MC7805CT

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

The MC7805CT is a monolithic integrated circuit fixed-voltage regulator from the MC78xx series by onsemi. It provides a nominal 5 V output with a maximum continuous current exceeding 1.0 A when adequately heatsunk. The device accepts an input voltage range of up to 35 Vdc and operates within a junction temperature range of 0°C to 125°C for the 'C' suffix variant. It utilizes a TO-220 package with three leads, featuring internal thermal overload protection, short-circuit current limiting, and safe-area compensation.

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

• Internal thermal overload protection shuts down the circuit during excessive power conditions
• Internal short-circuit current limiting protects against output faults
• Output transistor safe-area compensation reduces short-circuit current as voltage across the pass transistor increases
• Requires no external components for standard fixed-voltage regulation applications

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

• Local on-card regulation
• Positive voltage regulation in power supplies
• Pre-regulator stages for adjustable regulators

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

Verify the specific suffix 'CT' corresponds to the TO-220 through-hole package and 'C' tolerance grade (4%) in official datasheets. Confirm RoHS compliance status and ensure the ordering code matches the required lead form and tape/reel or tube packaging specifications provided by the manufacturer.

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

Select this component for applications requiring a simple, robust 5 V fixed supply. Ensure the input voltage remains at least 2.0 V above the output voltage to maintain regulation. Consider thermal resistance and heatsinking requirements if operating near the 1.0 A current limit to prevent thermal shutdown.

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

This part belongs to the MC7800 series of positive linear voltage regulators. The 'MC7805' designation indicates a 5 V fixed output. The 'C' suffix typically denotes a commercial temperature range and 4% output voltage tolerance, while 'T' indicates the TO-220 package style. It is a legacy industry-standard regulator design.

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

Direct pin-compatible substitutes include LM7805 variants from other manufacturers such as Texas Instruments or STMicroelectronics, provided they meet the same electrical specifications and package dimensions.