300-kHz NMOS-NMOS Synchronous Buck
Converter
Stand-Alone Charger Designed Specifically for
Lithium Phosphate
5-V to 28-V VCC Operating Range, Supports 1 to
7 Battery Cells
High-Accuracy Voltage and Current Regulation
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
Integration
- Internal Loop Compensation
- Internal Soft Start
Safety
- Input Overvoltage Protection
- Battery Thermistor Sense Suspend Charge at
  Hot/Cold Charge Suspend and Automatically
  I_CHARGE/8 at WARM/COOL
- Battery Detection
- Built-In Safety Timer
- Charge Overcurrent Protection
- Battery Short Protection
- Battery Overvoltage Protection
- Thermal Shutdown
Status Outputs
- Adapter Present
- Charger Operation Status
Charge Enable Pin
6-V Gate Drive for Synchronous Buck Converter
30-ns Driver Dead Time and 99.95% Maximum
Effective Duty Cycle
16-Pin 3.5-mm × 3.5-mm QFN Package
Energy Star Low I_q
- < 15-µA Off-State Battery Discharge Current
- < 1.5-mA Off-State Input Quiescent Current
APPLICATIONS
- Power Tools and Portable Equipment
- Personal Digital Assistants
- Handheld Terminals
- Industrial and Medical Equipment
- Netbooks, Mobile Internet Devices, and
  Ultramobile PCs

All other trademarks are the property of their respective owners

open-in-new

Find other Battery charger ICs

The bq24620 device is a highly integrated lithium phosphate switched-mode battery charge controller. The device offers a constant-frequency synchronous switching PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination, and charge status monitoring.

The bq24620 charges the battery in three phases: preconditioning, constant current, and constant voltage.

open-in-new

Find other Battery charger ICs

Download

Technical documentation

= Top documentation for this product selected by TI

No results found. Please clear your search and try again.

View all 6

	Type	Title	Date
*	Datasheet	bq24620 Stand-Alone Synchronous Switched-Mode Lithium Phosphate Battery Charger With Low Iq datasheet (Rev. B)	Jun. 17, 2015
	Application note	BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers	Dec. 31, 2019
	Technical articles	When to use rechargeable batteries in small battery applications	Oct. 01, 2019
	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	Multi Cell Synchronous Switch-Mode Charger, EVM (HPA421)	Feb. 18, 2010

Design & development

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

Hardware development

EVALUATION BOARD Download

Evaluation Module for BQ24620 Multi Cell Synchronous Switch-Mode Charger

BQ24620EVM

Description

Evaluation Module for bq24600/bq24620/bq24640. the bq24600 is a highly integrated Li-ion or Li-polymer switch-mode battery charge controller. The bq24620 is highly integrated switch-mode battery charge controller designed specifically to charge Lithium Phosphate battery chemistries. The bq24640 is (...)