MC78L18ACPRMG

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

The MC78L18ACPRMG is a positive voltage regulator from the MC78L00A series, manufactured by onsemi. It provides a fixed output voltage of 18 V with a maximum output current of 100 mA. The device operates within an input voltage range of 20.7 V to 35 V and supports junction temperatures from 0°C to +125°C. Key electrical characteristics include a line regulation of 275 mV and load regulation of 85 mV at typical conditions. It features internal short circuit current limiting and thermal overload protection.

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

• Internal short circuit current limiting protects against output faults.
• Thermal overload protection shuts down the circuit during excessive power conditions.
• Fixed output voltage eliminates the need for external feedback components in many applications.

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

• Power supply circuits requiring regulated 18 V DC
• Low current electronic systems needing stable voltage rails
• Replacement for zener diode-resistor combinations

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

Verify the ordering suffix matches the required package and temperature range. Confirm RoHS compliance status through official documentation. Check for specific automotive qualification requirements if applicable, as standard parts may differ from NCV prefix variants. Ensure the supplier provides valid traceability data.

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

Select this component when a fixed 18 V output is required with up to 100 mA load capability. Consider the TO-92 package constraints for thermal dissipation. Verify that the input voltage remains sufficiently above the output voltage to maintain regulation. Compare line and load regulation specifications against system tolerance requirements.

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

This part belongs to the MC78L00A series of positive voltage regulators. It is designed as a rugged, low-cost solution for applications requiring regulated supplies up to 100 mA. The series includes complementary negative regulators (MC79L00A) and various output voltage options within the same family.

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

Direct replacements include other MC78L18 variants from onsemi such as MC78L18ACPG or MC78L18ABPG, provided the package and temperature range match. Cross-manufacturer equivalents should be verified for pinout compatibility and electrical performance limits.