LT8312MPMS#PBF

Overview

The LT8312MPMS#PBF is a monolithic synchronous step-down switching regulator featuring an integrated high-voltage switch. It operates from input voltages up to 60V and delivers output currents exceeding 5A. The device utilizes a fixed 500kHz switching frequency with internal compensation for stability. Key electrical parameters include a quiescent current of 4.5mA, a shutdown current of 1µA, and a minimum on-time of 75ns. It supports output voltages down to 0.8V via an external resistor divider.

Feature Summary

• Integrated high-voltage power switch eliminates external component count
• Fixed-frequency operation ensures predictable noise spectrum
• Internal error amplifier simplifies loop compensation design

Applications

• Industrial point-of-load regulation
• Battery-powered equipment voltage conversion
• Distributed power systems

Procurement Notes

Verify the specific suffix matches the required package and temperature grade. Confirm RoHS compliance status through official manufacturer documentation. Ensure ordering codes align with current production status to avoid obsolescence risks during procurement.

Selection Notes

Select this component when input voltages exceed standard low-voltage regulator limits but remain below 60V. Evaluate thermal performance based on expected load current and ambient conditions. Consider the fixed switching frequency against system noise sensitivity requirements.

Part Context

This part belongs to the LT8312 family of high-voltage buck converters. It shares architectural similarities with other Linear Technology synchronous regulators designed for industrial applications. The MPMS package denotes a specific thermal and footprint configuration within the product line.

Replacement Considerations

Direct substitutes include the LT8312EMS#PBF or LT8312HMS#PBF depending on package and temperature range requirements. Verify pin compatibility and electrical specifications before substitution.