LT3667HUDD#TRPBF

Overview

The LT3667HUDD#TRPBF is a high-voltage synchronous buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 4.3 V to 40 V and delivers up to 400 mA of output current. The device features a low quiescent current of 50 uA and supports a switching frequency of 2.2 MHz. It includes two independent outputs, with the primary output capable of reaching 38.6 V. The component is housed in a QFN-24 package and is rated for operation between -40°C and +150°C.

Feature Summary

• Integrated synchronous buck topology for efficient step-down conversion
• Dual independent output channels for multi-rail power distribution
• Extended thermal rating suitable for high-temperature environments

Applications

• Industrial control systems requiring robust power regulation
• Automotive electronics operating under wide voltage fluctuations
• High-temperature sensor interface circuits

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm the HUDD variant meets the required temperature grade for your application environment. Ensure compatibility with the DC1869A demonstration board if initial evaluation is planned before final integration into the design.

Selection Notes

Select this component when a single IC must provide multiple regulated rails from a high-voltage source. The 40V input tolerance accommodates noisy industrial or automotive bus lines. Consider the 2.2MHz frequency for balancing efficiency against external component size requirements.

Part Context

This part belongs to the LT3667 series of high-voltage regulators designed for demanding applications. It complements other Analog Devices PMICs by offering integrated dual-output capability within a compact footprint. The series targets markets requiring reliability and wide operating temperature ranges without complex external circuitry.

Replacement Considerations

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