BQ27441DRZR-G1A Texas Instruments 电池管理 System-Side Impdance Trck Bttry Fuel Gge

1 Features 2 Applications

1• Single Series Cell Li-Ion Battery Fuel Gauge • Smartphones, Feature Phones, and Tablets

– Resides on System Board • Digital Still and Video Cameras

– Supports Embedded or Removable Batteries • Handheld Terminals

– Powered Directly from Battery with Integrated • MP3 or Multimedia Players

LDO

– Supports a Low-Value External Sense Resistor 3 Description

(10 mΩ) The Texas Instruments bq27441-G1 fuel gauge is a

microcontroller peripheral that provides system-side

• Battery Fuel Gauging Based on Patented fuel gauging for single-cell Li-Ion batteries. The Impedance Track™ Technology device requires minimal user configuration and

– Reports Remaining Capacity and State-of- system microcontroller firmware development.

Charge (SOC) with Smoothing Filter The bq27441-G1 battery fuel gauge uses the

– Automatically Adjusts for Battery Aging, Self- patented Impedance Track™ algorithm for fuel

discharge, Temperature, and Rate Changes gauging, and provides information such as remaining

– Battery State-of-Health (Aging) Estimation battery capacity (mAh), state-of-charge (%), and

battery voltage (mV). • Microcontroller Peripheral Supports:

– 400-kHz I

2C Serial Interface Battery fuel gauging with the bq27441-G1 fuel gauge

requires connections only to PACK+ (P+) and PACK–

– Configurable SOC Interrupt or (P–) for a removable battery pack or embedded Battery Low Digital Output Warning battery circuit. The tiny, 12-pin, 2.50 mm × 4.00 mm,

– Internal Temperature Sensor or small outline no-lead (SON) package is ideal for

Host-Reported Temperature space-constrained applications.