1 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

2 Applications

• Smart watches and other wearable devices

• Portable medical equipment

• Smart trackers

• Retail automation and payment

3 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 (Buckboost),

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).