MCP1825T-5002E/ET

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

The MCP1825T-5002E/ET is a fixed-output Low Dropout (LDO) linear regulator manufactured by Microchip Technology. It provides a nominal output voltage of 5.0 V with a maximum continuous output current capability of 500 mA. The device operates within an input voltage range of 2.1 V to 6.0 V and features a typical dropout voltage of 210 mV at full load. Quiescent current consumption is typically 120 µA, reducing to 0.1 µA in shutdown mode via the SHDN pin. The component includes a Power Good (PWRGD) status indicator and is housed in a surface-mount SOT-223-5 package.

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

• Integrates a Power Good (PWRGD) open-drain output that signals when regulation is achieved.
• Includes a Shutdown (SHDN) control input for active low-power management.
• Provides internal protection against overtemperature conditions and short-circuit currents.
• Maintains stability using small ceramic output capacitors.

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

• High-Speed Driver Chipset Power
• Networking Backplane Cards
• Notebook Computers

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

Verify the specific suffix 'ET' corresponds to the SOT-223-5 tape and reel packaging configuration as defined in the official datasheet. Confirm the part number matches the fixed 5.0 V output variant rather than adjustable or other voltage options. Ensure compliance with RoHS directives and check for any recent Product Change Notifications regarding manufacturing locations or material updates.

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

Select this component for applications requiring high output current from a low-voltage source where minimal voltage drop is critical. The inclusion of the PWRGD pin makes it suitable for systems requiring power sequencing or fault monitoring. Verify that the input voltage remains above the minimum threshold plus the required dropout voltage across all operating temperatures and load conditions.

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

This device belongs to the MCP1825 family of high-current LDO regulators. It shares core electrical characteristics with the MCP1825S series but differs in pin count and feature availability. While the MCP1825S offers a simplified three-pin fixed version, this five-pin variant adds system-level diagnostic capabilities through the dedicated shutdown and power good pins.

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

Direct functional substitutes include other MCP1825 variants such as MCP1825T-5002E/DC or MCP1825T-5002E/AT, provided the package type and pinout are compatible with the existing design.

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

What is the function of the PWRGD pin on this regulator?

The PWRGD pin is an open-drain output that indicates when the regulated output voltage has reached approximately 92% of its nominal value.

How does the SHDN pin affect the device operation?

Pulling the SHDN pin to a logic-low level disables the output and reduces the quiescent current to a typical value of 0.1 µA.