MCP1755T-5002E/OT

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

The MCP1755T-5002E/OT is a fixed-output CMOS Low-Dropout (LDO) voltage regulator from the MCP1755 family, manufactured by Microchip Technology. It provides a fixed 5 V output with a maximum current of 300 mA. The device operates within an input voltage range of 3.6 V to 16.0 V and features a typical quiescent current of 68 µA. It includes a shutdown input and a power good output. The unit is housed in a surface-mount SOT-23-5 package.

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

• Includes a shutdown input for low-power standby modes and a power good open-drain output indicating regulation status.
• Features true current foldback protection that gracefully reduces output current during short-circuit conditions.
• Capable of delivering 300 mA output current while maintaining a low dropout voltage of approximately 300 mV at full load.
• Stable with minimum 1.0 µF ceramic output capacitance.

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

• Battery-powered alarm circuits
• Smoke detectors
• CO2 detectors
• Microcontroller power supplies

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

Verify the specific suffix 'E/OT' corresponds to the SOT-23-5 package and tape-and-reel packaging format. Confirm compliance with RoHS directives and AEC-Q100 automotive reliability standards as specified in the manufacturer datasheet DS20005160B before finalizing procurement specifications.

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

Select this component when a fixed 5 V rail is required from a 3.6 V to 16 V source. Ensure the application requires a maximum load current of 300 mA or less. Verify that the PCB layout supports the thermal requirements of the SOT-23-5 package under expected ambient temperatures and power dissipation levels.

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

This part belongs to the MCP1755/MCP1755S family of high-performance LDO regulators. The family offers various output voltages and packages, including SOT-223-5 and DFN-8. The MCP1755 variant specifically distinguishes itself by providing dedicated shutdown and power good control pins compared to other simplified variants.

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

MCP1755T-5002E/OTTR

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

What is the function of the PWRGD pin?

The PWRGD pin is an open-drain output that indicates when the LDO output voltage is within 92% of its nominal value. It has a typical hysteresis of 2% and a delay of 100 µs after the output reaches regulation.

How does the device handle short-circuit conditions?

The device utilizes true current foldback protection. When the load impedance decreases significantly, the output current and voltage gracefully fold back towards 30 mA at approximately 0 V output to prevent damage.