MCP1804T-J002I/MB

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

The MCP1804T-J002I/MB is a fixed-output CMOS low dropout (LDO) voltage regulator manufactured by Microchip Technology. It provides a nominal output voltage of 12.0V with a maximum continuous output current of 150 mA. The device operates within an input voltage range of 2.0V to 28.0V and maintains an output voltage accuracy of ±2%. It features a typical quiescent current of 50 µA and includes a shutdown pin that reduces standby current to 0.01 µA. The component is housed in a 3-lead SOT-89 package and supports operation across an ambient temperature range of -40°C to +85°C.

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

• Integrated shutdown control for enabling or disabling the regulated output, minimizing power consumption during inactive periods.
• Built-in overcurrent protection utilizing current foldback circuitry to limit short-circuit currents and safeguard the device.
• Capable of stable operation using standard ceramic, tantalum, or aluminum electrolytic capacitors at both input and output terminals.

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

• Powering microcontroller units in embedded systems
• Portable digital cameras and consumer electronics
• Wireless communications equipment and cordless phones

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

Verify the specific suffix 'J' against official Microchip documentation to confirm the exact output voltage tolerance and availability status. Ensure the selected SOT-89 package variant matches the required thermal dissipation capabilities for the target application environment. Cross-reference the ordering code with authorized distributors to confirm authenticity and traceability.

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

Select this component when a fixed 12V rail is required from a variable input source up to 28V. Consider the 150mA current limit and thermal resistance characteristics of the SOT-89 package for heat management. Evaluate the need for the shutdown feature versus tying the pin high if power saving is not critical. Verify capacitor ESR requirements for stability under expected load conditions.

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

This part belongs to the MCP1804 family of micropower LDO regulators designed for battery-powered applications. The family offers various fixed output voltages and package options including SOT-23-5, SOT-89-3, and SOT-223-3. The J002 designation specifically indicates the 12.0V output variant within this standardized product line.

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

Consult Microchip datasheets for pin-compatible alternatives such as other MCP1804 variants with different output voltages. Verify electrical parameters match before substituting with generic LDOs.

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

What is the function of the SHDN pin on the MCP1804?

The SHDN pin enables or disables the regulator output. A logic-high level activates the output, while a logic-low level shuts it down, reducing quiescent current to 0.01 µA.

Is the MCP1804 stable with ceramic output capacitors?

Yes, the MCP1804 is explicitly designed to be stable with ceramic output capacitors, typically requiring between 0.1 µF and 1.0 µF for proper operation.