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BQ27501 Datasheet(PDF) 1 Page - Texas Instruments |
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BQ27501 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 39 page 1 INTRODUCTION 1.1 FEATURES 1.2 APPLICATIONS 1.3 DESCRIPTION HostSystem Power Management Controller I C 2 LDO Battery Low Warning bq27500/1 Battery Good Voltage Sense RID Sense* Temp Sense Current Sense PACK– PACK+ T Single-CellLi-Ion BatteryPack FETs CHG DSG Protection IC *bq27501Only RID bq27500 bq27501 System-Side Impedance Track™ Fuel Gauge www.ti.com SLUS785D – SEPTEMBER 2007 – REVISED APRIL 2008 • 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: Works With Battery ID Resistor in Battery Pack The Texas Instruments bq27500/01 system-side Li-Ion battery fuel gauge is a microcontroller • Microcontroller 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 microcontroller firmware development. The Temperature Reporting bq27500/01 resides on the system 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. The bq27501 works with – Low-Value Sense Resistor (10 m Ω or Less) identification resistors in battery packs to gauge • I2C™ Interface for Connection to System batteries of different fundamental chemistries and/or Microcontroller Port significantly different rated capacities. • 12-Pin 2,5-mm × 4-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. PRODUCTION DATA information is current as of publication date. Copyright © 2007–2008, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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