MIC2251-2YD5-TR

Voltage Regulators - DC DC Switching Regulators Overview

The MIC2251-2YD5-TR is a synchronous boost switching regulator IC manufactured by Microchip Technology. It operates with an input voltage range of 2.5V to 5.5V and provides an adjustable output voltage up to 37V. The device delivers a maximum switch current of 900mA and supports a switching frequency of up to 2.5MHz. It features a single positive output configured for adjustable regulation, starting from a minimum fixed reference of 1.24V. The component is housed in a TSOT-23-5 package and is rated for operation across a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous boost topology for high efficiency step-up conversion
• Adjustable output voltage capability within specified limits
• Integrated shutdown function for power management
• Compact surface-mount packaging suitable for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered electronic devices requiring voltage step-up
• General-purpose DC-DC power supply circuits
• Embedded systems utilizing single-cell lithium-ion or alkaline batteries

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific ordering suffix to ensure the correct tape-and-reel configuration matches assembly requirements. Confirm that the component meets RoHS3 compliance standards as indicated in official documentation. Check for any recent Product Change Notifications (PCN) regarding packaging or manufacturing location updates prior to finalizing procurement orders to ensure supply chain consistency.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact synchronous boost solution is required with an input range compatible with standard single-cell battery voltages. The adjustable output feature allows flexibility in setting the target voltage via external resistors. Ensure the application load current does not exceed the 900mA switch current limit and that the required output voltage remains within the 37V maximum specification for safe operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MIC2251 series of boost converters from Microchip Technology, formerly Micrel. It is designed as a cost-effective, small-footpower management solution. The 'YD5' suffix indicates the TSOT-23-5 package type, while '-TR' denotes the reel packaging format. It serves as a direct replacement for previous Micrel-branded units with identical electrical characteristics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other MIC2251 variants with different output configurations or package options. Cross-reference with MIC2250 series parts if higher output current is needed, though electrical parameters differ. Verify pin compatibility and thermal performance when substituting with non-Microchip synchronous boost regulators.