BQ24753A - 具有低 Iq 和系统电源选择器的主机控制锂离子和锂聚合物电池充电器

BQ24753A是TI德州仪器公司的一款电池充电器IC产品，BQ24753A是具有低 Iq 和系统电源选择器的主机控制锂离子和锂聚合物电池充电器，本站介绍了BQ24753A的封装应用图解、特点和优点、功能等，并给出了与BQ24753A相关的TI元器件型号供参考。

BQ24753A - 具有低 Iq 和系统电源选择器的主机控制锂离子和锂聚合物电池充电器 - 电池充电器IC - 电池管理产品 - 德州仪器

产品特性

NMOS-NMOS Synchronous Buck Converter with 300 kHz Frequency and >95% Efficiency
30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle
High-Accuracy Voltage and Current Regulation
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- ±3% Adapter Current Accuracy
- ±2% Input Current Sense Amp Accuracy
Integration
- Automatic System Power Selection From AC/DC Adapter or Battery
- Internal Loop Compensation
- Internal Soft Start
Safety
- Programmable Input Overvoltage Protection (OVP)
- Fast Dynamic Power Management (DPM)
- Programmable Inrush Adapter Power (ACOP) and Overcurrent (ACOC) Limits
- Reverse-Conduction Protection Input FET
Supports Two, Three, or Four Li+ Cells
8 – 24 V AC/DC-Adapter Operating Range
Analog Inputs with Ratiometric Programming via Resistors or DAC/GPIO Host Control
- Charge Voltage (4-4.512 V/cell)
- Charge Current (up to 10 A, with 10-mΩ)
- Adapter Current Limit (DPM)
Status and Monitoring Outputs
- Adapter Present with Programmable Voltage Threshold
- Current Drawn from Input Source
Battery Learn Cycle Control
Charge Enable
28-pin, 5x5-mm VQFN package
Energy Star Low Iq
- < 10 μA Off-State Battery Discharge Current
- < 1.5 mA Off-State Input Quiescent Current

产品应用

Notebook, Netbook and Ultra-Mobile Computers
Portable Data Capture Terminals
Portable Printers
Medical Diagnostics Equipment
Battery Bay Chargers
Battery Back-up Systems

产品说明

The bq24753A is a high-efficiency, synchronous battery charger with integrated compensation and system power selector logic, offering low component count for space-constrained Li-Ion and Li-Polymer battery charging applications. Ratiometric charge current and voltage programming allows for high regulation accuracies, and can be either hardwired with resistors or programmed by the system power-management microcontroller using a DAC or GPIOs.

The bq24753A charges two, three, or four series Li+ cells, supporting up to 10 A of charge current, and is available in a 28-pin, 5x5-mm thin VQFN package.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
bq24753A	VQFN (28)	5.00 mm × 5.00 mm

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