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BQ25122EVM

700nA Low Iq Highly Integrated Battery Charge Management Evaluation Module for Wearables & Hearables

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BQ25122EVM

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Overview

The bq25122EVM evaluation module is a highly integrated battery charge management IC that integrates the most common functions for wearables devices: Linear charger, regulated output, load switch, manual reset with timer, and battery voltage monitor. The low quiescent current during operation and shutdown enables amaximum battery life. The device supports charge currents from 5 mA to 300 mA. The input current limit, charge current, PWM output voltage, LDO output voltage, and other parameters are programmable through the I2C interface. The battery is charged using a standard Li-Ion charge profile with three phases: precharge, constant current and constant voltage          

Features
  • Configurable 300mA buck regulator (1.8V default)
  • 700nA typical IQ with PWM enabled (no load)
  • Up to 300mA charge current for fast charging
  • 0.5% accurate battery voltage regulation (configurable from 3.6V to 4.65V in 10mV steps)
  • Configurable termination current down to 500uA

  • u-USB cable is included
Battery charger ICs
BQ25122 — 300-mA linear battery charger with Power Path, integrated LDO and buck converter 1.2V default output
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HARDWARE AND SOFTWARE PACKAGE

Evaluate BQ25122 highly integrated linear battery charger for wearable and hearable applications

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Evaluation board

BQ25122EVM – BQ25122EVM

TI's Standard Terms and Conditions for Evaluation Items apply.

Technical documentation

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Type Title Date
* User guide bq25120AEVM and bq25122EVM Evaluation Modules (Rev. A) Dec. 04, 2017
More literature BQ25122EVM EU Declaration of Conformity (DoC) Jan. 02, 2019

Related design resources

Hardware development

EVALUATION BOARD
BQ25120AEVM — 700nA Low Iq Highly Integrated Battery Charge Management Evaluation Module for Wearables & Hearables
INTERFACE ADAPTER
EV2400 — USB-Based PC Interface Board for Battery Fuel (Gas) Gauge Evaluation Module

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