integrates a highly accurate 16-bit (15-bit plus sign) integrating A/D converter that performs calibrated current measurement to within ±0.5% error. On-chip counters precisely track battery charge/discharge and temperature history. Also included are an on-chip voltage regulation circuit, non-crystal time base, and on-chip temperature sensor. The operating voltage range of the ISL6295 is optimized to allow a direct interface to a single cell Li-Ion/Li-Poly pack. 256 bytes of general-purpose nonvolatile EEPROM storage are provided to store factory programmed, measured, and user defined parameters. Efficient communication is provided through an industry standard SMBus/I2C™ compatible 2-wire communications interface. This interface allows the host to determine accurate battery status for effective system power management and for communication to the end user. A battery management solution utilizing the ISL6295 delivers both space and total system component cost savings for a wide variety of battery operated applications. Features • Measures, maintains, and reports all critical rechargeable battery parameters with high accuracy • Supports Lithium Ion and Lithium Polymer battery packs • Current measurement with 16-bit (15-bit plus sign) integrating A/D accurate to less than ±0.5% error • Calibrated temperature measurement accurate to within ±3°C absolute using on-chip temp sensor or external thermistor • Accumulation of charge current, discharge current, temperature, and voltage in independent 32-bit registers • 256-byte nonvolatile EEPROM stores factory programmed, measured, and user-defined parameters • In-system offset calibration compensates for offset error in current measurement • Industry standard SMBus/I2C™ compatible 2-wire communications interface - SMBus V1.1 with PEC/CRC-8 communication • -20°C to +85°C operating temperature range • NTC pin can be configured as a thermistor input or GPIO • GPAD pin can be configured as an independent A/D input or GPIO • Flexible power operating modes allow low-power monitoring of battery conditions during system full operating and standby conditions: - Run: Continuous Conversion; 85µA typ. - Sample: Sample interval from 0.5-64s @ 45µA typ. - Sample-Sleep: Sample interval from 0.5-138s min. @ 20µA typ. • Shelf-Sleep mode reduces power consumption to pack storage conditions to 300nA typ., with automatic wake-up upon pack insertion. Applications • Notebook PC, PDAs, Hand Held Devices Pinout ISL6295 (TSSOP) TOP VIEW Ordering Information PART NUMBER PART MARKING TEMP RANGE (°C) PACKAGE PKG. DWG. # ISL6295CV 6295CV -20°C to 85 8 Ld TSSOP M8.173 ISL6295CV-T 6295CV -20°C to 85 8 Ld TSSOP M8.173 1 2 3 45 6 7 8 GPAD/IO1 VP SCL SDA SR GND NTC/IO0 ROSC Data Sheet October 25, 2005 |
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