Datasheet4U Logo Datasheet4U.com

LTC4121-4.2 - 40V 400mA Synchronous Step-Down Battery Charger

This page provides the datasheet information for the LTC4121-4.2, a member of the LTC4121 40V 400mA Synchronous Step-Down Battery Charger family.

Description

The LTC®4121 is a 400mA constant-current/constantvoltage (CC/CV) synchronous step-down battery charger.

In addition to CC/CV operation, the LTC4121 regulates its input voltage to a programmable percentage of the input open-circuit voltage.

Features

  • nn Wide Input Voltage Range: 4.4V to 40V nn Temperature Compensated Input Voltage Regulation for Maximum Power Point Tracking (MPPT) nn Adjustable Float Voltage 3.5V to 18V (LTC4121) nn Fixed 4.2V Float Voltage Option (LTC4121-4.2) nn High Efficiency: Up to 95% nn 50mA to 400mA Programmable Charge Current nn ±1% Feedback Voltage Accuracy nn Programmable 5% Accurate Charge Current nn Thermally Enhanced, Low Profile (0.75mm) 16-Lead (3mm × 3mm) QFN Package.

📥 Download Datasheet

Datasheet preview – LTC4121-4.2

📁 Similar Datasheet

  • LTC4124 - 100mA Wireless Li-Ion Charger (Analog Devices)
  • LTC4126 - 7.5mA Wireless Li-Ion Charger (Analog Devices)
  • LTC4151-2 - High Voltage I2C Current and Voltage Monitor (Linear)
  • LTC4162-F - 35V/3.2A Multicell LiFePO4 Step-Down Battery Charger (Analog Devices)
  • LTC4162-L - 35V/3.2A Multicell Lithium-Ion Step-Down Battery Charger (Analog Devices)
  • LTC4162-S - 35V/3.2A Lead-Acid Step-Down Battery Charger (Analog Devices)
  • LTC4000-1 - High Voltage High Current Controller (Linear)
  • LTC4010 - High Efficiency Standalone Nickel Battery Charger (Linear)
  • LTC4012 - Multi-Chemistry Battery Charger (Linear Technology Corporation)
  • LTC4012-1 - Multi-Chemistry Battery Charger (Linear Technology Corporation)
Other Datasheets by Linear Technology
  • LTC4121 - 40V 400mA Synchronous Step-Down Battery Charger
  • LTC4120 - Wireless Power Receiver and 400mA Buck Battery Charger
  • LTC4120-4.2 - Wireless Power Receiver and 400mA Buck Battery Charger
  • LTC4100 - Smart Battery Charger Controller
  • LTC4101 - Smart Battery Charger Controller
  • LTC4110 - Battery Backup System Manager
  • LTC4150 - Coulomb Counter/ Battery Gas Gauge
  • LTC4151 - High Voltage I2C Current and Voltage Monitor

Full PDF Text Transcription

Click to expand full text
LTC4121/LTC4121-4.2 40V 400mA Synchronous Step-Down Battery Charger FEATURES nn Wide Input Voltage Range: 4.4V to 40V nn Temperature Compensated Input Voltage Regulation for Maximum Power Point Tracking (MPPT) nn Adjustable Float Voltage 3.5V to 18V (LTC4121) nn Fixed 4.2V Float Voltage Option (LTC4121-4.2) nn High Efficiency: Up to 95% nn 50mA to 400mA Programmable Charge Current nn ±1% Feedback Voltage Accuracy nn Programmable 5% Accurate Charge Current nn Thermally Enhanced, Low Profile (0.75mm) 16-Lead (3mm × 3mm) QFN Package APPLICATIONS nn Handheld Instruments nn Solar Powered Devices nn Industrial/Military Sensors and Devices L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of Linear Technology Corporation.
Published: |