MIC3385-1.5YHL

Overview

The MIC3385-1.5YHL is an integrated power system module manufactured by Microchip Technology, formerly Micrel. It combines a synchronous buck converter with a low-dropout (LDO) regulator in a single package. The device features an 8MHz switching frequency and operates within an input voltage range of 2.7V to 5.5V. The buck output provides a fixed 1.5V at up to 1A, while the LDO output delivers 1.5V at 120mA. It utilizes a 14-MLF® (3x3.5mm) surface-mount package and supports operation from -40°C to +125°C.

Feature Summary

• Integrates a synchronous buck regulator and an LDO standby mode for efficient power management
• Utilizes an inductorless buck topology to minimize external component count and board space
• Operates at a high 8MHz switching frequency to support compact passive components

Applications

• Portable battery-powered devices requiring high efficiency and small form factor
• Systems needing simultaneous regulated rails for digital logic and analog peripherals
• Space-constrained embedded applications utilizing MLF packaging

Procurement Notes

Verify the specific suffix 'YHL' corresponds to the 14-MLF package and fixed 1.5V output configuration. Confirm manufacturer lineage as Microchip Technology following the acquisition of Micrel. Ensure compatibility with RoHS standards if required by your application specifications.

Selection Notes

Select this component when board real estate is limited due to its inductorless buck design. It is suitable for applications requiring a primary high-current rail and a secondary low-current stable rail. Consider the 8MHz frequency impact on electromagnetic interference compared to lower-frequency alternatives.

Part Context

This part belongs to the MIC3385 series of dual-output power modules. It replaces traditional discrete solutions combining separate buck controllers and LDOs. The series offers variations in output voltages and frequencies, providing flexibility for different power density requirements in portable electronics.

Replacement Considerations

MIC3385YHL-TR: Identical functional specification with tray/tray-compatible packaging options. MIC2285: Similar synchronous buck architecture but lacks the integrated LDO standby mode.