L4925PD

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

The L4925PD is a monolithic integrated low-dropout voltage regulator manufactured by STMicroelectronics, designed for automotive and microcomputer-controlled systems. It provides a fixed 5V output with a maximum current capability of 500mA. The device operates within an input voltage range of 6V to 28V, featuring a dropout voltage of less than 0.6V. Key electrical parameters include a quiescent current of 360µA, line regulation of 10mV, and load regulation of 50mV. It includes built-in thermal shutdown and short-circuit protection, along with a power-on reset circuit sensing the output voltage.

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

• Integrated power-on reset circuit that monitors the regulated output voltage
• Programmable reset pulse delay time controlled by an external capacitor
• Very low dropout voltage performance ensuring efficient operation under varying load conditions
• Built-in thermal shutdown and short-circuit protection for enhanced system reliability

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

• Automotive electronic systems requiring stable 5V power supply
• Microcomputer-controlled embedded systems
• Circuits requiring precise power-on reset sequencing

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

Verify component authenticity through authorized distributors as this part may be obsolete or end-of-life. Confirm package integrity and moisture sensitivity level handling requirements prior to assembly. Check for available replacement alternatives from the manufacturer if long-term supply stability is required for production.

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

Select this regulator when a fixed 5V output with integrated reset functionality is needed for automotive or industrial applications. Ensure input voltage remains within the 6V to 28V range and verify that the 500mA load current does not exceed thermal limits in the SOIC-20 package.

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

The L4925 belongs to the L4925 series of very low drop voltage regulators. It is specifically engineered for high-reliability environments, offering high precision output voltage and extremely low quiescent current. The series supports wide operating temperature ranges suitable for harsh automotive conditions.

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

Check for direct pin-compatible substitutes within the same L4925 family or newer automotive-grade LDOs with similar reset features. Verify that any replacement maintains the 5V fixed output, 500mA current rating, and SOIC-20 package form factor.