MCP1804T-3302I/OT

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

The MCP1804T-3302I/OT is a fixed-output CMOS low dropout (LDO) voltage regulator manufactured by Microchip Technology. It provides a nominal output voltage of 3.3V with a maximum continuous output current of 150mA. The device operates within an input voltage range of 2.0V to 28.0V and features a typical quiescent current of 50µA, reducing to 0.01µA in shutdown mode. It includes a dedicated shutdown pin for power control, overcurrent protection with foldback, and thermal shutdown. The component is housed in a 5-lead SOT-23 package and supports operation across a temperature range of -40°C to +85°C.

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

• Integrated shutdown control pin enables precise power management with ultra-low standby current consumption
• High power supply ripple rejection ratio ensures stable output under varying noise conditions
• Built-in overcurrent limit with foldback and thermal shutdown safeguards against short circuits and overheating

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

• Cordless phones and wireless communication devices
• PDAs, notebook computers, and netbooks
• Digital cameras
• Microcontroller power supplies
• Car audio and navigation systems

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

Verify the specific suffix 'I/OT' corresponds to the industrial temperature grade (-40°C to +85°C) and tape-and-reel packaging format. Confirm that the ordering code matches the 5-lead SOT-23 package variant. Ensure compatibility with required input/output capacitance values for stability. Check for any recent lifecycle status changes or obsolescence notices from the manufacturer before finalizing procurement plans.

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

Select this component when a fixed 3.3V rail is required with moderate current demands up to 150mA. It is suitable for battery-powered applications due to its low quiescent current and wide input voltage range. Consider the SOT-23-5 footprint constraints and ensure adequate thermal dissipation on the PCB. Verify that the load does not exceed the continuous current rating and that input voltage remains within the specified operational limits.

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

This part belongs to the MCP1804 family of CMOS LDO regulators designed for portable electronics. The family offers various fixed output voltages and package options including SOT-89 and SOT-223. The MCP1804 series is characterized by high PSRR and stability with ceramic capacitors, making it a common choice for replacing older bipolar LDOs in modern compact designs requiring efficient power regulation.

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

Direct pin-compatible replacements within the same package may include other MCP1804 variants with different output voltages, provided the voltage requirement is adjusted. Cross-reference with datasheet AN766 for potential upgrades to bipolar LDOs. Ensure any substitute maintains the 150mA current capability and 28V maximum input rating.