MCP1703T-4002E/MB

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

The MCP1703T-4002E/MB is a fixed-output CMOS low dropout (LDO) voltage regulator manufactured by Microchip Technology. It provides a nominal output voltage of 4.0V with a maximum continuous load current of 250mA for output voltages greater than or equal to 2.5V. The device operates within an input voltage range of 2.7V to 16.0V and features a typical quiescent current of 2.0µA. It utilizes the SOT-89-3 surface-mount package.

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

• Low quiescent current consumption suitable for battery-powered applications
• Capable of delivering up to 250mA output current
• Integrated short-circuit and overtemperature protection
• Stable operation with ceramic, tantalum, or aluminum electrolytic output capacitors

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

• Battery-powered devices
• Microcontroller power supplies
• Smart battery packs
• Low quiescent current voltage reference

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

Verify the specific suffix 'MB' corresponds to the SOT-89-3 package configuration as defined in the official datasheet. Confirm that the fixed 4.0V output aligns with system requirements. Ensure compliance with RoHS directives and check for any recent Product Change Notifications regarding manufacturing locations or material composition updates.

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

Select this component when a fixed 4.0V rail is required from an input source between 2.7V and 16.0V. The SOT-89-3 package offers higher thermal dissipation capabilities compared to smaller packages like SOT-23A. Verify that the application load does not exceed the 250mA continuous rating and that the input-to-output differential remains sufficient to maintain regulation under all operating conditions.

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

This part belongs to the MCP1703 family of micropower LDO regulators. The family includes variants with different output voltages and package options such as SOT-223-3, SOT-23A, and DFN-8. The 'T' indicates tape and reel packaging, while 'E' denotes environmental compliance. The 'MB' suffix specifically identifies the SOT-89-3 physical footprint.

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

MCP1703AT-4002E/MC

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

What is the minimum output capacitance required for stability?

A minimum output capacitance of 1.0 µF is required for small signal stability.

How does the device handle overcurrent conditions?

The internal circuitry monitors current flow and turns off the pass transistor during short-circuit or excessive current events, attempting to restart periodically.