Bq24735 datasheet: BQ24735 data sheet, product information and support

Содержание

HPA02196RGRR TI Интегральные схемы (ИС)

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.

The bq24735 device uses an internal input current register or an external ILIM pin to throttle down PWM modulation to reduce the charge current. The bq24735 device charges 1-, 2-, 3-, or 4-series Li+ cells.

Особенность

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 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

Description

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

(Картинка: Diagram)

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Микросхема BQ24735 Тип: микросхема, Производитель: Texas Instruments