BQ24640 Series
Standalone 1-8 cell Buck battery charge controller for super capacitor
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Standalone 1-8 cell Buck battery charge controller for super capacitor
| Part | Voltage - Supply [Max] | Voltage - Supply [Min] | Operating Temperature [Min] | Operating Temperature [Max] | Mounting Type | Applications | Current - Supply | Supplier Device Package [x] | Supplier Device Package [y] | Supplier Device Package | Package / Case | Contents | Embedded | Primary Attributes | Primary Attributes | Utilized IC / Part | Function | Secondary Attributes | Supplied Contents | Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ24640RVAT | 28 V | 5 V | -40 °C | 85 °C | Surface Mount | Supercapacitor Charger | 1 mA | 3.5 | 3.5 | 16-VQFN | 16-VFQFN Exposed Pad | |||||||||
Texas Instruments BQ24640EVM | Board(s) | 26 V | Multi Cell-Li-ion / Li-Polymer | BQ24640 | Battery Charger | On-Board LEDs | Board(s) | Power Management |
Key Features
• Charge Super Capacitor Pack From 2.1 V to 26 VCC/CV Charge Profile From 0 V WithoutPrecharge600-kHz NMOS-NMOS Synchronous BuckControllerOver 90% Efficiency for up to 10-A ChargeCurrent5-V to 28-V VCC Input Voltage RangeAccuracy±0.5% Charge Voltage Regulation±3% Charge Current RegulationHigh IntegrationInternal Loop CompensationInternal Digital Soft StartSafetyInput Overvoltage ProtectionCapacitor Temperature Sensing Hot and ColdCharge SuspendThermal ShutdownStatus OutputsAdapter PresentCharger Operation StatusCharge Enable Pin30-ns Driver Dead Time and 99.5% MaximumEffective Duty CycleAutomatic Sleep Mode for Low PowerConsumption<15-µA Off-State Super Capacitor DischargeCurrent<1.5-mA Off-State Input Quiescent CurrentAPPLICATIONSMemory Backup SystemsIndustrial UPS Systems and Power Transient BufferingBridge Power to Buffer the BatteryAll other trademarks are the property of their respective ownersCharge Super Capacitor Pack From 2.1 V to 26 VCC/CV Charge Profile From 0 V WithoutPrecharge600-kHz NMOS-NMOS Synchronous BuckControllerOver 90% Efficiency for up to 10-A ChargeCurrent5-V to 28-V VCC Input Voltage RangeAccuracy±0.5% Charge Voltage Regulation±3% Charge Current RegulationHigh IntegrationInternal Loop CompensationInternal Digital Soft StartSafetyInput Overvoltage ProtectionCapacitor Temperature Sensing Hot and ColdCharge SuspendThermal ShutdownStatus OutputsAdapter PresentCharger Operation StatusCharge Enable Pin30-ns Driver Dead Time and 99.5% MaximumEffective Duty CycleAutomatic Sleep Mode for Low PowerConsumption<15-µA Off-State Super Capacitor DischargeCurrent<1.5-mA Off-State Input Quiescent CurrentAPPLICATIONSMemory Backup SystemsIndustrial UPS Systems and Power Transient BufferingBridge Power to Buffer the BatteryAll other trademarks are the property of their respective owners
Description
AI
The bq24640 device is a highly integrated switched-mode super capacitor charge controller. The device offers a constant-frequency synchronous PWM controller with high accuracy charge current, voltage regulation, and charge status monitoring.
The bq24640 charges a super capacitor in two phases: constant current and constant voltage (CC/CV). The device can charge super capacitors from 0 V with current set on the ISET pin. When the super capacitor voltage reaches the programmed target voltage, charge current begins tapering down.
The bq24640 enters a low-current sleep mode(<15 µA) when the input voltage falls below the output capacitor voltage.
The bq24640 has an input CE pin to enable and disable charge, and the STAT andPGoutput pins report charge and adapter status. The TS pin on the bq24640 monitors the temperature of the capacitor and suspends charge during hot and cold conditions.
The bq24640 device is a highly integrated switched-mode super capacitor charge controller. The device offers a constant-frequency synchronous PWM controller with high accuracy charge current, voltage regulation, and charge status monitoring.
The bq24640 charges a super capacitor in two phases: constant current and constant voltage (CC/CV). The device can charge super capacitors from 0 V with current set on the ISET pin. When the super capacitor voltage reaches the programmed target voltage, charge current begins tapering down.
The bq24640 enters a low-current sleep mode(<15 µA) when the input voltage falls below the output capacitor voltage.
The bq24640 has an input CE pin to enable and disable charge, and the STAT andPGoutput pins report charge and adapter status. The TS pin on the bq24640 monitors the temperature of the capacitor and suspends charge during hot and cold conditions.