LTC4052-4.2 - LTC4052-4.2是Lithium-Ion Battery Pulse Charger with Overcurrent Protection

LTC4052-4.2是LINEAR凌力尔特公司的一款脉冲充电器产品，LTC4052-4.2是LTC4052-4.2是Lithium-Ion Battery Pulse Charger with Overcurrent Protection，本站介绍了LTC4052-4.2的封装应用图解、特点和优点、功能等，并给出了与LTC4052-4.2相关的LINEAR元器件型号供参考。

LTC4052-4.2 - LTC4052-4.2是Lithium-Ion Battery Pulse Charger with Overcurrent Protection - 脉冲充电器 - 电源管理 - 凌力尔特

LTC4052-4.2 - Lithium-Ion Battery Pulse Charger with Overcurrent Protection

LTC4052-4.2 - Lithium-Ion Battery Pulse Charger with Overcurrent Protection - Linear Technology（凌力尔特）

功能描述

The LTC4052 is a complete standalone pulse charger with integrated MOSFET for 1-cell lithium-ion batteries.

An external sense resistor provides overcurrent limiting as a safety precaution against a user connecting a wall adapter with the incorrect or no current limit. The internal MOSFET prevents reverse battery current from flowing if the input voltage is shorted to ground, eliminating the need for a blocking diode.

As the battery accepts charge and approaches the programmed float voltage, the internal MOSFET begins switching off and on with the duty cycle gradually decreasing as the battery approaches a fully charged condition. A programmable timer terminates the charge cycle. The near end-of-charge C/10 condition is indicated at the CHRG pin when the average charge current falls to one tenth of the wall adapter current. Removing the input voltage puts the LTC4052 into a sleep mode, dropping the battery current drain to less than 1μA.

The LTC4052 is available in a tiny 8-pin thermally enhanced MSOP package.

特点

Very Low Power Dissipation: 350mW at 1A

Complete Standalone Pulse Charger for 1-Cell Lithium-Ion Batteries

Requires No Microcontroller, MOSFET or Blocking Diode

Sense Resistor Limits Maximum Current for Safety

Programmable Charge Termination Timer for

Maximum Capacity Charging

±1% Float Voltage Accuracy

Near End-of-Charge (C/10) Detection Output

AC Wall Adapter Present Output

Low Battery Drain when Input Supply Is Removed