概览
描述
The ISL6294 is a cost-effective, fully integrated high input voltage single-cell Li-ion battery charger. The charger uses a CC/CV charge profile required by Li-ion batteries. The charger accepts an input voltage up to 28V but is disabled when the input voltage exceeds the OVP threshold, typically 6.8V, to prevent excessive power dissipation. The 28V rating eliminates the overvoltage protection circuit required in a low input voltage charger. The charge current and the end-of-charge (EOC) current are programmable with external resistors. When the battery voltage is lower than typically 2.55V, the charger preconditions the battery with typically 20% of the programmed charge current. When the charge current reduces to the programmable EOC current level during the CV charge phase, an EOC indication is provided by the CHG pin, which is an open-drain output. An internal thermal foldback function protects the charger from any thermal failure. Two indication pins (PPR and CHG) allow simple interface to a microprocessor or LEDs. When no adapter is attached or when disabled, the charger draws less than 1µA leakage current from the battery.
特性
- Complete Charger for Single-Cell Li-ion/Polymer Batteries
- Integrated Pass Element and Current Sensor
- No External Blocking Diode Required
- Low Component Count and Cost
- 1% Voltage Accuracy
- Programmable Charge Current
- Programmable End-of-Charge Current
- Charge Current Thermal Foldback for Thermal Protection
- Trickle Charge for Fully Discharged Batteries
- 28V Maximum Voltage for the Power Input
- Power Presence and Charge Indications
- Less Than 1µA Leakage Current off the Battery When No Input Power Attached or Charger Disabled
- Ambient Temperature Range: -40 °C to +85 °C
- 8 Ld 2mm x 3mm DFN and 8 Ld SOIC Packages
- Pb-Free Plus Anneal Available (RoHS Compliant)
产品对比
应用
文档
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类型 | 文档标题 | 日期 |
数据手册 | PDF 540 KB | |
产品变更通告 | PDF 248 KB | |
应用说明 | PDF 509 KB | |
应用说明 | PDF 397 KB | |
4 items
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设计和开发
开发板与套件
High Input Voltage Li-ion Battery Charger Evaluation Board
The ISL6294EVAL1Z evaluation board provides a complete evaluation platform for addressing all of the datasheet specifications and functionalities of the ISL6294 single-cell Li-ion battery charger. The jumpers on the board facilitate the programming of the charge current, different charging...
点读笔演示套件
点读笔解决方案读取打印在纸上的代码,并播放相应的音频。使用业界最低功耗 RL78/G14 微控制器、ID 解码器和图像传感器可再现与扫描内容相对应的声音文件。可以使用 USB 电缆将音频数据从 PC 保存到 Micro SD 卡。采用的 ISL80505 单路输出低压差线性稳压器(LDO),能够在 1.8V 至 6V 的输入电压范围内提供高达 500mA 的输出电流。电池充电控制由 ISL6294 高输入电压充电器执行。
带移动电源功能的 PM2.5 检测仪演示套件
PM2.5 检测仪是一款便携式设备,可以实时测量和检测空气污染物 PM2.5 的浓度。PM2.5的浓度将显示在 LCD 面板上,并通过 LED 指示灯指示空气质量。作为移动电池,它还具有充电和供电功能,并通过四个 LED 指示灯显示电池容量。如果 PM2.5 浓度超过预设浓度阈值或电池电压低于 2.8V,PM2.5 检测仪会通过蜂鸣器通知您。
该解决方案采用 RL78/L12 低功耗、紧凑型 LCD MCU,具有 I/O 端口、A/D 转换器、蜂鸣器、LCD 控制器、STOP 模式等功能。此设备非常适合用于小型家用电器。此外,ISL97656(DC/DC 转换器...
模型
ECAD 模块
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