LT3667EUDD#TRPBF

Overview

The LT3667EUDD#TRPBF is a triple-output switching regulator manufactured by Analog Devices Inc., housed in a 24-lead QFN package. It integrates one synchronous buck converter and two LDO regulators, supporting an input voltage range of 4.3 V to 40 V. The primary buck output delivers up to 400 mA with a maximum voltage of 38.6 V. Two additional outputs provide up to 200 mA each, adjustable from 0.8 V to 38.6 V. Operating frequencies are selectable between 243 kHz and 2.2 MHz, with a quiescent current of 40 uA. The device functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates one high-current synchronous buck converter alongside two independent low-dropout linear regulators for combined switching and LDO performance.
• Features dual fault protection mechanisms to enhance system reliability under abnormal operating conditions.
• Offers flexible switching frequency selection to optimize efficiency and minimize external component size across various load requirements.

Applications

• Industrial control systems requiring multiple regulated power rails
• Automotive electronics demanding wide input voltage tolerance
• Communication infrastructure equipment needing compact power solutions

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the supplier provides valid traceability records. Cross-reference the exact part number against the latest datasheet revision to confirm pinout and electrical characteristics match design requirements.

Selection Notes

Select this component when designing systems requiring three distinct voltage rails from a single wide-input source. The integrated topology reduces board space compared to discrete solutions. Evaluate thermal performance based on total output current and ambient conditions. Consider the selectable switching frequency to balance EMI constraints against passive component sizing needs.

Part Context

This part belongs to the LT3667 series of mixed-mode power management ICs. It combines the efficiency of synchronous buck conversion with the low noise of LDO regulation. The family targets applications needing high density and wide input ranges. The EUDD variant specifies the specific thermal pad and lead configuration for surface mount assembly.

Replacement Considerations

LT3667EUDD#PBF