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Product Detailed Parameters
- Description：IC REG LINEAR 15V 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)：15V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：2A
- Current - Quiescent (Iq)：8 mA
- Current - Supply (Max)：-
- PSRR：46dB (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 L78S15CV-DG is a three-terminal positive linear voltage regulator from the STMicroelectronics L78S series, housed in a TO-220 package. It provides a fixed output voltage of 15 V with a maximum output current capability of 2 A. The device accepts an input voltage range up to 35 V and operates within a junction temperature range of 0°C to 150°C. Key electrical characteristics include a typical quiescent current of 8 mA and a dropout voltage of approximately 2 V at 1 A load.
Feature Summary
- Provides local on-card regulation to eliminate distribution problems associated with single-point regulation.
- Embeds internal current limiting, thermal shut-down, and safe area protection for robust operation.
- Capable of delivering over 2 A output current when adequate heat sinking is provided.
Applications
- General-purpose power supply units requiring stable 15 V rails.
- Battery chargers utilizing local regulation.
- Industrial equipment needing reliable positive voltage regulation.
Procurement Notes
Verify the specific suffix 'DG' against the manufacturer's official datasheet to confirm it denotes the standard TO-220 package variant without additional functional changes. Ensure that the procurement documentation explicitly references the L78S series specifications, particularly the 2 A current rating, which distinguishes this model from the lower-current L78C or L78L series. Cross-reference the part number with the latest STMicroelectronics ordering information to confirm availability and compliance status.
Selection Notes
Select this component when a fixed 15 V output with high current capacity (up to 2 A) is required in a through-hole TO-220 package. It is suitable for applications where the input voltage exceeds the output by at least 2 V. Consider thermal management requirements carefully, as the device dissipates significant power at higher currents. This regulator is appropriate for designs prioritizing simplicity and built-in protection features over low-dropout performance.
Part Context
The L78S15CV-DG belongs to the L78S family of three-terminal positive regulators, designed for higher current applications compared to the L78C series. These regulators are widely used in electronic industries for local card-level regulation. The L78S series maintains compatibility with the original LM78S architecture while offering enhanced reliability through integrated safety protections like thermal shutdown and current limiting.
Replacement Considerations
Compatible substitutes include the L78S15CV and other L78S series variants with identical pinouts and electrical ratings. Verify that any replacement part supports the 2 A output current and 35 V maximum input voltage specifications to ensure circuit integrity.
