LT3477EUF#TRPBF

LED Driver IC Overview

The LT3477EUF#TRPBF is a current mode DC/DC step-up converter manufactured by Analog Devices Inc. It features dual rail-to-rail current sense amplifiers and an internal 3A, 42V switch. The device operates with an input voltage range of 2.5 V to 25 V and provides a maximum output voltage of 42 V. It supports a switching frequency adjustable from 200 kHz to 3.5 MHz and delivers up to 2.66 A output current. The component utilizes a 20-pin QFN package and functions within a temperature range of -40°C to +85°C.

LED Driver IC Feature Summary

• Integrates dual rail-to-rail current sense amplifiers for precise control
• Combines traditional voltage feedback with unique current feedback loops
• Supports operation as both constant-current and constant-voltage source
• Features an internal high-voltage switch rated at 42V

LED Driver IC Applications

• Driving multiple white LEDs in boost configurations
• PWM dimming applications for LED backlighting
• Buck-boost LED driver circuits for wide input ranges
• General purpose DC/DC step-up conversion

LED Driver IC Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging rather than tube packaging when sourcing. Confirm the manufacturer is Analog Devices Inc. Ensure the QFN-20 package matches the design requirements. Check RoHS compliance status through official documentation. Validate that the part number corresponds to the exact electrical specifications required for the application.

LED Driver IC Selection Notes

Select this component for applications requiring high current drive capabilities up to 3A. Consider the adjustable switching frequency for optimizing efficiency and EMI performance. Evaluate the dual current sense amplifiers if precise LED current regulation is necessary. Ensure the input voltage range fits the system power supply constraints. Verify thermal management requirements for the QFN-20 package under load conditions.

LED Driver IC Part Context

The LT3477 belongs to the LT3477 series of power management ICs. It is categorized under Switching Voltage Regulators and PMIC products. The device is designed for portable and general power conversion tasks. It represents Analog Devices' solution for integrated high-current step-up converters. The series includes variants with different packaging options.

LED Driver IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.