MC7808CDTT5

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

The MC7808CDTT5 is a monolithic integrated circuit from the MC7800 series, functioning as a fixed-voltage linear regulator. It provides a nominal output voltage of 8 V with a maximum output current capability exceeding 1.0 A when equipped with adequate heatsinking. The device utilizes the DT suffix to denote a surface-mount DPAK-3 package (Case 369C). Electrical characteristics specify an input voltage range typically between 10.5 V and 23 V for standard operation, with a maximum absolute input rating of 35 V. Internal protections include thermal overload shutdown and short-circuit current limiting.

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

• Integrates internal thermal overload protection that automatically shuts down the circuit during excessive power conditions.
• Features internal short-circuit current limiting to protect the device and load during fault conditions.
• Includes output transistor safe-area compensation to manage current limits across varying voltage differentials.
• Requires no external components for basic fixed-voltage regulation functionality.

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

• Local on-card voltage regulation in electronic assemblies
• Positive voltage regulation for general-purpose power supplies
• Power management sections requiring simple three-terminal regulation

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

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tolerance grade. Confirm RoHS compliance status and lead-free designation requirements for your assembly process. Check for any automotive-specific prefixes if the application demands AEC-Q100 qualification or PPAP capabilities. Ensure the selected variant matches the required thermal resistance and operating temperature range specifications.

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

Select this component for applications requiring a stable 8 V supply with moderate current demands up to 1 A. Consider the DPAK-3 package for surface-mount designs where space efficiency is prioritized over the high-power dissipation capabilities of through-hole packages. Evaluate the dropout voltage requirements to ensure the input voltage remains sufficiently above the output level under all load conditions. Verify thermal management strategies are adequate given the internal power dissipation limits.

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

This part belongs to the broader MC7800 family of positive voltage regulators manufactured by onsemi. The family includes various output voltage options ranging from 5 V to 24 V, differentiated by the last two digits of the part number. The MC7808 variant specifically targets 8 V regulation needs. The series is characterized by its simplicity, robustness, and widespread use in legacy and modern electronic designs requiring reliable linear regulation.

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

Cross-reference with other manufacturers' 8 V, 1 A linear regulators such as the LM7808 or L7808. Verify pinout compatibility and electrical parameter alignment before substitution. Note that while functional equivalents exist, thermal performance and exact tolerance grades may vary between brands.