L7805ACD2T

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

The L7805ACD2T is a three-terminal positive linear voltage regulator from the STMicroelectronics L78xx series, housed in a D²PAK surface-mount package. It provides a fixed 5V output with 2% tolerance and supports up to 1.5A output current when adequately heat-sinked. The device operates with a maximum input voltage of 35V and features internal thermal overload protection, short-circuit protection, and safe area compensation.

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

• Integrated thermal overload protection that shuts down the circuit during excessive power overload conditions
• Internal short-circuit protection limits the maximum current passed by the circuit
• Output transistor safe-area compensation reduces output short-circuit current as voltage across the pass transistor increases

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

• Local on-card regulation to eliminate distribution problems associated with single-point regulation
• General-purpose DC-to-DC conversion for electronic circuits
• Power supply sections requiring fixed 5V logic levels

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

Verify the specific suffix 'CD2T' against official STMicroelectronics documentation to confirm the exact tape-and-reel packaging configuration and pinout compatibility. Ensure the ordering code matches the required D²PAK variant for your PCB footprint. Cross-reference the datasheet revision date to confirm compliance with current environmental standards such as RoHS.

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

Select this component for applications requiring a robust, fixed 5V source with high current capability in a surface-mount form factor. The A-grade version ensures tighter output voltage tolerance compared to standard variants. Consider thermal management requirements carefully, as delivering currents near the 1.5A limit necessitates sufficient board copper area or external heatsinking to maintain junction temperature within safe operating limits.

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

This part belongs to the widely used L78xx family of three-terminal positive regulators. These devices are designed for simplicity, requiring no external components for basic operation. The L7805 variant specifically targets 5V systems, serving as a foundational building block in power management architectures where stability and over-protection features are prioritized over low dropout performance.

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

Compatible substitutes include other manufacturers' 7805 SMD equivalents such as the MC7805CDT or LM7805CDT. Verify that replacement parts match the D²PAK package dimensions and thermal characteristics. Ensure the alternative device offers comparable current handling and protection features if replacing in high-stress environments.