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BQ27501DRZR Datasheet(PDF) 1 Page - Texas Instruments |
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BQ27501DRZR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 39 page www.ti.com 1 INTRODUCTION 1.1 FEATURES 1.2 APPLICATIONS 1.3 DESCRIPTION HostSystem SingleCellLi-Ion BatteryPack PACK- PROTECTION IC CHG DSG Temp Sense Battery Good Current Sense I2C T LDO PACK+ Voltage Sense Battery Low Warning FETs bq27500/1 RID RID Sense* *bq27501Only Power Management Controller bq27500 bq27501 System-Side Impedance Track™ Fuel Gauge SLUS785 – SEPTEMBER 2007 • Battery Fuel Gauge for 1-Series Li-Ion • Smartphones Applications • PDAs • Resides on System Main Board • Digital Still and Video Cameras – Works with Embedded or Removable • Handheld Terminals Battery Packs • MP3 or Multimedia Players • Two Varieties – bq27500: Uses PACK+, PACK-, and T Battery Terminals – bq27501: Includes Battery Pack ID Resistor (RID) Terminal The Texas Instruments bq27500/01 System-Side Li-Ion Battery Fuel Gauge is a micro-controller • Micro-Controller Peripheral Provides: peripheral that provides fuel gauging for single cell – Accurate Battery Fuel Gauging Li-Ion battery packs. The device requires little system – Internal Temperature Sensor for System micro-controller firmware development. The Temperature Reporting bq27500/01 resides on the system’s main board, and – Battery Low Interrupt Warning manages an embedded battery (non-removable) or a – Battery Insertion Indicator removable battery pack. – Battery ID Detection – 96 bytes of Non-Volatile Scratch Pad The bq27500/01 uses the patented Impedance FLASH Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity • Battery Fuel Gauge Based on Patented (mAh), state-of-charge (%), run-time to empty (min.), Impedance Track™ Technology battery voltage (mV), and temperature ( °C). – Models the Battery Discharge Curve for Accurate Time-to-Empty Predictions Battery fuel gauging with the bq27500 requires only – Automatically Adjusts for Battery Aging, PACK+ (P+), PACK- (P-), and Thermistor (T) Battery Self Discharge, and connections to a removable battery pack or Temperature/Rate Inefficiencies embedded battery circuit. The bq27501 works with – Low Value Sense Resistor (10m Ω or Less) identification resistors in battery packs, to gauge • I2C™ Interface for Connection to System batteries of different fundamental chemistries and/or Micro-Controller Port significantly different rated capacities. • 12-Pin 2,5 mm × 4,0 mm SON Package TYPICAL APPLICATION Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this document. Impedance Track is a trademark of Texas Instruments. I2C is a trademark of Philips Electronics. UNLESS OTHERWISE NOTED this document contains Copyright © 2007, Texas Instruments Incorporated PRODUCTION DATA information current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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