LTC4062
量产具微功率比较器的独立型线性锂离子电池充电器
- 产品模型
- 2
产品详情
- Charge Current Programmable up to 1A
- Charges Single Cell Li-Ion Batteries Directly from USB Port
- Preset Float Voltage with ±0.35% Accuracy
- Micropower Comparator for Battery Monitoring
- Thermal Regulation Maximizes Charge Rate Without Risk of Overheating*
- Programmable Charge Current Detection/Termination
- Programmable Charge Termination Timer
- Smart Pulsing Error Feature
- SmartStartTM Prolongs Battery Life
- 20µA Charger Quiescent Current in Shutdown
- Available in a Low Profile (0.75mm) 10-Lead
(3mm × 3mm) DFN Package
The LTC®4062 is a full-featured, flexible, standalone linear charger for single-cell Lithium-Ion batteries. It is capable of operating within USB power specifications.
Both programmable time and programmable current based termination schemes are available. Furthermore, the CHRG open-drain status pin can be programmed to indicate the battery charge state according to the needs of the application. A precise low power comparator is available even with no power applied as long as battery voltage is higher than 2.5V. Additional safety features designed to maximize battery lifetime and reliability include the SmartStart charging algorithm.
No external sense resistor or external blocking diode is required for charging due to the internal MOSFET architecture. Internal thermal feedback regulates the charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The charge current is programmed with an external resistor. With power applied, the LTC4062 can be put into shutdown mode to reduce the supply current to 20µA and the battery drain current to less than 5µA. Without power applied, the internal low power comparator can work sinking only 10µA from the battery.
Other features include smart recharge, USB C/5 current programming input and undervoltage lockout.
*Protected by U.S. Patents, including 6522118.
Applications
- Handheld Computers
- Portable MP3 Players
- Digital Cameras
参考资料
数据手册 1
可靠性数据 1
用户手册 1
应用笔记 1
技术文章 2
ADI 始终高度重视提供符合最高质量和可靠性水平的产品。我们通过将质量和可靠性检查纳入产品和工艺设计的各个范围以及制造过程来实现这一目标。出货产品的“零缺陷”始终是我们的目标。查看我们的质量和可靠性计划和认证以了解更多信息。
| 产品型号 | 引脚/封装图-中文版 | 文档 | CAD 符号，脚注和 3D模型 |
|---|---|---|---|
| LTC4062EDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC4062EDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) |
这是最新版本的数据手册
评估套件
LTC4062EDD | 集成比较器的单节锂离子电池充电器， +VIN = 4.3V 至 8V， Bat = 4.2V (0.5A/1A)
资料
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