MIC2225-4KYMT-TR

Overview

The MIC2225-4KYMT-TR is a dual-output voltage regulator from Microchip Technology, integrating a high-efficiency 2MHz PWM synchronous buck converter and a 300mA Low Dropout (LDO) regulator. The device operates with an input voltage range of 2.7V to 5.5V. The synchronous buck section supports output currents up to 600mA in PWM mode, while the LDO provides stable auxiliary power. It is housed in a compact 10-pin Thin MLF package measuring 2mm x 2mm, designed for space-constrained portable applications.

Feature Summary

• Integrates a high-efficiency 2MHz synchronous buck regulator with internal MOSFETs
• Includes a dedicated 300mA LDO for low-noise auxiliary supply rails
• Operates with fixed 2MHz switching frequency in PWM mode for consistent performance
• Features ultra-fast transient response and stability with small ceramic capacitors

Applications

• Powering core and I/O supply rails for application processors
• Supplying camera DSPs in mobile imaging systems
• Providing power for multimedia chipsets in portable devices

Procurement Notes

Verify the specific suffix '4K' against official Microchip documentation to confirm fixed output voltage configuration. Ensure the 'YMT' package designation matches the required 10-pin Thin MLF footprint. Confirm RoHS compliance status through current datasheets. Cross-reference part numbers with Micrel legacy data if sourcing from older inventory channels.

Selection Notes

Select this component when a combined DC/DC and LDO solution is required for multi-rail power architectures. The integrated topology reduces external component count compared to discrete solutions. Consider the 2MHz switching frequency for minimizing passive component size while maintaining efficiency. Evaluate thermal performance within the 2x2mm package for high-current buck applications.

Part Context

This part belongs to the MIC2225 family of dual-channel regulators originally developed by Micrel, now under Microchip Technology. The series targets portable electronics requiring efficient power management in minimal board space. Similar variants exist with different output configurations or package options, sharing the same core architecture and pinout compatibility.

Replacement Considerations

MIC2225-GMYMT TR: Dual channel DC/DC + LDO variant with potentially different output settings.

FAQ

What is the maximum output current for the buck converter?

The synchronous buck regulator can supply up to 600mA output current in PWM mode.

Does the device support shutdown mode?

Yes, it features micropower shutdown capability consuming approximately 1mA in shutdown state.