BQ24630 - 具有系统功率选择器的独立同步开关模式磷酸锂电池充电器

BQ24630是TI德州仪器公司的一款电池充电器IC产品，BQ24630是具有系统功率选择器的独立同步开关模式磷酸锂电池充电器，本站介绍了BQ24630的封装应用图解、特点和优点、功能等，并给出了与BQ24630相关的TI元器件型号供参考。

BQ24630 - 具有系统功率选择器的独立同步开关模式磷酸锂电池充电器 - 电池充电器IC - 电池管理产品 - 德州仪器

产品特性

300-kHz NMOS-NMOS Synchronous Buck Converter
Stand-Alone Charger Specifically for Lithium Phosphate
5-V–28-V VCC Input Operating Range, Supports 1–7 Battery Cells
High-Accuracy Voltage and Current Regulation
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- ±3% Adapter Current Accuracy
Integration
- Automatic System Power Selection From Adapter or Battery
- Internal Loop Compensation
- Internal Soft Start
- Dynamic Power Management (DPM)
Safety Protection
- Input Overvoltage Protection
- Battery Thermistor Sense Suspend Charge at Hot/Cold and Automatically ICHARGE/8 at Hot/Cold or Warm/Cool
- Battery Detection
- Reverse Protection Input FET
- Programmable 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% Max. Effective Duty Cycle
24-Pin 4-mm × 4-mm QFN Package
Energy Star Low Quiescent Current Iq
- < 15-μA Off-State Battery Discharge Current
- < 1.5-mA Off-State Input Quiescent Current

产品应用

Power Tool and Portable Equipment
Personal Digital Assistants
Handheld Terminals
Industrial and Medical Equipment
Netbook, Mobile Internet Device, and Ultra-Mobile PC

产品说明

The bq24630 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, adapter current regulation, and charge status monitoring.

The bq24630 charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum user-selectable level. A programmable charge timer provides a safety backup. The bq24630 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
bq24630	VQFN (24)	4.00 mm × 4.00 mm

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