BQ24735 Series
SMBus 1-4 cell Buck battery charge controller to support turbo boost mode
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
SMBus 1-4 cell Buck battery charge controller to support turbo boost mode
| Part | Operating Temperature [Max] | Operating Temperature [Min] | Battery Chemistry | Mounting Type | Voltage - Supply (Max) [Max] | Fault Protection | Number of Cells [Max] [custom] | Number of Cells [Min] [custom] | Package / Case | Interface | Battery Pack Voltage | Utilized IC / Part | Contents | Type | Primary Attributes [Max] | Primary Attributes | Primary Attributes [Min] | Function | Embedded | Supplied Contents |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24735RGRT | 85 °C | -40 °C | Multi-Chemistry | Surface Mount | 24 V | Over Current, Over Voltage, Short Circuit | 4 | 1 | 20-VFQFN Exposed Pad | I2C | 16.8 V | |||||||||
Texas Instruments BQ24735EVM-710 | BQ24735 | Board(s) | Power Management | 4 Cells | 4 A | 1 Cells | Battery Monitor | Board(s) | ||||||||||||
Texas Instruments BQ24735RGRR | 85 °C | -40 °C | Multi-Chemistry | Surface Mount | 24 V | Over Current, Over Voltage, Short Circuit | 4 | 1 | 20-VFQFN Exposed Pad | I2C | 16.8 V |
Key Features
• Adapter and Battery Provide Power to SystemTogether to Support Intel®CPU Turbo BoostModeSMBus Host-Controlled NMOS-NMOSSynchronous Buck Converter With Programmable615-, 750-, and 885-kHz Switching FrequenciesAutomatic N-Channel MOSFET Selection ofSystem Power Source From Adapter or BatteryDriven by Internal Charge PumpsEnhanced Safety Features for OvervoltageProtection, Overcurrent Protection, Battery,Inductor and MOSFET Short-Circuit ProtectionProgrammable 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 CurrentAmplifier Output AccuracyProgrammable Battery Depletion Threshold, andBattery LEARN FunctionProgrammable Adapter Detection and IndicatorIntegrated Loop Compensation and Soft StartReal-Time System Control on ILIM Pin to LimitCharge CurrentAC Adapter Operating Range: 4.5 V to 24 V5-µA Off-State Battery Discharge Current0.65 mA (0.8 mA Max) Adapter StandbyQuiescent CurrentAdapter and Battery Provide Power to SystemTogether to Support Intel®CPU Turbo BoostModeSMBus Host-Controlled NMOS-NMOSSynchronous Buck Converter With Programmable615-, 750-, and 885-kHz Switching FrequenciesAutomatic N-Channel MOSFET Selection ofSystem Power Source From Adapter or BatteryDriven by Internal Charge PumpsEnhanced Safety Features for OvervoltageProtection, Overcurrent Protection, Battery,Inductor and MOSFET Short-Circuit ProtectionProgrammable 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 CurrentAmplifier Output AccuracyProgrammable Battery Depletion Threshold, andBattery LEARN FunctionProgrammable Adapter Detection and IndicatorIntegrated Loop Compensation and Soft StartReal-Time System Control on ILIM Pin to LimitCharge CurrentAC Adapter Operating Range: 4.5 V to 24 V5-µA Off-State Battery Discharge Current0.65 mA (0.8 mA Max) Adapter StandbyQuiescent Current
Description
AI
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.
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.