深圳市中立信电子科技有限公司

LC709203FQH-04TWG

电池管理 FUEL GAUGE

Smart LiB Gauge  Battery Fuel Gauge LSI  For 1‐Cell Lithium‐ion/  Polymer (Li+)

Overview

LC709203FQH-04TWG is a Fuel Gauge for a single lithium ion/polymer  battery. It is part of our Smart LiB Gauge family of Fuel Gauges  which measure the battery RSOC (Relative State Of Charge) using its  unique algorithm called HG−CVR. The HG−CVR algorithm  eliminates the use of a sense resistor and provides accurate RSOC  information even under unstable conditions (e.g. changes of battery;  temperature, loading, aging and self-discharge). An accurate RSOC  contributes to the operating time of portable devices.

LC709203F is available in two small packages realizing the industries smallest PCB footprint for the complete solution. It has minimal parameters to be set by the user enabling simple, quick setup and operation.

LC709203FQH-04TWG Features

• HG−CVR Algorithm Technology

♦ No External Sense Resistor

♦ 2.8% Accuracy of RSOC

♦ Accurate RSOC of Aging Battery

♦ Automatic Convergence of Error

♦ Adjustment for the Parasitic Impedance around the Battery

♦ Simple and Quick Setup

• Low Power Consumption

♦ 3 A Operational Mode

• Precision Voltage Measurement

♦ ±7.5 mV

• Precision Timer

♦ ±3.5%

• Alerts for Low RSOC and/or Low Voltage

• Temperature Compensation

♦ Sense Thermistor Input

♦ Via I2C

• Detect Battery Insertion

• I2C Interface (up to 400 kHz Supported)

• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant

LC709203FQH-04TWG Applications

• Wireless Handsets

• Smartphones/PDA Devices

• MP3 Players

• Digital Cameras

• Portable Game Players

• USB-related Devices