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LTC4120-4.2 - Wireless Power Receiver and 400mA Buck Battery Charger

Download the LTC4120-4.2 datasheet PDF. This datasheet also covers the LTC4120 variant, as both devices belong to the same wireless power receiver and 400ma buck battery charger family and are provided as variant models within a single manufacturer datasheet.

General Description

The LTC®4120 is a constant-current/constant-voltage wireless receiver and battery charger.

An external programming resistor sets the charge current up to 400mA.

Key Features

  • n Dynamic Harmonization Control Optimizes Wireless Charging Over a Wide Coupling Range n Wide Input Voltage Range: 12.5V to 40V n Adjustable Float Voltage: 3.5V to 11V n Fixed 4.2V Float Voltage Option: LTC4120-4.2 n 50mA to 400mA Charge Current Programmed with a Single Resistor n ±1% Feedback Voltage Accuracy n Programmable 5% Accurate Charge Current n No Microprocessor Required n No Transformer Core n Thermally Enhanced, Low Profile 16-Lead (3mm × 3mm × 0.75mm) QFN Package.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LTC4120-LinearTechnology.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Linear Technology (now Analog Devices)

Part Number Description
LTC4120 Wireless Power Receiver and 400mA Buck Battery Charger
LTC4121 40V 400mA Synchronous Step-Down Battery Charger
LTC4121-4.2 40V 400mA Synchronous Step-Down Battery Charger
LTC4125 5W AutoResonant Wireless Power Transmitter
LTC4100 Smart Battery Charger Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LTC4120/LTC4120-4.2 Wireless Power Receiver and 400mA Buck Battery Charger Features n Dynamic Harmonization Control Optimizes Wireless Charging Over a Wide Coupling Range n Wide Input Voltage Range: 12.5V to 40V n Adjustable Float Voltage: 3.5V to 11V n Fixed 4.2V Float Voltage Option: LTC4120-4.2 n 50mA to 400mA Charge Current Programmed with a Single Resistor n ±1% Feedback Voltage Accuracy n Programmable 5% Accurate Charge Current n No Microprocessor Required n No Transformer Core n Thermally Enhanced, Low Profile 16-Lead (3mm × 3mm × 0.