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Product Detailed Parameters
- Description：IC REG LINEAR 5V 2A TO220
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：35V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：2A
- Current - Quiescent (Iq)：8 mA
- Current - Supply (Max)：-
- PSRR：54dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：0°C ~ 150°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The L78S05CV is a three-terminal positive linear voltage regulator from the L78S series, manufactured by STMicroelectronics. It provides a fixed output voltage of 5 V with a maximum output current capability of 2 A when adequate heat sinking is provided. The device accepts an input voltage range from 8 V to 35 V DC. It is housed in a TO-220-3 through-hole package and operates within a temperature range of 0 °C to 150 °C.
Feature Summary
- Integrates internal current limiting, thermal shutdown, and safe area protection for robust operation.
- Provides local on-card regulation to eliminate distribution problems associated with single-point regulation.
- Capable of delivering high output currents up to 2 A with appropriate thermal management.
Applications
- Local on-card voltage regulation
- General-purpose positive power supplies
- Embedded systems requiring stable 5 V rails
Procurement Notes
Verify the specific manufacturer part number against official STMicroelectronics documentation to ensure authenticity. Confirm that the component matches the L78S series specifications, particularly the 2 A current rating and TO-220-3 package type. Check for any obsolescence notices or production change notifications relevant to this specific batch before procurement.
Selection Notes
Select the L78S05CV when a fixed 5 V output at up to 2 A is required. Ensure the design includes sufficient heat sinking to handle the power dissipation, as the device relies on external thermal management for high-current operation. Verify that the input voltage remains within the 8 V to 35 V range under all operating conditions.
Part Context
The L78S05CV belongs to the L78S series of three-terminal positive regulators. This series is designed for applications requiring higher current capabilities than standard L78L devices, offering up to 2 A output. It shares the same pinout and basic functionality as other L78 series regulators but is optimized for higher power delivery in TO-220 packages.
Replacement Considerations
Direct substitutes include other L78S05 variants such as L78S05CT or L78S05CDT, which share the same electrical characteristics and pinout. Ensure replacement parts maintain the 2 A current rating and TO-220 package form factor.
