Ejemplo de código o demostración
BQ24250
Cargador de batería reductor de 1 celda, 2 A, controlado por I2C con 1uA en modo SYSOFF y función de
Hoja de datos
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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Documentación técnica
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Ver todo 10 | Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | 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 ago 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 ago 2014 | ||
| Analog Design Journal | Battery-charging considerations for high-power portable devices | 11 abr 2014 | ||
| Analog Design Journal | Extract maximum power from the supply when charging a battery | 11 abr 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 abr 2013 | ||
| Product overview | Power Bank Charger ICs | 25 feb 2013 |
Diseño y desarrollo
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
Placa de evaluación
BOOSTXL-BATPAKMKII — Módulo enchufable BoosterPack de batería MKII del depósito de combustible
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 (...)
Guía del usuario: PDF
Placa de evaluación
BQ24250EVM-150 — Módulo de evaluación de cargador de batería de iones de litio de modo conmutado I2C/independiente de
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 (...)
Guía del usuario: PDF
Software de aplicación y estructura
TI-CHARGER-GUI — Software GUI para su uso con USB2ANY y módulos de evaluación de carga de la batería
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.
Controlador o biblioteca
BQ24257SW-LINUX — Controlador Linux para 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 (...)
Soporte de software
SLUC435 — bq24250EVM Software
Productos y hardware compatibles
Productos
Circuitos integrados para cargadores de baterías
Desarrollo de hardware
Placa de evaluación
Herramienta de cálculo
SLUC436 — Thermal TS bq2425x Calculator Tool
Productos y hardware compatibles
Productos
Circuitos integrados para cargadores de baterías
Desarrollo de hardware
Placa de evaluación
Diseños de referencia
TIDA-00554 — Espectrómetro DLP Ultra-mobile NIR para análisis químico portátil con conectividad Bluetooth
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 (...)
Diseños de referencia
TIDA-00587 — Diseño de referencia del paquete de refuerzo de cargadores
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 (...)
Diseños de referencia
TIDA-00048 — Diseño de referencia de cargador de batería de iones de litio con modo conmutado I2C/independiente d
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 (...)
| Paquete | Pasadores | Descargar |
|---|---|---|
| DSBGA (YFF) | 30 | Ver opciones |
| VQFN (RGE) | 24 | Ver opciones |
Pedidos y calidad
Información incluida:
- RoHS
- REACH
- Marcado del dispositivo
- Acabado de plomo/material de la bola
- Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
- Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
- Contenido del material
- Resumen de calificaciones
- Monitoreo continuo de confiabilidad
Información incluida:
- Lugar de fabricación
- Lugar de ensamblaje
Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.
Soporte y capacitación
Foros de TI E2E™ con asistencia técnica de los ingenieros de TI
El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.
Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI.