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BQ24741RHDT

BQ24741RHDT

TI(德州仪器) 主动器件

锂离子或锂聚合物电池充电器具有低Iq和准确的涓流充电 Li-Ion or Li-Polymer Battery Charger with Low Iq and Accurate Trickle Charge

DESCRIPON

The bq24741/2 is a high-efficiency, synchronous battery charger with integrated compensation, offering low component count for space-constrained Li-ion or Li-polymer battery charging applications. Ratiometric charge current and voltage programming allows high regulation accuracies, and can be either hardwired with resistors or programmed by the system power-management microcontroller using a DAC or GPIOs.

The bq24741/2 charges two, three, or four series Li+ cells, supporting up to 10 A of charge current, and is available in a 28-pin, 5x5-mm2 thin QFN package.

FEATURES

• NMOS-NMOS Synchronous Buck Converter

• Resistor-Programmable Switching Frequency between 300 kHz and 800 kHz

• 9 V-24 V Input Voltage Operation Range

• Support Two to Four Cells

• Analog Inputs with Ratiometric Programming via Resistors or DAC/GPIO

   – Charge Voltage 4-4.512 V/cell

   – Charge Current up to 10 A

   – Adapter Current Limit for DPM

• High-Accuracy Voltage and Current Regulation

   – ±0.5% Charge Voltage Accuracy

   – ±3% Charge Current Accuracy

   – ±3% Adapter Current Accuracy

   – ±2% Input Current Sense Amp Accuracy

• 150 mA Trickle-charge Current with ±33% Accuracy Down to Zero Battery Voltage

• Safety Protection

   – Input Overvoltage Protection

   – Battery Overvoltage Protection

   – Charger Overcurrent Protection

   – Thermal Shutdown Protection

   – FET/Inductor/Battery Short Protection

• Status and Monitoring Outputs

   – Adapter Present Indicator

   – Programmable Input Power Detect with Adjustable Threshold

   – Dynamic Power Management DPM with Status Indicator

   – Current Drawn from Input Source

• Charge Enable Pin

• Internal Soft-Start and Loop Compensation

• 25 ns Minimum Driver Dead-Time and 99.5% Maximum Effective Duty Cycle

• 28-pin, 5x5-mm2 QFN package

• Energy Star Low Quiescent Current Iq

   – < 10 μA Off-State Battery Discharge Current

   – < 1.5 mA Off-State Input Quiescent Current

APPLICATIONS

• Notebook and Ultra-Mobile PC

• Portable Data Capture Terminals

• Portable Printers

• Medical Diagnostics Equipment

• Battery Bay Chargers

• Battery Back-up Systems

BQ24741RHDT中文资料参数规格
技术参数

输出电压 18 V

开关频率 800 kHz

工作温度Max 125 ℃

工作温度Min -40 ℃

电源电压 9 V

封装参数

安装方式 Surface Mount

引脚数 28

封装 VQFN-28

外形尺寸

封装 VQFN-28

物理参数

工作温度 -40℃ ~ 125℃ TJ

其他

产品生命周期 Active

包装方式 Tape & Reel TR

符合标准

RoHS标准 RoHS Compliant

含铅标准 Lead Free

BQ24741RHDT引脚图与封装图
BQ24741RHDT引脚图

BQ24741RHDT引脚图

BQ24741RHDT封装图

BQ24741RHDT封装图

BQ24741RHDT封装焊盘图

BQ24741RHDT封装焊盘图

在线购买BQ24741RHDT
型号 制造商 描述 购买
BQ24741RHDT TI 德州仪器 锂离子或锂聚合物电池充电器具有低Iq和准确的涓流充电 Li-Ion or Li-Polymer Battery Charger with Low Iq and Accurate Trickle Charge 搜索库存
替代型号BQ24741RHDT
图片 型号/品牌/封装 代替类型 描述 替代型号对比

型号: BQ24741RHDT

品牌: TI 德州仪器

封装: 28VQFN

当前型号

锂离子或锂聚合物电池充电器具有低Iq和准确的涓流充电 Li-Ion or Li-Polymer Battery Charger with Low Iq and Accurate Trickle Charge

当前型号

型号: BQ24741RHDR

品牌: 德州仪器

封装: 28VQFN

完全替代

锂离子或锂聚合物电池充电器具有低Iq和准确的涓流充电 Li-Ion or Li-Polymer Battery Charger with Low Iq and Accurate Trickle Charge

BQ24741RHDT和BQ24741RHDR的区别

型号: BQ24745RHDR

品牌: 德州仪器

封装: VQFN-28 24V 28Pin

类似代替

的SMBus控制的2级多化合物电池充电器输入电流检测比较器 SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Comparator

BQ24741RHDT和BQ24745RHDR的区别

型号: BQ24745RHDTG4

品牌: 德州仪器

封装: VQFN 28Pin

类似代替

具有输入电流检测比较器的 SMBus 控制的 2 级多化合物电池充电器 28-VQFN 0 to 0

BQ24741RHDT和BQ24745RHDTG4的区别