MCP1825T-0802E/DC

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

The MCP1825T-0802E/DC is a Microchip Technology fixed-output Low Dropout (LDO) linear regulator providing 500 mA output current. It features a standard fixed output voltage of 0.8V, with an input operating voltage range from 2.1V to 6.0V. The device utilizes SOT-223-5 packaging and includes a Shutdown (SHDN) pin for low-power control and a Power Good (PWRGD) indicator. Typical quiescent current is 120 µA, reducing to 0.1 µA in shutdown mode. It offers a typical dropout voltage of 210 mV at full load and incorporates short circuit current limiting and overtemperature protection.

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

• Provides high output current capability up to 500 mA with low dropout voltage characteristics.
• Includes dedicated Shutdown (SHDN) pin for active-low control and Power Good (PWRGD) open-drain status output.
• Operates stably with small ceramic output capacitors, requiring only 1.0 µF for regulation.
• Integrates internal protection mechanisms including short circuit current limiting and thermal shutdown.

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 'T' indicates tape-and-reel packaging configuration when sourcing. Confirm the '0802' designation corresponds to the 0.8V fixed output voltage variant. Ensure the '/DC' package code matches the required SOT-223-5 footprint for PCB layout compatibility. Cross-reference the manufacturer datasheet DS22056B for absolute maximum ratings and thermal resistance values before finalizing procurement specifications.

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

Select this component for applications requiring stable sub-1.8V power delivery with high transient response capabilities. The inclusion of the PWRGD pin makes it suitable for systems needing precise power sequencing or fault monitoring. Consider the SOT-223-5 package for surface-mount designs where moderate heat dissipation is sufficient. Verify that the input voltage source remains within the 2.1V to 6.0V operational window to ensure proper regulation and dropout performance.

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

This part belongs to the MCP1825 family of 500 mA CMOS LDO regulators manufactured by Microchip Technology. The family distinguishes between the 5-pin MCP1825, which includes SHDN and PWRGD pins, and the 3-pin MCP1825S. The MCP1825T-0802E/DC specifically represents the fixed 0.8V output version housed in the SOT-223-5 package, designed for portable computing and networking infrastructure power management.

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

Direct substitutes include other MCP1825 variants with different fixed output voltages such as MCP1825T-1202E/DC (1.2V) or MCP1825T-1802E/DC (1.8V), provided the system voltage requirements are adjusted accordingly. Ensure any replacement maintains the SOT-223-5 pinout compatibility, specifically the placement of the SHDN and PWRGD pins on pins 1 and 5 respectively.