Texas Instruments BQ27620YZFR-G1

Description
The Texas Instruments bq27620-G1 system-side is an easy-to-configure microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs. The device requires minimal user configuration and system microcontroller firmware development.
The bq27620-G1 uses the patented ImpedanceTrack™ algorithm with Dynamic Voltage Correlation for fuel gauging. This patented process eliminates the need for a sense resistor when calculating remaining battery capacity (mAh), state-of-charge (%), run-time to empty (min), battery voltage (mV), temperature (°C), and state of health (%).
Battery fuel gauging with the bq27620-G1 requires connections only to PACK (P ), PACK- (P-), and Thermistor (T) connections to a removable battery pack or embedded battery circuit. The CSP option is a 15-ball package in the nominal dimensions of 2610 x 1956 μm with a 0.5 mm lead pitch. It is ideal for space-constrained applications.

Features
Battery Fuel Gauge for 1-Series Li-Ion applications based on Patented ImpedanceTrack™ Technology with Dynamic Voltage Correlation (IT-DVC)
Resides on System Main Board
No Sense Resistor Required
Powered directly from battery with integrated LDO
Supports embedded or removable Battery Packs
System Side Fuel-Gauge Provides:
Accurate Battery Fuel Gauging; models the Battery Discharge Curve for Accurate Time-to-Empty Predictions
Automatically Adjusts for Battery Aging, Battery Self-Discharge, and Temperature/Rate Inefficiencies
Internal Temperature Sensor for Battery Temperature Reporting
Battery Low Interrupt Warning
Battery Insertion Indicator
Configurable Level of State of Charge (SOC) Interrupts
State of Health Indicator
32 Bytes of Non-Volatile Scratch-Pad FLASH
400-kHz 12C™ Interface for Connection to System Microcontroller Port
In a 15-Pin NanoFree™ (CSP) Packaging

Applications
Smartphones
Digital Still and Video Cameras
Handheld Terminals
MP3 or Multimedia Players