Home Power management Battery management ICs Battery charger ICs

BQ25050

ACTIVE

1-cell, 1-A, single input, Li-ion battery charger with 50-mA LDO

A newer version of this product is available

open-in-new Compare alternates
Similar functionality to the compared device
BQ24072 ACTIVE Standalone 1-cell 1.5-A linear battery charger, Power Path, 4.2-V VBAT and VOUT=VBAT + 225mV This product is a 1.5-A, standalone, single-cell Li-Ion battery charger with power path in a 3x3mm package.

Product details

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.

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* 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

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

BQ25050EVM — Evaluation Module for BQ25050 1A, Single-Input, Single Cell Li-Ion Battery Charger with 50-mA LDO

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 (...)

User guide: PDF
Not available on TI.com
Package Pins Download
WSON (DQC) 10 View options

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

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos