BQ25190数据手册TI中文资料规格书

描述 Description

The BQ25190 is a highly integrated battery management unit that integrates the most commonly used functions for wearable devices: a linear charger with power path, one step-down switching converter (Buck), one buck-boost switching converter (Buck-boost), two LDOs (LDO1 and LDO2), manual reset with timer (MR) , multi-channel analog-to-digital converter (ADC), as well as four multifunctional general-purpose input/outputs (GPIO).

The integrated charger supports charge current from 5mA to 1A that enables quick and accurate charging while providing a regulated voltage to the system. The regulated system voltage (VSYS) can be configured through I2C based on the recommended operating conditions of the downstream system loads. Other operation parameters such as the input current limit, charge current, Buck converters’ output voltages, Buck-boost converters’ output voltage, and LDOs’ output voltages are also programmable through the I2C interface.

The BQ25190 features low quiescent current during operation and shutdown, which enables longer battery life.

特性 Features

Integrated 1A power path linear battery charger

3.0V to 18.0V input voltage operating range

Input voltage up to 25V tolerant

Configurable battery regulation voltage with ±0.5% accuracy from 3.5V to 4.65V in 10mV steps

5mA to 1A configurable fast charge current

55mΩ BATFET on-resistance

Up to 2.5A discharge current to support high system loads

Fully programmable JEITA profile for safe charging over temperature



Power path management for powering the system and charging the battery

Regulated system voltage ranging from 4.4V to 4.9V in addition to battery voltage tracking and input pass-through options

Configurable input current limit

Dynamic power path management optimizes charging from weak adapters

Selectable adapter or battery for system power

Advanced system reset mechanisms



Ultra-low quiescent current modes

2µA battery quiescent current in battery mode

15nA battery quiescent current in ship mode



Integrated Buck converter with I2C and GPIO programmable DVS output

0.36µA quiescent current from system

0.4V to 1.575V output voltage in 12.5mV steps or 0.4V to 3.6V output voltage in 25mV/50mV steps

Up to 600mA output current



Integrated Buck-boost converter with I2C programmable DVS output

0.1µA quiescent current from system

1.7V to 5.2V output voltage in 50mV steps

Up to 600mA output current for VSYS ≥ 3.0V, VBBOUT = 3.3V



Integrated I2C programmable LDOs (LDO1 and LDO2)

25nA quiescent current

0.8V to 3.6V output voltage in 50mV steps

Up to 200mA output current

LDO1 capabal of remaining on in Ship mode

Configurable LDO or Bypass mode

Dedicated input pins



Integrated fault protection for safety

Input current limit and overvoltage protection

Battery, integrated rail overcurrent protection

Battery depletion protection

Thermal regulation and thermal shutdown



Integrated 12-bit ADC to monitor input current, BATFET current, input voltage, battery voltage, battery temperature or external voltage signals