Support software
BQ25150
I2C controlled 500-mA linear battery charger with Power Path, Low Iq, integrated LDO and 16-bit ADC
Data sheet
BQ25150
- Linear battery charger with 1.25-mA to 500-mA fast charge current range
- 0.5% Accurate I 2C 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 I 2C control allows host to disconnect the battery or adapter as needed
- I 2C 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
- 16-Bit 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-mm 2 Total solution size
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 500 mA and supports termination current down to 0.5 mA 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 I 2C 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 the ADCIN 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 I 2C 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 I 2C allowing the host to customize the thermal charging profile. The charger is optimized for 5-V USB input, with 20-V 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 I 2C.
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Technical documentation
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View all 9 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | BQ25150 I2C Controlled 1-Cell 500-mA Linear Charger with 10-nA Ship Mode, Advanced Power Path Management and Control, ADC, and LDO datasheet (Rev. C) | PDF | HTML | 26 Apr 2023 |
| Application note | Implementing 2-V Charge Inhibition | PDF | HTML | 31 May 2023 | |
| Application note | High-Efficiency Charging for TWS Using a 2-Pin Interface Application Report (Rev. A) | PDF | HTML | 16 May 2023 | |
| Application note | State of Charge Estimation Using Smart Battery Charger | PDF | HTML | 11 Oct 2021 | |
| Application note | Battery Discharge Implementation in Warm or Hot Temperatures | 02 Jul 2019 | ||
| Application note | BQ2515x Setup Guide | 18 Jun 2019 | ||
| EVM User's guide | BQ2515xEVM User's Guide (Rev. A) | 13 Jun 2019 | ||
| Technical article | Pull the tab: How to implement ship mode in your lithium-ion battery design | PDF | HTML | 20 Feb 2019 | |
| User guide | Small Form Factor Design for BQ25150 | 24 Jul 2018 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
BQ25150EVM — Low IQ advanced powerpath charge management solution for wearables and hearables evaluation module
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 (...)
User guide: PDF
Interface adapter
EV2400 — USB-Based PC Interface Board for Battery Fuel (Gas) Gauge Evaluation Module
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 (...)
User guide: PDF
Application software & framework
BQSTUDIO — Battery Management Studio (bqStudio) Software
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 (...)
Driver or library
BQ2515XSW-LINUX — Linux driver for BQ2515X
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.
Available through git.ti.com: no
Linux Mainline Status
Available in Linux Main line: YesAvailable through git.ti.com: no
Supported (...)
Reference designs
PMP21884 — Tiny, ultra-low IQ DC/DC power supply with battery charging reference design for wearables
This is a highly-integrated power supply reference design for smartwatches and fitness trackers enabling ultra-low IQ that is ultra-small (48 sq mm). Supply includes seven power rails including battery charger, LDO, DC/DC buck converters and integrated boost converter for heart rate monitor, AFE (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| DSBGA (YFP) | 20 | Ultra Librarian |
Ordering & quality
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