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Product Detailed Parameters
- Description：IC REG LINEAR -20V 1.5A TO220
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Negative
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：-35V
- Voltage - Output (Min/Fixed)：-20V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.1V @ 1A (Typ)
- Current - Output：1.5A
- Current - Quiescent (Iq)：3 mA
- Current - Supply (Max)：-
- PSRR：60dB (120Hz)
- Control Features：-
- Protection Features：Over Temperature, Short Circuit
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The L7920CV is a fixed negative voltage regulator from the STMicroelectronics L79xxC series. It provides a fixed output of -20 V with a maximum output current of 1.5 A. The device supports an input voltage range up to -35 V and operates within a junction temperature range of 0°C to +150°C. It features thermal overload protection, short circuit protection, and output transition SOA protection. The component is housed in a TO-220-3 through-hole package.
Feature Summary
- Provides local on-card regulation for negative power supplies
- Includes built-in thermal overload and short circuit protection
- Compatible with split power supply architectures
Applications
- Split power supply systems
- Local on-card voltage regulation
- Negative rail generation in electronic circuits
Procurement Notes
Verify the specific suffix 'CV' against the manufacturer's official datasheet to confirm the package type and pinout configuration. Ensure that the procurement documentation explicitly lists the part as an active component within the L79xxC series to guarantee compatibility with intended design specifications.
Selection Notes
Select this component when a stable -20 V negative rail is required for analog or digital circuits. Consider the thermal management requirements associated with delivering up to 1.5 A in a TO-220 package. Verify that the input voltage does not exceed the maximum rating of -35 V under all operating conditions.
Part Context
This part belongs to the L79xxC family of three-terminal negative regulators manufactured by STMicroelectronics. The series offers various fixed output voltages to complement the L78xx positive regulator series. These devices are designed for general-purpose linear regulation applications requiring reliable performance and robust internal protection mechanisms.
Replacement Considerations
Cross-reference with other manufacturers' -20 V negative regulators such as the LM7920 or equivalent TO-220 packaged parts. Verify pin compatibility and thermal characteristics before substitution.
