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

BQ25050

ACTIVO

Cargador de batería de iones de litio de 1 celda, 1 A, entrada única con LDO de 50 mA

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BQ24072 ACTIVO Cargador de batería lineal independiente de 1 celdas 1,5 A, ruta de alimentación, 4,2 V VBAT y VOUT= This product is a 1.5-A, standalone, single-cell Li-Ion battery charger with power path in a 3x3mm package.

BQ25050

ACTIVO
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Detalles del producto

Number of series cells 1 Charge current (max) (A) 1 Vin (max) (V) 10.2 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 30 Control topology Linear Control interface Standalone (RC-Settable) Features IC thermal regulation, Input OVP, Integrated LDO, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.4 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 1 Vin (max) (V) 10.2 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 30 Control topology Linear Control interface Standalone (RC-Settable) Features IC thermal regulation, Input OVP, Integrated LDO, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.4 Rating Catalog Operating temperature range (°C) -40 to 85
WSON (DQC) 10 6 mm² 3 x 2
  • 30V input Rating, With 10.5V Over-Voltage Protection (OVP)
  • FET Controller for External Battery FET for External Power Path Control (BGATE)
  • Input Voltage Dynamic Power Management
  • 50mA integrated Low Dropout Linear Regulator (LDO)
  • Programmable Charge Current Through Single Input Interface (CTRL)
  • 0.5% Battery Voltage Regulation Accuracy
  • 7% Charge Current Regulation Accuracy
  • Thermal Regulation and Protection
  • Battery NTC Monitoring During Charge and Discharge
  • Status Indication – Charging/Done and Temperature Faults
  • Available in small 2mm × 3mm 10 Pin SON Package
  • APPLICATIONS
    • Smart Phones
    • Mobile Phones
    • Portable Media Players
    • Low Power Handheld Devices
  • 30V input Rating, With 10.5V Over-Voltage Protection (OVP)
  • FET Controller for External Battery FET for External Power Path Control (BGATE)
  • Input Voltage Dynamic Power Management
  • 50mA integrated Low Dropout Linear Regulator (LDO)
  • Programmable Charge Current Through Single Input Interface (CTRL)
  • 0.5% Battery Voltage Regulation Accuracy
  • 7% Charge Current Regulation Accuracy
  • Thermal Regulation and Protection
  • Battery NTC Monitoring During Charge and Discharge
  • Status Indication – Charging/Done and Temperature Faults
  • Available in small 2mm × 3mm 10 Pin SON Package
  • APPLICATIONS
    • Smart Phones
    • Mobile Phones
    • Portable Media Players
    • Low Power Handheld Devices

The bq25050 is a highly integrated Li-Ion linear battery charger targeted at space-limited portable applications. It operates from either a USB port or AC Adapter and charges a single-cell Li-Ion battery with up to 1A of charge current. The 30V input voltage range with input over-voltage protections supports low-cost unregulated adapters.

The bq25050 has a single power output that charges the battery. The system load is connected to OUT. The low-battery system startup circuitry maintains OUT greater than 3.4V whenever an input source is connected. This allows the system to start-up and run whenever an input source is connected regardless of the battery voltage. The charge current is programmable up to 1A using the CTRL input. Additionally, a 4.9V 50mA LDO is integrated into the IC for supplying low power external circuitry.

The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination.

The bq25050 is a highly integrated Li-Ion linear battery charger targeted at space-limited portable applications. It operates from either a USB port or AC Adapter and charges a single-cell Li-Ion battery with up to 1A of charge current. The 30V input voltage range with input over-voltage protections supports low-cost unregulated adapters.

The bq25050 has a single power output that charges the battery. The system load is connected to OUT. The low-battery system startup circuitry maintains OUT greater than 3.4V whenever an input source is connected. This allows the system to start-up and run whenever an input source is connected regardless of the battery voltage. The charge current is programmable up to 1A using the CTRL input. Additionally, a 4.9V 50mA LDO is integrated into the IC for supplying low power external circuitry.

The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination.
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Documentación técnica

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Tipo Título Fecha
* Data sheet 1A, Single-Input, Single Cell Li-Ion Battery Charger with 50-mA LDO and Minimum datasheet 25 mar 2010
EVM User's guide bq25050/bq25060EVM User's Guide 21 jul 2010

Diseño y desarrollo

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Placa de evaluación

BQ25050EVM — Módulo de evaluación para cargador de baterías de iones de litio BQ25050 de 1A y una sola entrada co

The bq25050EVM assists users in evaluating the bq25050 linear battery chargers. The User's Guide manual includes the bq25050EVM bill of materials, board layout, and schematic. The bq25050/60 is a highly integrated Li-Ion linear battery charger targeted at space-limited portable applications. It (...)

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