BQ24620 Series

Standalone 1-7 cell Buck battery charge controller for Lithium phosphate batteries

Catalog

Standalone 1-7 cell Buck battery charge controller for Lithium phosphate batteries

Part	Battery Chemistry	Supplier Device Package	Voltage - Supply (Max) [Max]	Charge Current - Max [Max]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Battery Pack Voltage [Max]	Package / Case	Fault Protection	Current - Charging	Number of Cells [Max] [custom]	Number of Cells [Min] [custom]	Secondary Attributes	Type	Primary Attributes	Primary Attributes [Max]	Function	Supplied Contents	Utilized IC / Part
Texas Instruments BQ24620RVAT	Lithium Iron Phosphate	16-VQFN (3.5x3.5)	28 V	10 A	Surface Mount	85 °C	-40 °C	26 V	16-VFQFN Exposed Pad	Over Current Over Temperature Over Voltage Short Circuit	Constant - Programmable	7	1
Texas Instruments BQ24620EVM														On-Board LEDs	Power Management	Multi Cell-Li-ion / Li-Polymer	26 V	Battery Charger	Board(s)	BQ24620
Texas Instruments BQ24620RVAR	Lithium Iron Phosphate	16-VQFN (3.5x3.5)	28 V	10 A	Surface Mount	85 °C	-40 °C	26 V	16-VFQFN Exposed Pad	Over Current Over Temperature Over Voltage Short Circuit	Constant - Programmable	7	1

Catalog

Standalone 1-7 cell Buck battery charge controller for Lithium phosphate batteries

Key Features

• 300-kHz NMOS-NMOS Synchronous BuckConverterStand-Alone Charger Designed Specifically forLithium Phosphate5-V to 28-V VCC Operating Range, Supports 1 to7 Battery CellsHigh-Accuracy Voltage and Current Regulation±0.5% Charge Voltage Accuracy±3% Charge Current AccuracyIntegrationInternal Loop CompensationInternal Soft StartSafetyInput Overvoltage ProtectionBattery Thermistor Sense Suspend Charge atHot/Cold Charge Suspend and AutomaticallyICHARGE/8 at WARM/COOLBattery DetectionBuilt-In Safety TimerCharge Overcurrent ProtectionBattery Short ProtectionBattery Overvoltage ProtectionThermal ShutdownStatus OutputsAdapter PresentCharger Operation StatusCharge Enable Pin6-V Gate Drive for Synchronous Buck Converter30-ns Driver Dead Time and 99.95% MaximumEffective Duty Cycle16-Pin 3.5-mm × 3.5-mm QFN PackageEnergy Star Low Iq< 15-µA Off-State Battery Discharge Current< 1.5-mA Off-State Input Quiescent CurrentAPPLICATIONSPower Tools and Portable EquipmentPersonal Digital AssistantsHandheld TerminalsIndustrial and Medical EquipmentNetbooks, Mobile Internet Devices, andUltramobile PCsAll other trademarks are the property of their respective owners300-kHz NMOS-NMOS Synchronous BuckConverterStand-Alone Charger Designed Specifically forLithium Phosphate5-V to 28-V VCC Operating Range, Supports 1 to7 Battery CellsHigh-Accuracy Voltage and Current Regulation±0.5% Charge Voltage Accuracy±3% Charge Current AccuracyIntegrationInternal Loop CompensationInternal Soft StartSafetyInput Overvoltage ProtectionBattery Thermistor Sense Suspend Charge atHot/Cold Charge Suspend and AutomaticallyICHARGE/8 at WARM/COOLBattery DetectionBuilt-In Safety TimerCharge Overcurrent ProtectionBattery Short ProtectionBattery Overvoltage ProtectionThermal ShutdownStatus OutputsAdapter PresentCharger Operation StatusCharge Enable Pin6-V Gate Drive for Synchronous Buck Converter30-ns Driver Dead Time and 99.95% MaximumEffective Duty Cycle16-Pin 3.5-mm × 3.5-mm QFN PackageEnergy Star Low Iq< 15-µA Off-State Battery Discharge Current< 1.5-mA Off-State Input Quiescent CurrentAPPLICATIONSPower Tools and Portable EquipmentPersonal Digital AssistantsHandheld TerminalsIndustrial and Medical EquipmentNetbooks, Mobile Internet Devices, andUltramobile PCsAll other trademarks are the property of their respective owners

Description

The bq24620 device 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, and charge status monitoring. The bq24620 charges the battery in three phases: preconditioning, constant current, and constant voltage. The bq24620 device 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, and charge status monitoring. The bq24620 charges the battery in three phases: preconditioning, constant current, and constant voltage.