MC79L12ACPRAG

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

The MC79L12ACPRAG is a fixed negative linear voltage regulator from the MC79LxxA series, manufactured by onsemi. It provides a stable -12 V output with a maximum load current of 100 mA. The device operates within an input voltage range of -16.7 V to -35 V and supports junction temperatures up to +125 °C. Packaged in a compact TO-92-3 through-hole format, it features a typical quiescent current of 6 mA. Key performance metrics include a line regulation of 300 mV and a load regulation of 150 mV, ensuring reliable operation for modest current requirements.

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

• Integrated thermal shutdown and current limiting protection mechanisms enhance device ruggedness.
• Fixed -12 V output eliminates the need for external feedback components in standard configurations.
• Compact TO-92-3 package facilitates efficient space utilization in dense circuit board layouts.

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

• On-card negative voltage regulation
• General-purpose power supply circuits requiring negative rails
• Battery-powered systems utilizing negative logic levels

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

Verify the specific suffix ACPRAG against official datasheets to confirm pinout orientation and tape-and-reel packaging specifications. Ensure compatibility with existing PCB footprints designed for TO-92-3 packages. Cross-reference RoHS compliance status with current environmental declarations prior to final procurement approval.

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

Select this component when a fixed -12 V rail is required at currents up to 100 mA. The TO-92-3 package suits applications where surface-mount D2PAK options are unsuitable. Consider the 300 mV line regulation specification for applications sensitive to input voltage fluctuations. Evaluate thermal dissipation requirements based on the expected voltage drop and load current.

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

This part belongs to the MC79L00A series of low-power negative voltage regulators. It serves as a cost-effective alternative to higher-current variants like the MC7912ACTG, which supports 1 A loads but requires larger packages. The MC79L12ACPRAG is optimized for applications prioritizing compact form factors over high power handling capabilities.

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

MC79L12ACP (Bulk Package)

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

Does the MC79L12ACPRAG require external capacitors for stability?

Most applications do not require external components for basic operation, though input and output bypass capacitors are recommended to prevent oscillation and improve transient response.

What is the minimum input voltage required for proper regulation?

The minimum input voltage is -16.7 V, which ensures sufficient headroom for the regulator to maintain a stable -12 V output under full load conditions.