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BQ25120 Datasheet PDF

Part Series:BQ25120 Series
Category:Battery Management
Description:TEXAS INSTRUMENTS BQ25120YFPT Battery Charger for 1 Cell of Li-Ion, Li-Pol battery, 5.5V input, 4.65V / 250mA charge, DSBGA-25
Document:BQ25120YFPT Datasheet PDF (70 Pages)

BQ25120 Datasheet PDF Battery Management

68 Pages
TI
Power Management IC Development Tools 250mA 75nA 6-DSBGA 0 to 125

BQ25120YFPT - TI Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Number of Pins
25 Pin
Case/Package
DSBGA-25
Input Voltage (DC)
5.50 V
Output Voltage
3.6V ~ 4.65V
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BQ25120YFPT - TI Function Overview

The bq2512x is a highly integrated battery charge management IC that integrates the most common functions for wearable devices: Linear charger, regulated output, load switch, manual reset with timer, and battery voltage monitor. The integrated buck converter is a high efficiency, low IQ switcher using DCS control that extends light load efficiency down to 10-µA load currents. The low quiescent current during operation and shutdown enables maximum battery life. The device supports charge currents from 5 mA to 300 mA. The input current limit, charge current, buck converter 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. A voltage-based JEITA compatible battery pack thermistor monitoring input (TS) is included that monitors battery temperature and automatically changes charge parameters to prevent the battery from charging outside of its safe temperature range. The charger is optimized for 5-V USB input, with 20-V tolerance to withstand line transients. The buck converter is run from the input or battery. When in battery only mode, the device can run from a battery up to 4.65 V.
A configurable load switch allows system optimization by disconnecting infrequently used devices. The manual reset with timer allows mutliple different configuration options for wake are reset optimization. A simple voltage based monitor provides battery level information to the host in 2% increments from 60% to 100% of the programmed V(BATREG).
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