LTC4050-4.2 Lithium-Ion linear Battery Charger Controller with Thermistor Interface

The LTC®4050-4.1/LTC4050-4.2 are complete standalone constant-current/constant-voltage linear charge controllers for lithium-ion (Li-Ion) batteries. Charge current is programmable and final float voltage has ±1% accuracy.

When the input supply is removed, the LTC4050 automatically enters a low quiescent current sleep mode, dropping the battery drain current to 5µA. An internal comparator detects the near-end-of-charge (C/10) condition while a programmable timer, using an external capacitor, sets the total charge time. Fully discharged cells are automatically trickle charged at 10% of the programmed current until cell voltage exceeds 2.49V. The thermistor interface suspends charging if the cell temperature is outside of a 0°C to 50°C temperature window.

The LTC4050 begins a new charge cycle when a discharged battery is connected to the charger or when the input power is applied. In addition, a new charge cycle is automatically started if the battery remains connected to the charger and the cell voltage drops below 3.88V for 4.1V cells or below 3.98V for 4.2V cells.

The LTC4050 is available in the 10-pin MSOP package

产品特点 Features
  • Complete Stand-Alone linear Charger Controller for 1-Cell Lithium-Ion Batteries
  • Thermistor Interface for Battery Temperature Sensing
  • Preset Charge Voltage with ±1% Accuracy
  • Programmable Charge Current
  • C/10 Charge Current Detection Output
  • Programmable Charge Termination Timer
  • Input Supply (Wall Adapter) Detection Output
  • 4.5V to 10V Input Voltage Range
  • Automatic Sleep Mode When Input Supply is Removed (Only 5µA Battery Drain)
  • Automatic Trickle Charging of Low Voltage Cells
  • Automatic Battery Recharge
  • Battery Insertion Detection
  • Space Saving 10-Pin MSOP Package
应用
  • Cellular Phones
  • Handheld Computers
  • Charging Docks and Cradles
典型应用图
LTC4050 典型应用
参数
LTC4050 参数
LTC4050-4.2 订购信息和价格参考Package Variations and Pricing
器件型号 封装 引脚 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量) *
LTC4050EMS-4.1 MSOP 10 E $2.66 $2.25
LTC4050EMS-4.1#PBF MSOP 10 E $2.66 $2.25
LTC4050EMS-4.1#TR MSOP 10 E $2.31
LTC4050EMS-4.1#TRPBF MSOP 10 E $2.31
LTC4050EMS-4.2 MSOP 10 E $2.66 $2.25
LTC4050EMS-4.2#PBF MSOP 10 E $2.66 $2.25
LTC4050EMS-4.2#TR MSOP 10 E $2.31
LTC4050EMS-4.2#TRPBF MSOP 10 E $2.31
LTC4050-4.2 数据手册及相关资料下载
  1. 数据手册(英文) : LTC4050 - Lithium-Ion linear Battery Charger Controller with Thermistor Interface.PDF
  2. 可靠性数据 : R449 Reliability Data .PDF
  3. 产品选型卡 : I2C Battery Gas Gauges.PDF