Top

Product details

Parameters

Number of series cells 1 Charge current (Max) (A) 0.5 Operating Vin (Max) (V) 10.2 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 4.35 Battery charge voltage (Max) (V) 4.35 Absolute Vin (safety rating) (Max) ((V)) 28 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), Input OVP, Power Path Operating Vin (Min) (V) 4.35 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

VQFN (RGT) 16 9 mm² 3 x 3 open-in-new Find other Battery charger ICs

Features

  • Fully Compliant USB Charger
    • Selectable 100-mA and 500-mA Maximum Input Current
    • 100-mA Maximum Current Limit Ensures Compliance to USB-IF Standard
    • Input-based Dynamic Power Management (VIN– DPM) for Protection Against Poor USB Sources
  • 28-V Input Rating With Overvoltage Protection
  • 4.35-V Battery Regulation
  • Integrated Dynamic Power-Path Management (DPPM) Function Simultaneously and Independently Powers the System and Charges the Battery
  • Supports up to 500-mA Charge Current With Current Monitoring Output (ISET)
  • Programmable Input Current Limit up to 500 mA for Wall Adapters
  • Programmable Termination Current (bq24232H)
  • Programmable Precharge and Fast-Charge Safety Timers
  • Reverse Current, Short-Circuit, and Thermal Protection
  • NTC Thermistor Input
  • Proprietary Start-up Sequence Limits Inrush Current
  • Status Indication – Charging/Done, Power Good
  • Small 3-mm × 3-mm 16-Lead QFN Package

All trademarks are the property of their respective owners.

open-in-new Find other Battery charger ICs

Description

The bq2423xH series of devices are highly integrated Li-ion linear chargers and system power-path management devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter and support charge currents from 25 mA to 500 mA. The high-input voltage range with input overvoltage protection supports low-cost, unregulated adapters. The USB input current limit accuracy and start-up sequence allow the bq2423xH to meet USB-IF inrush current specifications. Additionally, the input dynamic power management (VIN-DPM) prevents the charger from crashing poorly designed or incorrectly configured USB sources.

The bq2423xH features dynamic power-path management (DPPM) that powers the system while simultaneously and independently charging the battery. The DPPM circuit reduces the charge current when the input current limit causes the system output to fall to the DPPM threshold, thus supplying the system load at all times while monitoring the charge current separately. This feature reduces the number of charge and discharge cycles on the battery, allows for proper charge termination, and enables the system to run with a defective or absent battery pack. Additionally, this feature enables instant system turn-on even with a totally discharged battery. The power-path management architecture also lets the battery supplement the system current requirements when the adapter cannot deliver the peak system currents, thus enabling the use of a smaller adapter.

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 the 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 input current limit and charge current are programmable using external resistors.

open-in-new Find other Battery charger ICs
Download
Similar products you might be interested in
open-in-new Compare products
Similar but not functionally equivalent to the compared device:
BQ21061 ACTIVE 500-mA 1-cell linear charger with 10-nA ship mode, power-path, regulated system voltage and LDO This product is a 500-mA 1-cell I2C linear charger with 10-nA IQ, power path and a LDO

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet bq2423xx USB-Friendly Lithium-Ion Battery Charger and Power-Path Management IC datasheet (Rev. B) Apr. 08, 2017
Application note Configuring Standalone Linear Power Path Chargers (Rev. A) Apr. 06, 2020
Technical articles When to use rechargeable batteries in small battery applications Oct. 01, 2019
Application note Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) May 01, 2018
Application note 2Q 2016 Analog Applications Journal Issue Apr. 26, 2016
Application note Battery-charging considerations for low-power applications Apr. 26, 2016
Technical articles Should I use a linear charger or a switching charger? Oct. 30, 2015
Technical articles Summertime and the livin' is easy Jun. 20, 2014
User guide bq24230H and bq24232H 1.5-A Single-Chip Li-Ion Jan. 29, 2014

Design & development

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

Hardware development

EVALUATION BOARD Download
49
Description

The bq2423XH evaluation module (EVM) is a complete charger module for evaluating compact, linear mode battery charge and power path management solution for single-cell, Li-ion and Li-polymer battery-powered systems used in a wide range of portable applications.

Features
  • Adapter input operating range of 4.35 V –6.4 V (230H), 4.35 V –10 V (232H)
  • LED indication for status signals
  • Test points for key signals available for testing purposes.

Design tools & simulation

GERBER FILE Download
SLUC670.ZIP (350 KB)

CAD/CAE symbols

Package Pins Download
VQFN (RGT) 16 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

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

Related videos