LTC4062中文资料具微功率比较器的独立型线性锂离子电池充电器数据手册ADI规格书

描述 Description

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

特性 Features

• 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

简介

LTC4062属于集成电路（IC）的电池充电器。由制造生产的LTC4062电池充电器电池充电器 PMIC（电源管理集成电路）是元器件级产品系列，用于在电子设备中实现电池充电控制和充电管理功能。这些器件主要根据电池化学及其设计用于的电池数量来分类，可提供电化学电池和超级电容器安全充电所必需的电流或电压调节和监视功能。