LTC3631EMS8E-3.3#TRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3631EMS8E-3.3#TRPBF is a high-efficiency, high-voltage synchronous step-down DC/DC converter manufactured by Analog Devices Inc. It features an input voltage range of 4.5V to 45V and provides a fixed output voltage of 3.3V. The device delivers a maximum output current of 100mA with a typical quiescent supply current of 12μA at no load. It operates within an extended temperature range from -40°C to +125°C TJ. Packaged in an 8-lead MSOP with an exposed pad (EP), this automotive-grade component integrates internal high-side and synchronous power switches for optimized performance in space-constrained applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates internal high-side and synchronous power switches to maximize efficiency across the operating range
• Maintains low quiescent current while ensuring continuous output voltage regulation under no-load conditions
• Features programmable peak current limit to allow optimization of efficiency in lower current applications

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive electronic systems requiring high-voltage buck conversion
• Industrial control circuits with wide input voltage ranges
• Battery-powered equipment needing efficient power management

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific suffix #TRPBF corresponds to the Tape & Reel packaging format required for automated assembly processes. Confirm that the E3 designation indicates compliance with RoHS standards and lead-free manufacturing requirements. Ensure the part status remains active before finalizing procurement plans to avoid obsolescence risks during production cycles.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3V output is required from a high-voltage source up to 45V. It is suitable for designs where board space is limited due to the compact MSOP package. Consider the 100mA current capability against load requirements. The adjustable switching frequency feature allows flexibility in filtering design, though specific frequency selection must align with external inductor and capacitor choices.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC3631 series of high-voltage synchronous step-down converters. It shares the core topology and functionality with variants like the LTC3631IMS8E-5#PBF, differing primarily in output voltage configuration and packaging style. The series is designed for applications demanding high efficiency and low standby power consumption from high-voltage inputs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other fixed-output variants within the LTC3631 family, such as the LTC3631IMS8E-5#PBF for a 5V output requirement. Cross-model replacements should be evaluated based on pin compatibility and thermal performance characteristics.