FAN2103EMPX

Overview

The FAN2103EMPX is a switching voltage regulator manufactured by onsemi, classified under PMIC - Power Management ICs. It utilizes a Buck topology with current-mode control and pulse width modulation. The device supports an input voltage range of 4.5 V to 5.5 V, typically operating at 5 V. It features a 25-pin MLP (HVQCCN) package measuring 6x5 mm. The operational temperature range extends from -40°C to +85°C. This component is currently listed as obsolete.

Feature Summary

• Integrates current-mode control architecture for stable regulation
• Utilizes pulse width modulation technique for efficient power conversion
• Designed in a compact 25-lead MLP quad non-JEDEC package

Applications

• Embedded systems requiring 5V step-down conversion
• Industrial control modules
• Communication equipment power stages

Procurement Notes

Verify obsolescence status before design finalization. Confirm package dimensions match PCB footprint requirements. Check RoHS compliance documentation for environmental regulations. Ensure supply chain availability for legacy support needs.

Selection Notes

Select this component only if the specific 4.5V to 5.5V input window aligns with system rails. Evaluate thermal performance within the MLP package constraints. Consider alternative active parts due to obsolete status.

Part Context

Part of the FAN21xx series from Fairchild Semiconductor, now onsemi. Designed for low-voltage DC-DC applications. Shares architectural similarities with other buck regulators in the portfolio but differs in pin count and input specifications.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided source material.