BQ24735 - 用于支持 Turbo 升压模式的 1 到 4 节锂离子电池 SMBus 充电控制器

BQ24735是TI德州仪器公司的一款电池充电器IC产品，BQ24735是用于支持 Turbo 升压模式的 1 到 4 节锂离子电池 SMBus 充电控制器，本站介绍了BQ24735的封装应用图解、特点和优点、功能等，并给出了与BQ24735相关的TI元器件型号供参考。

BQ24735 - 用于支持 Turbo 升压模式的 1 到 4 节锂离子电池 SMBus 充电控制器 - 电池充电器IC - 电池管理产品 - 德州仪器

产品特性

Adapter and Battery Provide Power to System Together to Support Intel® CPU Turbo Boost Mode
SMBus Host-Controlled NMOS-NMOS Synchronous Buck Converter With Programmable 615-, 750-, and 885-kHz Switching Frequencies
Automatic N-Channel MOSFET Selection of System Power Source From Adapter or Battery Driven by Internal Charge Pumps
Enhanced Safety Features for Overvoltage Protection, Overcurrent Protection, Battery, Inductor and MOSFET Short-Circuit Protection
Programmable Input Current, Charge Voltage, Charge Current Limits
- ±0.5% Charge Voltage Accuracy up to 19.2 V
- ±3% Charge Current Accuracy up to 8.128 A
- ±3% Input Current Accuracy up to 8.064 A
- ±2% 20× Adapter Current or Charge Current Amplifier Output Accuracy
Programmable Battery Depletion Threshold, and Battery LEARN Function
Programmable Adapter Detection and Indicator
Integrated Loop Compensation and Soft Start
Real-Time System Control on ILIM Pin to Limit Charge Current
AC Adapter Operating Range: 4.5 V to 24 V
5-µA Off-State Battery Discharge Current
0.65 mA (0.8 mA Max) Adapter Standby Quiescent Current

产品应用

Portable Notebook Computers, UMPC, Ultra-Thin Notebooks, and Netbooks
Handheld Terminals
Industrial and Medical Equipment
Portable Equipment

产品说明

The bq24735 device is a high-efficiency, synchronous battery charger, offering low component count for space-constrained, multichemistry battery charging applications. The bq24735 device supports turbo boost by allowing battery discharge energy to the system when system power demand is temporarily higher than the adapter maximum power level so the adapter will not crash.

The bq24735 device uses two charge pumps to separately drive N-channel MOSFETs (ACFET, RBFET, and BATFET) for automatic system power source selection.

SMBus controlled input current, charge current, and charge voltage digital-to-analog converters (DACs) allow for very high-regulation accuracies that can be easily programmed by the system power management microcontroller.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
bq24735	VQFN (20)	3.50 mm × 3.50 mm

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