BQ27541-G1 (非推奨品)

パック側 Impedance Track 対応 バッテリー残量計、LDO 内蔵

パック側 Impedance Track 対応 バッテリー残量計、LDO 内蔵 - BQ27541-G1

NRND: この製品は新規設計へのご使用を推奨しません 。しかし、デバイス、ツール、またはソフトウェアは、 これまでにご購入されたお客様をサポートするために引き続き提供しております。TI では、この製品を新規設計に使用することはお勧めしません。新規設計には他の製品で代替することをお勧めします。

代替製品 BQ27542-G1– このデバイスは類似の機能を備えていますが、同等の機能ではありません。

TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.


The Texas Instruments bq27541-G1 Li-ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-ion battery packs. The device requires little system microcontroller firmware development for accurate battery fuel gauging. The fuel gauge resides within the battery pack or on the main board of the system with an embedded battery (nonremovable).

The fuel gauge uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), run-time to empty (minimum), battery voltage (mV), and temperature (°C). It also provides detections for internal short or tab disconnection events.

The fuel gauge also features integrated support for secure battery pack authentication, using the SHA-1/HMAC authentication algorithm.


  • Battery Fuel Gauge for 1-Series (1sXp) Li-Ion Applications
    up to 14,500-mAh Capacity
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging Supports up to
      14,500 mAh
    • Internal or External Temperature Sensor for Battery
      Temperature Reporting
    • SHA-1/HMAC Authentication
    • Lifetime Data Logging
    • 64 Bytes of Non-Volatile Scratch Pad FLASH
  • Battery Fuel Gauging Based on Patented Impedance Track
    • Models Battery Discharge Curve for Accurate
      Time-To-Empty Predictions
    • Automatically Adjusts for Battery Aging, Battery
      Self-Discharge, and Temperature/Rate Inefficiencies
    • Low-Value Sense Resistor (5 mΩ to 20 mΩ)
  • Advanced Fuel Gauging Features
    • Internal Short Detection
    • Tab Disconnection Detection
  • HDQ and I2C Interface Formats for Communication
    With Host System
  • Small 12-pin 2,5 mm × 4 mm SON Package