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Product Detailed Parameters
- Description：IC REG LINEAR 8V 500MA DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：35V
- Voltage - Output (Min/Fixed)：8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：500mA
- Current - Quiescent (Iq)：6 mA
- Current - Supply (Max)：-
- PSRR：56dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：-
- Qualification：-
Download product information
Overview
The L78M08ABDT-TR is a three-terminal positive linear voltage regulator from the L78MxxA series, manufactured by STMicroelectronics. It provides a fixed output voltage of 8 V with an output current capability up to 500 mA. The device features ±2% output voltage tolerance and operates within an extended temperature range of -40 °C to +125 °C. It is housed in a DPAK surface-mount package.
Feature Summary
- Integrated thermal overload protection shuts down the circuit during excessive power conditions.
- Internal short-circuit protection limits maximum output current to prevent damage.
- Output transistor safe-area protection reduces output current as voltage across the pass transistor increases.
Applications
- Local on-card regulation for electronic circuits
- Power supplies requiring fixed 8 V output
- Battery chargers
Procurement Notes
Verify that the component matches the specific L78M08ABDT-TR designation to ensure the correct 8 V output voltage and AB grade tolerance. Confirm the DPAK package type aligns with PCB footprint requirements. Check datasheet specifications for thermal resistance values to ensure adequate heat sinking is provided for the intended load current.
Selection Notes
Select this regulator when a fixed 8 V supply is required with moderate current demands up to 500 mA. The AB variant offers tighter voltage tolerance compared to standard versions. Ensure the input voltage remains within the maximum rating of 35 V and consider thermal management due to the linear regulation topology.
Part Context
This component belongs to the L78MxxA family of precision regulators. The 'M' suffix indicates a 500 mA current class, distinguishing it from the higher current L78 series. The 'AB' designation specifies the extended temperature range and improved voltage tolerance characteristics.
Replacement Considerations
L78M08CDT-TR
FAQ
What is the maximum input voltage for the L78M08ABDT-TR?
The maximum DC input voltage is 35 V for output voltages between 5 V and 18 V.
Does the L78M08ABDT-TR include protection features?
Yes, it includes internal current limiting, thermal shutdown, and safe area protection.
