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Single Cell Impedance Track Pack Side Fuel Gauge

Availability: 250


Package | PIN: DSBGA (YZF) | 15
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $2.68
10-24 $2.42
25-99 $2.25
100-249 $1.97
250-499 $1.85
500-749 $1.57
750-999 $1.32
1,000+ $1.27


  • Battery Fuel Gauge for 1-Series (1sXp) Li-Ion Applications up to 14,500-mAh Capacity
  • Microcontroller Peripheral Provides:
    • Internal or External Temperature Sensor for Battery TemperatureReporting
    • SHA-1/HMAC Authentication
    • Lifetime Data Logging
    • 64 Bytes of Non-Volatile Scratch Pad FLASH
  • Battery Fuel Gauging Based on Patented Impedance Track™ Technology
    • Models Battery Discharge Curve for Accurate Time-To-EmptyPredictions
    • Automatically Adjusts for Battery Aging, Battery Self-Discharge, andTemperature/Rate Inefficiencies
    • Low-Value Sense Resistor (5 mΩ to 20 mΩ)
  • Advanced Fuel Gauging Features
    • Internal Short Detection
    • Tab DisconnectionDetection
  • HDQ and I2C™ Interface Formats for Communication with Host System
  • Small 15-Ball Nano-Free™ (DSBGA) Packaging

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Texas Instruments  BQ27546YZFT-G1

The bq27546-G1 Li-Ion battery fuel gauge is a microcontrollerperipheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requiresminimal system microcontroller firmware development for accurate battery fuel gauging. Thebq27546-G1 resides within the battery pack or on the system’s main-board with anembedded battery (non-removable).

The bq27546-G1 uses the patented ImpedanceTrack™ algorithm for fuel gauging, and provides information such as remaining batterycapacity (mAh), state-of-charge (%), run-time to empty (min.), battery voltage (mV), andtemperature (°C). It also provides detections for internal short or tab disconnectionevents.

The bq27546-G1 features integrated support for secure battery packauthentication, using the SHA-1/HMAC authentication algorithm.

The device comes in a 15-ball Nano-Free™ DSBGA package(2.61 mm × 1.96 mm) that is ideal for space-constrainedapplications.