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 delivers up to 600mA output current with greater than 95% efficiency and supports fixed output voltages down to 1V. It features internal power MOSFETs, ultra-fast transient response, and stability with small ceramic capacitors. The component is housed in a 10-pin 2mm x 2mm Thin MLF package and functions within a junction temperature range of –40°C to +125°C.

Feature Summary

• Integrates a high-efficiency 2MHz synchronous buck regulator with a 300mA LDO for compact dual-rail power solutions.
• Features fully integrated internal power MOSFETs enabling high current delivery and simplified external component requirements.
• Provides ultra-low noise performance and stable operation with minimal 2.2µF ceramic output capacitors.
• Includes comprehensive protection mechanisms such as thermal shutdown, current limit, and micropower shutdown modes.

Applications

• Core and I/O supply rails for application processors
• Power supplies for camera DSPs
• Multimedia chipset power management

Procurement Notes

Verify the specific suffix '4K' against the manufacturer's official datasheet to confirm the fixed output voltage configuration, as this designation determines the electrical parameters. Ensure the package type matches the required 10-pin Thin MLF footprint. Confirm RoHS compliance status through the latest documentation provided by Microchip Technology or authorized distributors before finalizing procurement specifications.

Selection Notes

Select this component when space-constrained designs require both a high-current switching regulator and a low-noise linear regulator on a single chip. The 2MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the 600mA buck current limit and 300mA LDO capability to ensure adequate headroom for the target processor or DSP loads while maintaining high efficiency across the operating range.

Part Context

The MIC2225 belongs to Microchip's portfolio of ultra-small dual-channel DC/DC regulators. Originally developed under Micrel, these devices are designed for portable applications requiring efficient power conversion in minimal footprints. The series combines switching and linear regulation technologies to provide clean power rails for sensitive digital logic and multimedia processing units in mobile and embedded systems.

Replacement Considerations

Check for MIC2225-GMYMT TR or MIC2225-G4YMT TR variants if different output voltage configurations or package revisions are needed. Verify pinout compatibility and electrical parameter alignment with the original design requirements before substituting any alternative part numbers.

FAQ

What is the maximum output current for the buck converter section?

The synchronous buck regulator can supply up to 600mA of output current.

Does the MIC2225 support operation with ceramic output capacitors?

Yes, the device is stable with small 2.2µF ceramic output capacitors.

What is the switching frequency of the DC-DC converter?

The buck regulator operates at a constant 2MHz frequency in PWM mode.