IC元器件

BQ24640RVAT

参考价格：$4.853-$6.62

Texas Instruments PMIC - 电池管理

BQ24640RVAT 供应商

BQ24640RVAT 属性参数

  • 标准包装：1
  • 类别：集成电路 (IC)
  • 家庭：PMIC - 电池管理
  • 系列：-
  • 功能：充电管理
  • 电池化学：超级电容器
  • 电源电压：5 V ~ 28 V
  • 工作温度：-40°C ~ 85°C
  • 安装类型：表面贴装
  • 封装/外壳：16-VFQFN 裸露焊盘
  • 供应商设备封装：16-VQFN 裸露焊盘（3.5x3.5）
  • 包装：®
  • 其它名称：296-32032-6

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

产品概述

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.
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BQ24640RVAT 数据手册

BQ24640RVAT 电路图

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