BQ27441DRZT-G1B

The Texas Instruments bq27441-G1 fuel gauge is a microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires minimal user configuration and system microcontroller firmware development.

The bq27441-G1 battery fuel gauge uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV).

Battery fuel gauging with the bq27441-G1 fuel gauge requires connections only to PACK+ (P+) and PACK(P-) for a removable battery pack or embedded battery circuit. The tiny, 12-pin, 2.50 mm × 4.00 mm, small outline no-lead (SON) package is ideal for space-constrained applications.

• 1 · Single Series Cell Li-Ion Battery Fuel Gauge
• -Resides on System Board
• -Supports Embedded or Removable Batteries
• -Powered Directly from Battery with Integrated LDO
• -Supports a Low-Value External Sense Resistor (10 m Ω )
• Battery Fuel Gauging Based on Patented Impedance Track™ Technology
• -Reports Remaining Capacity and State-ofCharge (SOC) with Smoothing Filter
• -Automatically Adjusts for Battery Aging, Selfdischarge, Temperature, and Rate Changes
• -Battery State-of-Health (Aging) Estimation
• Microcontroller Peripheral Supports:
• -400-kHz I 2 C Serial Interface
• -Configurable SOC Interrupt or Battery Low Digital Output Warning
• -Internal Temperature Sensor or Host-Reported Temperature

• Smartphones, Feature Phones, and Tablets
• Digital Still and Video Cameras
• Handheld Terminals
• MP3 or Multimedia Players

TA = -40°C to 85°C, typical values at TA = 30°C and VREGIN = 3.6 V (unless otherwise noted)(Force Note1)

(1)

over operating free-air temperature range (unless otherwise noted) (1)

TA = 30°C and VREGIN = VBAT = 3.6 V (unless otherwise noted)

The bq27441-G1 fuel gauge is a microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires minimal configuration and uses One Time Programmable (OTP) NonVolatile Memory (NVM). Battery fuel gauging with the fuel gauge requires connections only to PACK+ and PACK- for a removable battery pack or embedded battery circuit. To allow for optimal performance in the end application, special considerations must be taken to ensure minimization of measurement error through proper printed circuit board (PCB) board layout. Such requirements are detailed in Design Requirements .