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Circuitos integrados de gestión de baterías
Circuitos integrados para cargadores de baterías

BQ25125

ACTIVO

Solución de gestión de carga de batería altamente integrada de bajo IQ para dispositivos portátiles

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BQ25125

ACTIVO
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Detalles del producto

Number of series cells 1 Charge current (max) (A) 0.3 Vin (max) (V) 5.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.6 Battery charge voltage (max) (V) 4.65 Absolute max Vin (max) (V) 20 Control topology Linear Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, Input OVP, Integrated LDO, Integrated buck converter, Power Path Vin (min) (V) 3.4 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 0.3 Vin (max) (V) 5.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.6 Battery charge voltage (max) (V) 4.65 Absolute max Vin (max) (V) 20 Control topology Linear Control interface I2C Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, Input OVP, Integrated LDO, Integrated buck converter, Power Path Vin (min) (V) 3.4 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFP) 25 6.75999999999999792000000000000016 mm² 2.5999999999999996 x 2.5999999999999996
  • Increases system operation time between charges
    • Configurable 300-mA buck regulator (1.8 V default)
    • 700-nA (typical) Iq with buck converter enabled (No Load)
    • Configurable load switch or 100-mA LDO output (1.8 V default)
    • Up to 300-mA charge current for fast charging
    • 0.5% Accurate battery voltage regulation (configurable from 3.6 V to 4.65 V in 10-mV steps)
    • Configurable termination current down to 500 µA
    • Simple voltage based battery monitor
    • Watchdog timer enabled by default
    • VDPPM Loop disabled
    • VINDPM Disabled by default to support low voltage charging
  • Highly integrated solution with small footprint
    • 2.5 mm x 2.5 mm WCSP Package and 6 external components for minimal solution
    • Push-button wake-up and reset with adjustable timers
    • Power path management for powering the system and charging the battery
    • Power path management enables <50 nA ship mode battery quiescent current for longest shelf life
    • Battery charger operates from 3.4 V – 5.5 VIN (5.5-V OVP / 20-V tolerant)
    • Dedicated pins for input current limit, charge current, termination current, and status output
  • I2C Communication control
    • Charge voltage and current
    • Termination threshold
    • Input current limit
    • VINDPM Threshold
    • Timer options
    • Load switch control
    • Controls for interrupts for faults and status
    • System output voltage adjustment
    • LDO Output voltage adjustment
  • Safety-Related Certification:
    • TUV IEC 62368-1 Certification
  • Increases system operation time between charges
    • Configurable 300-mA buck regulator (1.8 V default)
    • 700-nA (typical) Iq with buck converter enabled (No Load)
    • Configurable load switch or 100-mA LDO output (1.8 V default)
    • Up to 300-mA charge current for fast charging
    • 0.5% Accurate battery voltage regulation (configurable from 3.6 V to 4.65 V in 10-mV steps)
    • Configurable termination current down to 500 µA
    • Simple voltage based battery monitor
    • Watchdog timer enabled by default
    • VDPPM Loop disabled
    • VINDPM Disabled by default to support low voltage charging
  • Highly integrated solution with small footprint
    • 2.5 mm x 2.5 mm WCSP Package and 6 external components for minimal solution
    • Push-button wake-up and reset with adjustable timers
    • Power path management for powering the system and charging the battery
    • Power path management enables <50 nA ship mode battery quiescent current for longest shelf life
    • Battery charger operates from 3.4 V – 5.5 VIN (5.5-V OVP / 20-V tolerant)
    • Dedicated pins for input current limit, charge current, termination current, and status output
  • I2C Communication control
    • Charge voltage and current
    • Termination threshold
    • Input current limit
    • VINDPM Threshold
    • Timer options
    • Load switch control
    • Controls for interrupts for faults and status
    • System output voltage adjustment
    • LDO Output voltage adjustment
  • Safety-Related Certification:
    • TUV IEC 62368-1 Certification

The BQ25125 is a highly integrated battery charge management IC that integrates the most common functions for wearable devices: Linear charger, regulated output, load switch, manual reset with timer, and battery voltage monitor. The integrated buck converter is a high efficiency, low IQ switcher using DCS-Control™ that extends light load efficiency down to 10-µA load currents.

The low quiescent current during operation and shutdown enables maximum battery life. The device supports charge currents from 5 mA to 300 mA. The input current limit, charge current, buck converter output voltage, LDO output voltage, and other parameters are programmable through the I2C interface.

The battery is charged using a standard Li-Ion charge profile with three phases: precharge, constant current and constant voltage. A voltage-based JEITA compatible 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 charger is optimized for 5-V USB input, with 20-V tolerance to withstand line transients. The buck converter is run from the input or battery. When in battery only mode, the device can run from a battery up to 4.65 V.

A configurable load switch allows system optimization by disconnecting infrequently used devices. The manual reset with timer allows multiple different configuration options for wake are reset optimization. A simple voltage based monitor provides battery level information to the host in 2% increments from 60% to 100% of the programmed V(BATREG).

The BQ25125 is a highly integrated battery charge management IC that integrates the most common functions for wearable devices: Linear charger, regulated output, load switch, manual reset with timer, and battery voltage monitor. The integrated buck converter is a high efficiency, low IQ switcher using DCS-Control™ that extends light load efficiency down to 10-µA load currents.

The low quiescent current during operation and shutdown enables maximum battery life. The device supports charge currents from 5 mA to 300 mA. The input current limit, charge current, buck converter output voltage, LDO output voltage, and other parameters are programmable through the I2C interface.

The battery is charged using a standard Li-Ion charge profile with three phases: precharge, constant current and constant voltage. A voltage-based JEITA compatible 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 charger is optimized for 5-V USB input, with 20-V tolerance to withstand line transients. The buck converter is run from the input or battery. When in battery only mode, the device can run from a battery up to 4.65 V.

A configurable load switch allows system optimization by disconnecting infrequently used devices. The manual reset with timer allows multiple different configuration options for wake are reset optimization. A simple voltage based monitor provides battery level information to the host in 2% increments from 60% to 100% of the programmed V(BATREG).
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Documentación técnica

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* Data sheet BQ25125 Low IQ Highly Integrated Battery Charge Management Solution For Wearables and IoT datasheet (Rev. A) PDF | HTML 20 ene 2021
Technical article 3 ways low-Iq technologies extend battery life without compromising system performance PDF | HTML 05 ene 2024
Application note Implementing 2-V Charge Inhibition PDF | HTML 31 may 2023
White paper Overcoming Low-IQ Challenges in Low-Power Applications (Rev. B) PDF | HTML 12 abr 2023
Application note BQ2512x Frequently Asked Questions 22 nov 2021
Technical article When to use rechargeable batteries in small battery applications PDF | HTML 01 oct 2019
Technical article Pull the tab: How to implement ship mode in your lithium-ion battery design PDF | HTML 20 feb 2019

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

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The bq25120AEVM evaluation module is a highly integrated battery charge management IC that integrates the most common functions for wearables devices: linear charger, regulated output, load switch, manual reset with timer, and battery voltage monitor. The low quiescent current during operation and (...)
Guía del usuario: PDF
No disponible en TI.com
Adaptador de interfaz

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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 (...)

Guía del usuario: PDF
No disponible en TI.com
Herramienta de cálculo

SLURAY9 — BQ25125 Setup Guide Tool

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Circuitos integrados para cargadores de baterías
BQ25125 — Solución de gestión de carga de batería altamente integrada de bajo IQ para dispositivos portátiles
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DSBGA (YFP) 25 Ver opciones
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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

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Soporte y capacitación

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