MIC3385YHL-TR

Overview

The MIC3385YHL-TR is a dual-output power management IC from Microchip Technology, integrating a synchronous buck converter and a low-dropout linear regulator. The buck output supports adjustable voltage down to 1V with up to 1A current capability, while the LDO provides a fixed 1V output at 120mA. Operating within a 2.7V to 5.5V input range, it features an 8MHz switching frequency. The device is housed in a 14-MLF package (3x3.5mm) and operates across a -40°C to 125°C temperature range.

Feature Summary

• Integrates a synchronous buck converter and a linear regulator for combined power management.
• Supports high-frequency operation to minimize external component size.
• Provides independent control over buck and LDO outputs.

Applications

• Portable electronic devices requiring multiple voltage rails
• Embedded systems with mixed analog and digital power needs
• Battery-powered applications needing efficient step-down regulation

Procurement Notes

Verify the specific suffix and tape-and-reel quantity against official distributor catalogs before ordering. Confirm that the 14-MLF package dimensions align with your PCB footprint requirements. Ensure input voltage specifications match your system's supply range to avoid operational faults. Check for any recent product change notices regarding pinout or electrical characteristics.

Selection Notes

Select this component when a compact solution combining switching efficiency and LDO noise filtering is required. Consider the 1A buck capacity for moderate load currents and the integrated 120mA LDO for sensitive analog circuits. Evaluate thermal performance given the small MLF package size under maximum load conditions.

Part Context

This part belongs to Microchip's portfolio of mixed-signal power management solutions. It is designed to replace discrete regulator combinations in space-constrained designs. The integration reduces board area and simplifies bill of materials by consolidating two regulation stages into a single surface-mount device.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility carefully if considering alternatives from other manufacturers due to potential differences in pinout, control logic, or thermal characteristics.