LDI8233-3.3EN

Overview

The LDI8233-3.3EN is a positive fixed linear voltage regulator from Diotec Semiconductor, housed in an SOT-23-5 surface-mount package. It provides a nominal output voltage of 3.3 V with a maximum output current of 100 mA. The device supports input voltages up to 40 V and operates within a temperature range of -40 °C to +85 °C. Key electrical specifications include a typical quiescent current of 5 µA, a dropout voltage of 1.2 V at full load, and a line regulation of 0.01 %/V. The output tolerance is specified at 1 %, ensuring stable performance for low-power applications.

Feature Summary

• Fixed output voltage configuration eliminates external resistor requirements
• Low quiescent current consumption enhances energy efficiency
• Compact SOT-23-5 package facilitates space-constrained designs

Applications

• Battery-powered portable electronics
• Microcontroller power supply rails
• Sensor interface circuits requiring stable 3.3 V logic levels

Procurement Notes

Verify the specific suffix EN against the manufacturer's latest datasheet to confirm pinout compatibility and thermal characteristics. Ensure the procurement source provides valid RoHS compliance documentation. Cross-reference the part number with official distributor catalogs to avoid counterfeit components. Confirm that the SOT-23-5 footprint matches the target PCB design constraints before finalizing orders.

Selection Notes

Select this component when a fixed 3.3 V output is required with minimal external circuitry. The 100 mA current limit suits low-power digital logic rather than high-current loads. Consider the 40 V maximum input rating for systems with variable or higher-voltage sources. The SOT-23-5 package offers a balance between thermal dissipation and board space savings compared to larger packages.

Part Context

This regulator belongs to the LDI8233 series of low-dropout linear voltage regulators manufactured by Diotec Semiconductor. The series includes variants with different output voltages and package options, such as the LDI8233-05U in SOT-89-3. The LDI8233-3.3EN specifically targets applications needing a compact, fixed-voltage solution with moderate current capability.

Replacement Considerations

Direct substitutes may include other 3.3 V LDOs in SOT-23-5 packages from manufacturers like Microchip or STMicroelectronics, provided pinouts are compatible. Verify equivalent current ratings, dropout voltages, and thermal resistance values. Ensure replacement parts meet the same operating temperature range and regulatory compliance standards.