Product details


Number of series cells 1 Charge current (Max) (A) 0.5 Operating Vin (Max) (V) 5.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 3.6 Battery charge voltage (Max) (V) 4.6 Absolute Vin (safety rating) (Max) ((V)) 20 Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Integrated ADC, Integrated LDO, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Operating Vin (Min) (V) 3.4 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

DSBGA (YFP) 20 4 mm² 1.655 x 2.055 open-in-new Find other Battery charger ICs


  • Linear battery charger with 1.25-mA to 500-mA fast charge current range
    • 0.5% Accurate I2C programmable battery regulation voltage ranging from 3.6 V to 4.6 V in 10-mV steps
    • Configurable termination current supporting down to 0.5 mA
    • 20-V Tolerant input with typical 3.4-V to 5.5-V input voltage operating range
    • Programmable thermal charging profile, fully configurable hot, warm, cool and cold thresholds
  • Power path management for powering system and charging battery
    • Dynamic power path management optimizes charging from weak adapters
    • Advanced I2C control allows host to disconnect the battery or adapter as needed
  • I2C Configurable load switch or up to 150-mA LDO output
    • Programmable range from 0.6 V to 3.7 V in 100-mV steps
  • Ultra low Iddq for extended battery life
    • 10-nA Ship mode battery Iq
    • 400-nA Iq While powering the system (PMID and VDD on)
  • One push-button wake-up and reset input with adjustable timers
    • Supports system power cycle and HW reset
  • 12-Bit effective ADC
    • Monitoring of charge current, battery thermistor and battery, input and system (PMID) voltages
    • General purpose ADC input
  • Always on 1.8-V VDD LDO supporting loads up to 10 mA
  • 20-Pin 2-mm x 1.6-mm CSP package
  • 12-mm2 Total solution size
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The BQ25150 is a highly integrated battery charge management IC that integrates the most common functions for wearable devices, namely a charger, an output voltage rail, ADC for battery and system monitoring, and push-button controller.

The BQ25150 IC integrates a linear charger that enables quick and accurate charging for small batteries. The device supports charge current up to 500mA and supports termination current down to 0.5mA for maximum charge. The battery is charged using a standard Li-Ion charge profile with three phases: pre-charge, constant current and constant voltage regulation.

The device integrates advanced power path management and control that allows the device to provide power to the system while charging the battery even with poor adapters. The host may also control the power path through I2C allowing it to disconnect the input adapter and/or battery without physically removing them. The single push-button input eliminates the need of a separate button controller IC reducing the total solution footprint. The push-button input can be used for wake functions or to reset the system. A 12-bit effective ADC enables accurate battery voltage monitoring and can be used to enable a low Iq gauging to monitor battery health. It can also be used to measure the battery temperature using a thermistor connected to the TS pin as well as external system signals through a pin. The low quiescent current during operation and shutdown enables maximum battery life. The input current limit, charge current, LDO output voltage, and other parameters are programmable through the I2C interface making the BQ25150 a very flexible charging solution. A voltage-based JEITA compatible (or standard HOT/COLD) 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 temperature thresholds are also programable through I2C allowing the host to customize the thermal charging profile. The charger is optimized for 5V USB input, with 20V absolute maximum tolerance to withstand line transients. The device also integrates a linear regulator to provide a quiet rail for radios or processors and can be independently sourced and controlled through I2C.

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BQ25155 ACTIVE 500-mA 1-cell linear charger with 10-nA IQ, power path, regulated system voltage, 16-bit ADC and LDO This product is a 500-mA 1-cell I2C linear charger with 16-bit ADC, 10-nA IQ, power path, regulated system voltage and LDO
Similar functionality to the compared device.
BQ25125 ACTIVE Low IQ highly integrated battery charge management solution for wearables and IoT This product is a 300-mA, I2C, Li-ion battery charger with integrated DC-DC buck and LDO in a 2.5x2.5mm package

Technical documentation

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Type Title Date
* Data sheet BQ25150 500-mA Linear charger with 10-nA ship mode, advanced power path management and control, ADC, and LDO datasheet (Rev. B) Feb. 07, 2019
Application note High-Efficiency Charging for TWS Using a 2-Pin Interface Application Report Jun. 18, 2020
Technical article When to use rechargeable batteries in small battery applications Oct. 01, 2019
Application note Battery Discharge Implementation in Warm or Hot Temperatures Jul. 02, 2019
Application note BQ2515x Setup Guide Jun. 18, 2019
User guide BQ2515xEVM User's Guide (Rev. A) Jun. 13, 2019
Technical article Pull the tab: How to implement ship mode in your lithium-ion battery design Feb. 20, 2019
User guide Small Form Factor Design for BQ25150 Jul. 24, 2018
Technical article Should I use a linear charger or a switching charger? Oct. 31, 2015
Technical article Summertime and the livin' is easy Jun. 20, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
The bq25150EVM evaluation module is an integrated battery charge management IC that integrates the most common functions for wearables devices: Linear charger, regulated output, load switch, manual reset with timer, ADC, ship mode and advanced power path. The low quiescent current during operation (...)
  • Configurable battery charger
  • Multi Point ADC to measure 7 channels
  • Advanced power path to power system through either battery or adapter
  • Programmable hard and soft reset
  • 0.5% accurate battery voltage regulation
  • Wake timers for push button
document-generic User guide

The EV2400 EVM interface board enables an IBM-compatible or other type PC (with the required driver for its particular platform) to communicate with the Texas Instruments SMBus or I2C interface gas gauges via a Universal Serial Bus (USB) port. In addition to this board, PC software is required to (...)

  • Fully powered from the USB port
  • Optional 5-V port for powering high power voltage drivers (future upgrade)
  • Complete interface between the USB and SMBus, I2C (8/16) interfaces
  • Expansion port for future upgrades

Software development

Battery Management Studio (bqStudio) Software
BQSTUDIO Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
  • Real-time Gauge Dashboard for monitoring basic registers
  • Full register access and logging
  • Full data memory access and logging
  • Product configuration and monitoring tools
  • Import and export of product configurations
  • Calibration and test automation
  • Export of FS files for the target production environment 
Linux driver for BQ2515X
BQ2515XSW-LINUX — The Linux driver supports the BQ25155 I2C controlled, 1-cell, 500-mA linear charger. The Linux driver supports communication through the I2C bus and interfaces with the power supply sub-system.

Linux Mainline Status

Available in Linux Main line: Yes
Available through no   

Supported Devices:

  • (...)

Design tools & simulation

SLUC670.ZIP (350 KB)
SLUC679A.ZIP (601 KB)

Reference designs

Tiny, ultra-low Iq DC-DC power supply with battery charging reference design for wearables
PMP21884 — A highly-integrated power supply reference design for smartwatches and fitness trackers enabling ultra-low Iq in an ultra-small (48sqmm) solution size. Supply includes seven power rails for the system including battery charger, LDO, DC-DC buck converters and integrated boost converter for heart rate (...)
document-generic Schematic

CAD/CAE symbols

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DSBGA (YFP) 20 View options

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