MIC29203BU

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The MIC29203BU is a Micrel linear voltage regulator with a fixed 5 V output and a maximum continuous output current of 3 A. It utilizes a TO-263 surface-mount package. The device features line regulation of 0.5% and load regulation of 1%. Output accuracy is specified at ±1%. The minimum input voltage is 2.5 V, while the maximum input voltage is 26 V. Quiescent current is typically 10 mA. The junction-to-case thermal resistance is 15°C/W. Operating temperature range spans from -40°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides high-current regulation up to 3 A for demanding power loads
• Includes comprehensive protection mechanisms such as thermal shutdown and current limiting
• Ensures stable performance with low dropout characteristics under varying conditions

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered systems requiring efficient voltage conversion
• Automotive electronics subject to load-dump transients
• Portable equipment needing regulated core or I/O supply rails

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify that the specific suffix 'BU' corresponds to the TO-263 surface-mount package variant rather than through-hole options. Confirm the fixed 5 V output version matches the design requirement. Ensure the manufacturer designation aligns with Microchip Technology following the acquisition of Micrel assets. Check for automotive-grade qualification if operating in harsh environments.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 5 V rail is required with up to 3 A capacity. Consider the TO-263 package for adequate thermal dissipation without excessive heatsinking. Evaluate the 26 V maximum input rating against system supply variations. Compare quiescent current requirements against other LDO families if battery life is critical.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the MIC2920A family of bulletproof, efficient voltage regulators. The family is characterized by very low dropout voltages and low quiescent currents that increase only slightly in dropout. This specific model represents the 5 V fixed output variant within the series designed for robust industrial and automotive applications.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

MIC29203WT

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the maximum input voltage for the MIC29203BU?

The maximum input voltage is 26 V.

Does the MIC29203BU include thermal protection?

Yes, the device includes thermal shutdown protection.