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Battery Management Unit Impedance Track Fuel Gauge for bq2425x Charger


Package | PIN: YZF | 15
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $2.96
10-24 $2.67
25-99 $2.48
100-249 $2.18
250-499 $2.04
500-749 $1.73
750-999 $1.46
1000+ $1.40


  • Battery Fuel Gauge and Charger Controller for 1-
    Cell Li-Ion Applications up to 14,500-mAh
  • Resides on System Main Board
  • Battery Fuel Gauge Based on Patented
    Impedance Track™ Technology
    • Models the Battery Discharge Curve for
      Accurate Remaining Capacity Predictions
    • Automatically Adjusts for Battery Aging,
      Battery Self-Discharge, and Temperature and
      Rate Inefficiencies
    • Low-value Sense Resistor (5 to 20 mΩ)
  • Battery Charger Controller With Customizable
    Charge Profiles
    • Configurable Charge Voltage and Current
      Based on Temperature
    • Optional State-of-Health (SoH) and Multi-Level
      Based Charge Profiles
  • Host-free Autonomous Battery Management
    • Reduced Software Overhead Allows for Easy
      Portability Across Platforms and Shorter OEM
      Design Cycles
    • Higher Safety and Security
  • Runtime Improvements
    • Longer Battery Runtime Leveraging
      Impedance Track™ Technology
    • Tighter Accuracy Controls for Charger
    • Improved Recharge Thresholds
  • Intelligent Charging – Customized and Adaptive
    Charging Profiles
    • Charger Control Based on SoH
    • Temperature Level Charging (TLC)
  • Stand-alone Battery Charger Controller for
    bq2425x Single-Cell Switch-mode Battery Charger
  • 400-kHz I2C Interface for Connection to System
    Microcontroller Port

Texas Instruments  BQ27532YZFT-G1

The bq27532-G1 system-side, Li-Ion battery management unit is a microcontroller peripheral that provides Impedance Track™ fuel gauging and charging control for single-cell Li-Ion battery packs. The fuel gauge requires little system microcontroller firmware development. Together with bq2425x single-cell switch-mode charger, the fuel gauge manages an embedded battery (non-removable) or a removable battery pack.

The fuel gauge uses the patented Impedance Track algorithm for fuel gauging, and provides information, such as remaining battery capacity (mAh), state-of-charge (%), runtime-to-empty (minimum), battery voltage (mV), temperature (°C), and SoH (%).

Battery fuel gauging with the device requires only PACK+ (P+), PACK– (P–), and thermistor (T) connections to a removable battery pack or embedded battery circuit. The 15-pin NanoFree™ (CSP) package has dimensions of 2.61 mm × 1.96 mm with 0.5-mm lead pitch. It is ideal for space-constrained applications.