MCP1755S-3302E/DB

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

The MCP1755S-3302E/DB is a fixed-output Low-Dropout (LDO) voltage regulator from the MCP1755 family, manufactured by Microchip Technology. It provides a nominal output voltage of 3.3 V with a maximum output current capability 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 68.0 µA. It incorporates a Power Good (PWRGD) output and a Shutdown (SHDN) input for system control. The component is housed in a SOT-223-3 surface-mount package.

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

• Includes a Power Good (PWRGD) open-drain output that signals when the regulated voltage reaches approximately 92% of its nominal value.
• Features a dedicated Shutdown (SHDN) input pin that enables low-power standby mode when pulled to a logic low level.
• Provides true current foldback protection that gracefully reduces output current during short-circuit or overload conditions.

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

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

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

Verify the specific suffix 'DB' corresponds to the SOT-223-3 package configuration as defined in the official datasheet. Confirm the 'E' designation indicates compliance with RoHS standards and absence of halogenated materials. Ensure the ordering code matches the exact electrical specifications required for the target application design.

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

Select this component for applications requiring high performance at moderate currents with a wide input voltage range up to 16 V. It is suitable for designs needing integrated status monitoring via the PWRGD pin and precise shutdown control. Verify that the thermal dissipation capabilities of the SOT-223-3 package are sufficient for the expected ambient temperature and load conditions.

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

This part belongs to the MCP1755/MCP1755S family of CMOS LDO regulators designed for battery-powered devices. The 'S' variant specifically denotes availability in the SOT-223-3 package, distinguishing it from other package options like SOT-23-5 or DFN-8 found within the broader product line.

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

Consult the manufacturer's documentation for direct pin-compatible alternatives within the same series. Cross-reference specific package dimensions and thermal characteristics when evaluating substitute components from other manufacturers.