Specification	BQ27741YZFR-G1

Battery Chemistry	Lithium Ion
Fault Protection	Over Temperature, Over/Under Voltage, Short Circuit, Over Current
Function	Multi-Function Controller
Interface	HDQ, I2C
Mounting Type	Surface Mount
Number of Cells	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	DSBGA, 15-UFBGA
Supplier Device Package	15-DSBGA
Supplier Device Package [x]	2.78
Supplier Device Package [y]	1.96

BQ27741-G1 Series

Pack-side Impedance Track™(tm) fuel (gas) gauge with integrated protector

Part	Fault Protection	Supplier Device Package [x]	Supplier Device Package	Supplier Device Package [y]	Battery Chemistry	Number of Cells	Function	Interface	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Package / Case
Texas Instruments BQ27741YZFR-G1	Over Current Over Temperature Over/Under Voltage Short Circuit	2.78	15-DSBGA	1.96	Lithium Ion	1	Multi-Function Controller	HDQ I2C	85 °C	-40 °C	Surface Mount	15-UFBGA DSBGA
Texas Instruments BQ27741YZFT-G1	Over Current Over Temperature Over/Under Voltage Short Circuit		15-DSBGA		Lithium Ion	1	Multi-Function Controller	HDQ I2C	85 °C	-40 °C	Surface Mount	15-UFBGA DSBGA

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	3000	$ 3.49
Texas Instruments	LARGE T&R	1	$ 5.36
		100	$ 4.37
		250	$ 3.43
		1000	$ 2.91

Description

General part information

BQ27741-G1 Series

The Texas Instruments bq27741-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 system’s main board with an embedded battery (non-removable). The fuel gauge provides hardware-based over- and undervoltage, overcurrent in charge or discharge, and short-circuit protections.

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), as well as recording vital parameters throughout the lifetime of the battery.

The device comes in a 15-ball BGA package (2.776 mm × 1.96 mm) that is ideal for space-constrained applications.