1 Features

1• Fully Integrated 1-Series, 2-Series, 3-Series, and

4-Series Li-Ion or Li-Polymer Cell Battery Pack

Manager and Protection

• Next-Generation Patented Impedance Track™

Technology Accurately Measures Available

Charge in Li-Ion and Li-Polymer Batteries

• High Side N-CH Protection FET Drive

• Integrated Cell Balancing While Charging or At

Rest

• Full Array of Programmable Protection Features

– Voltage

– Current

– Temperature

– Charge Timeout

– CHG/DSG FETs

– AFE

• Sophisticated Charge Algorithms

– JEITA

– Enhanced Charging

– Adaptive Charging

– Cell Balancing

• Supports TURBO BOOST Mode

• Supports Battery Trip Point (BTP)

• Diagnostic Lifetime Data Monitor and Black Box

Recorder

• LED Display

• Supports Two-Wire SMBus v1.1 Interface

• SHA-1 Authentication

• Compact Package: 32-Lead QFN (RSM)

2 Applications

• Notebook/Netbook PCs

• Medical and Test Equipment

• Portable Instrumentation

3 Description

The bq40z50-R1 device, incorporating patented

Impedance Track™ technology, is a fully integrated,

single-chip, pack-based solution that provides a rich array of features for gas gauging, protection, and

authentication for 1-series, 2-series, 3-series, and 4-

series cell Li-Ion and Li-Polymer battery packs.

Using its integrated high-performance analog

peripherals, the bq40z50-R1 device measures and

maintains an accurate record of available capacity,

voltage, current, temperature, and other critical

parameters in Li-Ion or Li-Polymer batteries, and

reports this information to the system host controller

over an SMBus v1.1 compatible interface.