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电池充电器 IC

BQ24070

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具有电源路径、稳压输出为 4.4V 的单节 2A 锂离子线性电池充电器

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BQ25185 正在供货 具有电源路径和太阳能输入支持的单芯 1A 独立线性电池充电器 BQ25185 comes with wider Vin, higher battery discharge and solar input support.

BQ24070

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产品详情

Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 1.5 Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Power Path Vin (min) (V) 4.35 Vin (max) (V) 16 Absolute max Vin (max) (V) 18 Control topology Linear Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Control interface Standalone (RC-Settable) Operating temperature range (°C) -40 to 85
Rating Catalog Number of series cells 1 Cell chemistry Li-Ion/Li-Polymer Charge current (max) (A) 1.5 Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Power Path Vin (min) (V) 4.35 Vin (max) (V) 16 Absolute max Vin (max) (V) 18 Control topology Linear Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Control interface Standalone (RC-Settable) Operating temperature range (°C) -40 to 85
VQFN (RHL) 20 15.75 mm² (4.5 mm × 3.5 mm)
  • Small 3.5-mm × 4.5-mm VQFN Package
  • Designed for Single-Cell Li-Ion- or Li-Polymer-
    Based Portable Applications
  • Integrated Dynamic Power-Path Management (DPPM)
    Feature Allowing the AC Adapter to Simultaneously
    Power the System and Charge the Battery
  • Power Supplement Mode Allows Battery to Supplement
    the AC Input Current
  • Autonomous Power Source Selection (AC Adapter
    or BAT)
  • Supports Up to 2 A Total Current
  • Thermal Regulation for Charge Control
  • Charge Status Outputs for LED or System Interface
    Indicates Charge and Fault Conditions
  • Reverse Current, Short-Circuit, and Thermal
    Protection
  • Power Good Status Outputs
  • 4.4-V and 6-V Options for System Output Regulation
    Voltage
  • Small 3.5-mm × 4.5-mm VQFN Package
  • Designed for Single-Cell Li-Ion- or Li-Polymer-
    Based Portable Applications
  • Integrated Dynamic Power-Path Management (DPPM)
    Feature Allowing the AC Adapter to Simultaneously
    Power the System and Charge the Battery
  • Power Supplement Mode Allows Battery to Supplement
    the AC Input Current
  • Autonomous Power Source Selection (AC Adapter
    or BAT)
  • Supports Up to 2 A Total Current
  • Thermal Regulation for Charge Control
  • Charge Status Outputs for LED or System Interface
    Indicates Charge and Fault Conditions
  • Reverse Current, Short-Circuit, and Thermal
    Protection
  • Power Good Status Outputs
  • 4.4-V and 6-V Options for System Output Regulation
    Voltage

The bq24070 and bq24071 are highly integrated Li-ion linear charger and system power-path management devices targeted at space-limited portable applications. The bq2407x devices offer DC supply (AC adapter) power-path management with autonomous power-source selection, power FETs and current sensors, high-accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device.

The bq2407x devices power the system while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination, and allows the system to run with an absent or defective battery pack. This feature also allows for the system to instantaneously turn on from an external power source in the case of a deeply discharged battery pack. The IC design is focused on supplying continuous power to the system when available from the AC adapter or battery sources.

The bq24070 and bq24071 are highly integrated Li-ion linear charger and system power-path management devices targeted at space-limited portable applications. The bq2407x devices offer DC supply (AC adapter) power-path management with autonomous power-source selection, power FETs and current sensors, high-accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device.

The bq2407x devices power the system while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination, and allows the system to run with an absent or defective battery pack. This feature also allows for the system to instantaneously turn on from an external power source in the case of a deeply discharged battery pack. The IC design is focused on supplying continuous power to the system when available from the AC adapter or battery sources.
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BQ24072 正在供货 具有电源路径、4.2V VBAT 和 VOUT=VBAT + 225mV 的独立型单节 1.5A 线性电池充电器 This product is a 1.5-A, standalone, single-cell Li-Ion battery charger with power path in a 3x3mm package.

技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 bq2407x Single-Chip Li-Ion Charge and System Power-Path Management IC 数据表 (Rev. G) PDF | HTML 2014-12-23
应用手册 使用基于电流的电池 NTC 温度检测功能来设计电池充电器的 TS 引脚网络 PDF | HTML PDF | HTML 2026-7-7
应用手册 Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) 2018-5-1
模拟设计期刊 2Q 2016 Analog Applications Journal Issue 2016-4-26
模拟设计期刊 Battery-charging considerations for low-power applications 2016-4-26
应用手册 Selecting the Best bq2407x/23x Single Cell Battery Charger for your Application 2012-11-8
模拟设计期刊 Q1 2009 Issue Analog Applications Journal 2009-3-11
模拟设计期刊 Improving Battery Safety, Charging, and Fuel Gauging in Portable Media Apps 2009-3-11
用户指南 Power-Path Li-Ion Charger Selection 2008-10-17
用户指南 bq24070 1.5-A Single-Chip Li-Ion & Li-Pol Charge Mgmt IC (Rev. A) 2006-8-30

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评估板

BQ24070EVM — BQ24070 评估模块

The Texas Instruments bq24070EVM is the evaluation module (EVM) for the bq24070 Single-Chip Charge and Dynamic Power-Path Management IC in 3.5x4.5 mm2 QFN package. The EVM is a complete bq24070 based circuit and provides a convenient method to evaluate the operation and performance of the IC.

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