LTC1980 - LTC1980是Combination Battery Charger and DC/DC Converter

LTC1980是LINEAR凌力尔特公司的一款开关充电器产品，LTC1980是LTC1980是Combination Battery Charger and DC/DC Converter，本站介绍了LTC1980的封装应用图解、特点和优点、功能等，并给出了与LTC1980相关的LINEAR元器件型号供参考。

LTC1980 - LTC1980是Combination Battery Charger and DC/DC Converter - 开关充电器 - 电源管理 - 凌力尔特

LTC1980 - Combination Battery Charger and DC/DC Converter

LTC1980 - Combination Battery Charger and DC/DC Converter - Linear Technology（凌力尔特）

功能描述

The LTC1980 integrates PWM power control for charging a battery and converting the battery voltage to a regulated output or simultaneously charging the battery while powering a system load from an unregulated AC wall adapter. Combining these features into a single IC produces a smaller area and lower cost solution compared to presently available multi-IC solutions. The LTC1980 shares the discrete components for both the battery charger and the DC/DC converter thus minimizing size and cost relative to dual controller solutions. Both the battery charger and DC/DC converter use a current mode flyback topology for high efficiency and excellent transient response. Optional Burst Mode operation and power-down mode allow power density, efficiency and output ripple to be tailored to the application.

The LTC1980 provides a complete Li-Ion battery charger with charge termination timer, preset Li-Ion battery voltages, overvoltage and undervoltage protection, and userprogrammable constant-current charging. Automatic battery recharging, shorted-cell detection, and open-drain C/10 and wall plug detect outputs are also provided. User programming allows NiMH and NiCd battery chemistries to be charged as well.

特点

Single Controller IC Includes Battery Charger Plus DC/DC Converter

Wall Adapter Voltage May be Above or Below Battery Voltage

LDO Controller Allows Simultaneous Charging and Regulating from Wall Adapter Input

Standalone Li-Ion Battery Charger Including Charge Termination, Overvoltage Protection, Shorted-Cell Detection and Battery Recharge

Selectable 4.1V, 4.2V, 8.2V and 8.4V Float Voltages

Simple NiMH and NiCd Battery Charger

Pin Programmable Regulator Burst Mode Operation and Shutdown for High Efficiency

High Efficiency Current Mode 300kHz PWM

Reduced Component Architecture

Undervoltage Protection and Soft-Start Insures Start-Up with Current Limited Wall Adapter

Small 24-Pin SSOP Package