Code example or demo
BQ24250
1-cell, 2-A, I2C controlled buck battery charger with 1uA in SYSOFF mode and TS disable function
Data sheet
BQ24250
- High-Efficiency Switched-Mode Charger With
Separate Power Path - Startup System From Deeply Discharged or
Missing Battery - USB Charging Compliant
- Selectable Input Current Limit of 100 mA,
500 mA, 900 mA, 1.5 A, and 2 A
- Selectable Input Current Limit of 100 mA,
- BC1.2 Compatible D+, D– Detection
- In Host Mode (After I2C Communication Starts
and Before Watchdog Timer Times Out)- Programmable Battery Charge Voltage,
VBATREG - Programmable Charge Current (ICHG)
- Programmable Input Current Limit (ILIM)
- Programmable Input Voltage-Based Dynamic
Power Management Threshold, (VIN_DPM) - Programmable Input Overvoltage Protection
Threshold (VOVP) - Programmable Safety Timer
- Programmable Battery Charge Voltage,
- Resistor Programmable Defaults for:
- ICHG up to 2 A With Current Monitoring Output
(ISET) - ILIM up to 2 A With Current Monitoring Output
(ILIM) - VIN_DPM (VDPM)
- ICHG up to 2 A With Current Monitoring Output
- Watchdog Timer Disable Bit
- Integrated 4.9 V, 50 mA LDO
- Complete System-Level Protection
- Input UVLO, Input Overvoltage Protection
(OVP), Battery OVP, Sleep Mode, VIN_DPM - Input Current Limit
- Charge Current Limit
- Thermal Regulation
- Thermal Shutdown
- Voltage-Based, JEITA Compatible NTC
Monitoring Input - Safety Timer
- Input UVLO, Input Overvoltage Protection
- 22 V Absolute Maximum Input Voltage Rating
- 10.5 V Maximum Operating Input Voltage
- Low RDS(on) Integrated Power FETs for a Charging
Rate of up to 2 A - Open-Drain Status Outputs
- Synchronous Fixed-Frequency PWM Controller
Operating at 3 MHz for Small Inductor Support - AnyBoot Robust Battery Detection Algorithm
- Charge Time Optimizer for Improved Charge
Times at Any Given Charge Current - 2.40-mm × 2.00-mm 30-Ball DSBGA and 4-mm ×
4-mm 24-Pin QFN Packages
The bq24250, bq24251, and bq24253 are highly integrated single-cell Li-Ion battery chargers and system power-path management devices targeted for space-limited, portable applications with high-capacity batteries. The single-cell charger has a single input that operates from either a USB port or an AC wall adapter for a versatile solution.
The power-path management feature allows the bq24250, bq24251, and bq24253 to power the system from a high-efficiency DC-DC converter while simultaneously and independently charging the battery. The charger monitors the battery current at all times and reduces the charge current when the system load requires current above the input current limit. This reduced charge current allows for proper charge termination and enables the system to run with a defective or absent battery pack. Additionally, this reduced charge current enables instant system turnon even with a totally discharged battery or no battery. The architecture of the power-path management also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents. This supplementation of current requirements enables the use of a smaller adapter.
The battery is charged in four phases: trickle charge, precharge, constant current, and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. Additionally, a voltage-based, JEITA compatible battery pack thermistor monitoring input (TS) that monitors battery temperature for safe charging is included.
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Technical documentation
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View all 10 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | bq2425x 2A Single-Input I2C, Stand-Alone Switched-Mode Li-Ion Battery Charger With Power-Path Management datasheet (Rev. H) | PDF | HTML | 20 Aug 2015 |
| Technical article | TI DLP® NIRscan™ Nano Evaluation Module has answers to your handheld near-infrared | PDF | HTML | 02 Oct 2015 | |
| Product overview | Battery Management Solutions for Point of Sale Systems | 18 Aug 2014 | ||
| Analog Design Journal | Battery-charging considerations for high-power portable devices | 11 Apr 2014 | ||
| Analog Design Journal | Extract maximum power from the supply when charging a battery | 11 Apr 2014 | ||
| Application note | Building your own Battery Simulator | 14 Oct 2013 | ||
| Application note | Using bq2425x’s DPM Feature for Solar Panel Applications | 31 Jul 2013 | ||
| Application note | Selecting the Best bq2425x Single Cell I2C, Standalone Switch-Mode Battery Charg | 17 Jun 2013 | ||
| User guide | bq24257EVM-150, Single-Cell Li-Ion Switch-Mode Charger (Rev. A) | 03 Apr 2013 | ||
| Product overview | Power Bank Charger ICs | 25 Feb 2013 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
BOOSTXL-BATPAKMKII — Fuel Tank MKII Battery BoosterPack Plug-In Module
The Fuel Tank MKII BoosterPack™ plug-in module is the next generation design of the original Fuel Tank BoosterPack module. It includes next-generation TI battery monitoring ICs and other new features to make it easier to use. It allows TI LaunchPad™ development kits to be powered from (...)
User guide: PDF
Evaluation board
BQ24250EVM-150 — BQ24250EVM-150 Single Input I2C/Standalone Switch-Mode Li-Ion Battery Charger Evaluation Module
This EVM enables test and evaluation of the Texas Instruments' bq24250/51/57 devices. The bq2425x series are highly integrated single cell Li-Ion battery chargers targeted for space-limited, portable applications with high capacity batteries. The single cell charger has a single input that (...)
User guide: PDF
Application software & framework
TI-CHARGER-GUI — GUI software for use with USB2ANY & battery charging evaluation modules
The TI-CHARGER-GUI offers a web-based or standalone graphical user interface to assist in the process of evaluating, designing with, configuring or testing battery charger products. The software provides full access to registers and an easy interface to send and sequence commands.
Driver or library
BQ24257SW-LINUX — Linux Driver for BQ2425x
The Linux driver supports the BQ2425x switch-mode Li-ion battery charger. The Linux driver supports communication through the I2C bus and interfaces with the power supply sub-system.
Linux mainline status
Available in Linux mainline: Yes
Available through git.ti.com: N/A
Linux source files
The files (...)
Support software
SLUC435 — bq24250EVM Software
Supported products & hardware
Products
Battery charger ICs
Hardware development
Evaluation board
Calculation tool
SLUC436 — Thermal TS bq2425x Calculator Tool
Supported products & hardware
Products
Battery charger ICs
Hardware development
Evaluation board
Reference designs
TIDA-00554 — DLP Ultra-mobile NIR Spectrometer for Portable Chemical Analysis with Bluetooth Connectivity
The ultra-mobile near-infrared (NIR) spectrometer reference design utilizes Texas Instruments' DLP technology in conjunction with a single-element InGaAs detector to deliver high performance measurements in a portable form factor that is more affordable than architectures using an expensive InGaAs (...)
Reference designs
TIDA-00587 — Charger Booster Pack Reference Design
The TIDA-00587 reference design is a charger that has been designed as a booster pack to fit on the TI Launchpad development boards. The use of this this board for development will reduce the time spent in design and test of the bq24250 charger IC. You can charger your battery and using the on (...)
Reference designs
TIDA-00048 — 2A Single input I2C/standalone switch mode li-ion battery charger reference design
This reference design contains highly integrated single cell Li-Ion battery chargers targeted for space-limited, portable applications with high capacity batteries. The solution includes a single cell charger with a single input that operates from either a USB port or AC wall adapter for a (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| DSBGA (YFF) | 30 | Ultra Librarian |
| VQFN (RGE) | 24 | Ultra Librarian |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Information included:
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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