BQ24120 Series
Standalone 1-2 cell 2A synchronous Buck battery charger with enhanced EMI performance
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Standalone 1-2 cell 2A synchronous Buck battery charger with enhanced EMI performance
| Part | Battery Pack Voltage | Fault Protection | Package / Case | Number of Cells | Voltage - Supply (Max) [Max] | Current - Charging | Battery Chemistry | Programmable Features | Charge Current - Max [Max] | Operating Temperature [Max] | Operating Temperature [Min] | Mounting Type | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24120RHLT | 4.2 V | Over Temperature | 20-VFQFN Exposed Pad | 1 | 16 V | Constant - Programmable | Lithium Ion/Polymer | Current, Timer | 2 A | 85 °C | -40 °C | Surface Mount | 20-VQFN (3.5x4.5) |
Texas Instruments BQ24120RHLR | 4.2 V | Over Temperature | 20-VFQFN Exposed Pad | 1 | 16 V | Constant - Programmable | Lithium Ion/Polymer | Current, Timer | 2 A | 85 °C | -40 °C | Surface Mount | 20-VQFN (3.5x4.5) |
Texas Instruments BQ24120RHLTG4 | 4.2 V | Over Temperature | 20-VFQFN Exposed Pad | 1 | 16 V | Constant - Programmable | Lithium Ion/Polymer | Current, Timer | 2 A | 85 °C | -40 °C | Surface Mount | 20-VQFN (3.5x4.5) |
Texas Instruments BQ24120RHLRG4 | 4.2 V | Over Temperature | 20-VFQFN Exposed Pad | 1 | 16 V | Constant - Programmable | Lithium Ion/Polymer | Current, Timer | 2 A | 85 °C | -40 °C | Surface Mount | 20-VQFN (3.5x4.5) |
Key Features
• Enhanced EMI PerformanceIntegrated Power FETs For Up To 2-A ChargeRateSuitable For 1-, 2-, or 3-Cell Li-Ion and Li-PolymerBattery PacksSynchronous Fixed-Frequency PWM ControllerOperating at 1.1 MHz With 0% to 100% DutyCycleHigh-Accuracy Voltage and Current RegulationStatus Outputs For LED or Host ProcessorInterface Indicates Charge-In-Progress, ChargeCompletion, Fault, and AC-Adapter PresentConditions20-V Absolute Maximum Voltage Rating on IN andOUT PinsAccurate High-Side Battery Current SensingBattery Temperature MonitoringAutomatic Sleep Mode for Low PowerConsumptionReverse Leakage Protection Prevents BatteryDrainageThermal Shutdown and ProtectionBuilt-In Battery DetectionAvailable in 20-pin 3.5-mm × 4.5-mm VQFNPackageEnhanced EMI PerformanceIntegrated Power FETs For Up To 2-A ChargeRateSuitable For 1-, 2-, or 3-Cell Li-Ion and Li-PolymerBattery PacksSynchronous Fixed-Frequency PWM ControllerOperating at 1.1 MHz With 0% to 100% DutyCycleHigh-Accuracy Voltage and Current RegulationStatus Outputs For LED or Host ProcessorInterface Indicates Charge-In-Progress, ChargeCompletion, Fault, and AC-Adapter PresentConditions20-V Absolute Maximum Voltage Rating on IN andOUT PinsAccurate High-Side Battery Current SensingBattery Temperature MonitoringAutomatic Sleep Mode for Low PowerConsumptionReverse Leakage Protection Prevents BatteryDrainageThermal Shutdown and ProtectionBuilt-In Battery DetectionAvailable in 20-pin 3.5-mm × 4.5-mm VQFNPackage
Description
AI
The bqSWITCHER™ series are highly integrated Li-ion and Li-polymer switched-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 switched-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.