- BQ24640RVAR
- 参考价格:
- 发布者:凌晔科技
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详细信息
品牌:TI德州
封装:QFN-16
批号:18+
数量*:800000
描述: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 and PG output 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.
产品特性
Charge Super Capacitor Pack From 2.1 V to 26 V
CC/CV Charge Profile From 0 V Without
Precharge
600-kHz NMOS-NMOS Synchronous Buck
Controller
Over 90% Efficiency for up to 10-A Charge
Current
5-V to 28-V VCC Input Voltage Range
Accuracy
±0.5% Charge Voltage Regulation
±3% Charge Current Regulation
±0.5% Charge Voltage Regulation
±3% Charge Current Regulation
High Integration
Internal Loop Compensation
Internal Digital Soft Start
Internal Loop Compensation
Internal Digital Soft Start
Safety
Input Overvoltage Protection
Capacitor Temperature Sensing Hot and Cold
Charge Suspend
Thermal Shutdown
Input Overvoltage Protection
Capacitor Temperature Sensing Hot and Cold
Charge Suspend
Thermal Shutdown
Status Outputs
Adapter Present
Charger Operation Status
Adapter Present
Charger Operation Status
Charge Enable Pin
30-ns Driver Dead Time and 99.5% Maximum
Effective Duty Cycle
Automatic Sleep Mode for Low Power
Consumption
<15-μA Off-State Super Capacitor Discharge
Current
<1.5-mA Off-State Input Quiescent Current
<15-μA Off-State Super Capacitor Discharge
Current
<1.5-mA Off-State Input Quiescent Current
APPLICATIONS
Memory Backup Systems
Industrial UPS Systems and Power Transient Buffering
Bridge Power to Buffer the Battery
Memory Backup Systems
Industrial UPS Systems and Power Transient Buffering
Bridge Power to Buffer the Battery
深圳市凌晔科技有限公司
广东省深圳市福田区华强广场C座13L
TEL:13544017528
qq: 869030400
E-mail:869030400@qq.com
封装:QFN-16
批号:18+
数量*:800000
描述: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 and PG output 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.
产品特性
Charge Super Capacitor Pack From 2.1 V to 26 V
CC/CV Charge Profile From 0 V Without
Precharge
600-kHz NMOS-NMOS Synchronous Buck
Controller
Over 90% Efficiency for up to 10-A Charge
Current
5-V to 28-V VCC Input Voltage Range
Accuracy
±0.5% Charge Voltage Regulation
±3% Charge Current Regulation
±0.5% Charge Voltage Regulation
±3% Charge Current Regulation
High Integration
Internal Loop Compensation
Internal Digital Soft Start
Internal Loop Compensation
Internal Digital Soft Start
Safety
Input Overvoltage Protection
Capacitor Temperature Sensing Hot and Cold
Charge Suspend
Thermal Shutdown
Input Overvoltage Protection
Capacitor Temperature Sensing Hot and Cold
Charge Suspend
Thermal Shutdown
Status Outputs
Adapter Present
Charger Operation Status
Adapter Present
Charger Operation Status
Charge Enable Pin
30-ns Driver Dead Time and 99.5% Maximum
Effective Duty Cycle
Automatic Sleep Mode for Low Power
Consumption
<15-μA Off-State Super Capacitor Discharge
Current
<1.5-mA Off-State Input Quiescent Current
<15-μA Off-State Super Capacitor Discharge
Current
<1.5-mA Off-State Input Quiescent Current
APPLICATIONS
Memory Backup Systems
Industrial UPS Systems and Power Transient Buffering
Bridge Power to Buffer the Battery
Memory Backup Systems
Industrial UPS Systems and Power Transient Buffering
Bridge Power to Buffer the Battery
深圳市凌晔科技有限公司
广东省深圳市福田区华强广场C座13L
TEL:13544017528
qq: 869030400
E-mail:869030400@qq.com
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