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L7805CDT is listed in the Voltage Regulators - Linear, Low Drop Out (LDO) Regulators range at ChipApex. The manufacturer field lists STMicroelectronics. Its product description is IC REG LINEAR 5V 1.5A DPAK. Review the specifications below when checking this part for your BOM.
The L7805CDT-TR is a positive linear voltage regulator from the STMicroelectronics L78 series, housed in a surface-mount DPAK (TO-252-3) package. It provides a fixed 5 V output with a maximum continuous current of 1.5 A and a maximum input voltage of 35 V. The device features internal thermal overload protection, short-circuit protection, and safe operating area (SOA) protection. Operating temperature range is 0°C to +125°C, with a typical power supply rejection ratio of 62 dB at 120 Hz.
Verify the specific suffix against official datasheets, as variations like -TR indicate tape-and-reel packaging while others may differ. Confirm RoHS compliance status and ensure the manufacturer part number matches the exact ordering code required for your bill of materials to avoid functional or packaging mismatches.
Select this component when a surface-mount solution is required for standard 5 V regulation. Ensure the application can accommodate the thermal dissipation limits of the TO-252-3 package at full load. Verify that the input voltage remains within the 35 V maximum limit under all transient conditions.
This device belongs to the widely used L78xx family of three-terminal positive linear regulators. The L7805 variant specifically sets the output to 5 V. The 'CDT' designation identifies the specific package type and temperature grade, distinguishing it from through-hole equivalents like the L7805CV.
MC7805BDTG by onsemi is a documented similar replacement option.
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