L5150CJ

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

The L5150CJ is an automotive-grade low dropout linear regulator manufactured by STMicroelectronics, housed in a SOIC-12 package. It provides a fixed 5 V output with ±2% accuracy and supports up to 150 mA of output current. The device operates within a DC supply voltage range of 5.6 V to 40 V and features a typical quiescent current of 55 μA. It includes integrated power-on reset, low-voltage reset, and early warning circuits. The regulator ensures stability with low-value ceramic capacitors and offers thermal shutdown and short-circuit protection across a junction temperature range of -40 °C to 150 °C.

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

• Integrated microprocessor control functions including power-on reset, low-voltage reset, and early warning monitoring.
• Adjustable reset threshold down to 3.5 V using an external voltage divider for flexible system supervision.
• High output voltage accuracy maintained over wide temperature, line, and load variations due to on-chip trimming.
• Requires only low-value ceramic capacitors on the output for stability, simplifying design and reducing component count.

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

• Automotive electronic systems requiring AEC-Q100 qualified power management
• Microprocessor power supply circuits with integrated reset functionality
• Systems needing early warning detection for input voltage drops

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

Verify the specific suffix (e.g., CJ vs. CJTR) to confirm packaging type, as tube and reel variants exist. Confirm availability status, as some listings indicate Not Recommended for New Design (NRND) status. Ensure the selected variant matches the required operating temperature range and package style for your application. Cross-reference the datasheet revision to ensure compatibility with existing designs.

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

Select this component when a fixed 5 V output with high precision is required for automotive applications. Consider the L5150CJ if integrated reset and early warning features are necessary to simplify system supervision. Evaluate the 40 V maximum input voltage against your system's supply rails. Verify that the SOIC-12 package fits your PCB layout constraints and thermal requirements.

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

The L5150CJ belongs to the L5150CJ series of multifunction LDO regulators designed for automotive environments. It is part of STMicroelectronics' portfolio of PMICs tailored for robust power management in vehicles. The series emphasizes reliability through AEC-Q100 qualification and comprehensive protection features, making it suitable for critical automotive electronics where stable voltage regulation and system monitoring are essential.

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

Publicly confirmed substitute part numbers are not available in the provided documentation. Check for updated revisions or alternative packages within the same family if the current part is discontinued or unavailable.