返回页首

产品详细信息

参数

Number of series cells 1 Charge current (Max) (A) 1.5 Operating Vin (Max) (V) 16 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 4.1 Battery charge voltage (Max) (V) 4.1 Absolute Vin (safety rating) (Max) ((V)) 18 Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), Integrated LDO, Power Path Operating Vin (Min) (V) 4.35 Rating Automotive open-in-new 查找其它 电池充电器 IC

封装|引脚|尺寸

VQFN (RHL) 20 16 mm² 3.5 x 4.5 open-in-new 查找其它 电池充电器 IC

特性

  • Qualified for Automotive Applications
  • Small 3.5-mm × 4.5-mm QFN Package
  • Designed for Single-Cell Li-Ion or Li-Polymer-Based Portable Applications
  • Integrated Dynamic Power-Path Management (DPPM) Feature Allowing AC Adapter or USB Port to Simultaneously Power the System and Charge the Battery
  • Power Supplement Mode Allows Battery to Supplement USB or AC Input Current
  • Autonomous Power Source Selection (AC Adapter or USB)
  • Integrated USB Charge Control With Selectable 100-mA and 500-mA Maximum Input Current Regulation Limits
  • Dynamic Total Current Management for USB
  • Supports up to 2-A Total Current
  • 3.3-V Integrated LDO Output
  • 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 (AC Adapter and USB Port Present) Status Outputs
  • Charge Voltage: 4.1 V or 4.2 V
  • APPLICATIONS
    • Smart Phones and PDAs
    • MP3 Players
    • Digital Cameras
    • Handheld Devices
    • Internet Appliances
open-in-new 查找其它 电池充电器 IC

描述

The bqTINY™ III series of devices are highly integrated Li-ion linear chargers and system power-path management devices targeted at space-limited portable applications. The bqTINY III series offer integrated USB-port and 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 bqTINY III series powers 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, USB, or battery sources.

The power select pin (PSEL) defines which input source is to be used first (primary source is either AC or USB). If the primary source is not available, then the IC automatically switches over to the secondary source (if available) or the battery as the last option. If the PSEL is set low, the USB input is selected first and (if not available) the AC line is selected (if available) but programmed to a USB input limiting rate (100 mA/500 mA max). This feature allows the use of one input connector, where the host programs the PSEL pin according to what source is connected (AC adapter or USB port).

The ISET1 pin programs the battery's fast-charge constant current level with a resistor. During normal AC operation, the input supply provides power to both the OUT (system) and BAT pins. For peak or excessive loads (typically when operating from the USB power, PSEL = low) that would cause the input source to enter current limit (or Q3 – USB FET limiting current) and its source and system voltage (OUT pin) to drop, the dynamic power-path management (DPPM) feature reduces the charging current attempting to prevent any further drop in system voltage. This feature allows the selection of a lower current rated adapter based on the average load (ISYS-AVG + IBAT-PGM), rather than a high peak transient load.

open-in-new 查找其它 电池充电器 IC
下载
您可能感兴趣的类似产品
open-in-new 产品比较
功能与比较器件相似。
BQ24075-Q1 正在供货 具有电源路径、符合汽车标准的 4.2V VBAT 独立型单节 1.5A 线性电池充电器 This product is an automotive qualified, single input, 1.5-A, standalone, single-cell Li-Ion battery charger with power path
BQ25171-Q1 正在供货 适用于 1-2 节锂离子、磷酸铁锂和 1-6 节镍氢电池的汽车类 800mA 线性电池充电器 This product is an automotive 800-mA Linear Battery Charger for single and multicell Li-ion, LiFePO4 and NiMH

技术文档

star = TI 精选相关文档
未找到结果。请清除搜索,并重试。
查看所有 5
类型 标题 下载最新的英文版本 日期
* 数据表 Single-Chip Charge and System Power-Path Management IC 数据表 (Rev. B) 2009年 10月 6日
技术文章 When to use rechargeable batteries in small battery applications 2019年 10月 1日
应用手册 Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) 2018年 5月 1日
技术文章 Should I use a linear charger or a switching charger? 2015年 10月 31日
技术文章 Summertime and the livin' is easy 2014年 6月 20日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

硬件开发

评估板 下载
document-generic 用户指南
49
说明

The EVM provides a convenient method for evaluating the performance of a charge management and system power solution for portable applications using the bq24031. A fully designed and tested module is presented. The bq24030/1 has a LDO 6 V regulator connected to the OUT pin. The intent of this (...)

CAD/CAE 符号

封装 引脚 下载
VQFN (RHL) 20 了解详情

订购与质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/FIT 估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

支持与培训

可获得 TI E2E™ 论坛的工程师技术支持

所有内容均由 TI 和社区网友按“原样”提供,并不构成 TI 规范。参阅使用条款

如果您对质量、包装或订购 TI 产品有疑问,请参阅 TI 支持

视频