BQ24105-Q1 Series

Standalone automotive 1-3 cell 2A Buck battery charger

Catalog

Standalone automotive 1-3 cell 2A Buck battery charger

Part	Battery Chemistry	Current - Charging	Programmable Features	Voltage - Supply (Max) [Max]	Supplier Device Package	Package / Case	Fault Protection	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Battery Pack Voltage	Charge Current - Max [Max]	Number of Cells [Min]	Number of Cells [Max]	Qualification	Grade
Texas Instruments BQ24105RHLR	Multi-Chemistry	Constant - Programmable	Current Timer	16 V	20-VQFN (3.5x4.5)	20-VFQFN Exposed Pad	Over Temperature Over Voltage	Surface Mount	85 °C	-40 °C	15.5 V	2 A	1	3 cells
Texas Instruments BQ24105IRHLRQ1	Lithium Ion/Polymer	Constant - Programmable	Current Timer	16 V	20-VQFN (3.5x4.5)	20-VFQFN Exposed Pad	Over Temperature Over Voltage	Surface Mount	85 °C	-40 °C	12.6 V	2 A	1	3 cells	AEC-Q100	Automotive

Catalog

Standalone automotive 1-3 cell 2A Buck battery charger

Key Features

• Qualified for Automotive ApplicationsIdeal For Highly Efficient Charger Designs ForSingle-, Two-, or Three-Cell Li-Ion and Li-PolymerBattery PacksAlso for LiFePO4Battery (see Using bq24105 to Charge LiFePO4 Battery)Integrated Synchronous Fixed-Frequency PWM Controller Operating at 1.1 MHzWith 0% to 100% Duty CycleIntegrated Power FETs For Up To 2-A Charge RateHigh-Accuracy Voltage and Current RegulationStand-Alone (Built-In Charge Management and Control) VersionStatus Outputs For LED or Host Processor Interface Indicates Charge-In-Progress,Charge Completion, Fault, and AC-Adapter Present Conditions20-V Maximum Voltage Rating on IN and OUT PinsHigh-Side Battery Current SensingBattery Temperature MonitoringAutomatic Sleep Mode for Low Power ConsumptionReverse Leakage Protection Prevents Battery DrainageThermal Shutdown and ProtectionBuilt-In Battery DetectionAvailable in 20-Pin, 3.5 mm × 4.5 mm, QFN PackageAll trademarks are the property of their respective owners.Qualified for Automotive ApplicationsIdeal For Highly Efficient Charger Designs ForSingle-, Two-, or Three-Cell Li-Ion and Li-PolymerBattery PacksAlso for LiFePO4Battery (see Using bq24105 to Charge LiFePO4 Battery)Integrated Synchronous Fixed-Frequency PWM Controller Operating at 1.1 MHzWith 0% to 100% Duty CycleIntegrated Power FETs For Up To 2-A Charge RateHigh-Accuracy Voltage and Current RegulationStand-Alone (Built-In Charge Management and Control) VersionStatus Outputs For LED or Host Processor Interface Indicates Charge-In-Progress,Charge Completion, Fault, and AC-Adapter Present Conditions20-V Maximum Voltage Rating on IN and OUT PinsHigh-Side Battery Current SensingBattery Temperature MonitoringAutomatic Sleep Mode for Low Power ConsumptionReverse Leakage Protection Prevents Battery DrainageThermal Shutdown and ProtectionBuilt-In Battery DetectionAvailable in 20-Pin, 3.5 mm × 4.5 mm, QFN PackageAll trademarks are the property of their respective owners.

Description

The bqSWITCHER™ series are highly integrated Li-ion and Li-polymer switch-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER™ series offers integrated synchronous PWM controller and power FETs, high-accuracy current and voltage regulation, charge preconditioning, charge status, and charge termination, in a small, thermally enhanced QFN package. The bqSWITCHER charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on user-selectable minimum current level. A programmable charge timer provides a safety backup for charge termination. The bqSWITCHER automatically restarts the charge cycle if the battery voltage falls below an internal threshold. The bqSWITCHER automatically enters sleep mode when VCCsupply is removed. The bqSWITCHER™ series are highly integrated Li-ion and Li-polymer switch-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER™ series offers integrated synchronous PWM controller and power FETs, high-accuracy current and voltage regulation, charge preconditioning, charge status, and charge termination, in a small, thermally enhanced QFN package. The bqSWITCHER charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on user-selectable minimum current level. A programmable charge timer provides a safety backup for charge termination. The bqSWITCHER automatically restarts the charge cycle if the battery voltage falls below an internal threshold. The bqSWITCHER automatically enters sleep mode when VCCsupply is removed.