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Product Detailed Parameters
- Description：IC REG LINEAR 9V 500MA TO220
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：35V
- Voltage - Output (Min/Fixed)：9V
- 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：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 L78M09CV is a three-terminal positive linear voltage regulator from the STMicroelectronics L78 series, housed in a TO-220-3 package. It provides a fixed output voltage of 9 V with a maximum output current of 500 mA. The device accepts an input voltage range from 15 V to 35 V. Internal protections include thermal overload shutdown, short-circuit protection, and safe operating area (SOA) protection. The component operates within a temperature range of 0 °C to 125 °C.
Feature Summary
- Integrates internal current limiting and thermal shut-down mechanisms for robust operation under fault conditions.
- Provides local on-card regulation to eliminate distribution problems associated with single-point regulation systems.
- Features built-in safe area protection to ensure stability during output transitions.
Applications
- Local on-card voltage regulation
- General-purpose power supply circuits
- Embedded system power management
Procurement Notes
Verify the specific suffix 'CV' against the manufacturer's official datasheet to confirm pinout compatibility and package dimensions. Confirm RoHS compliance status as manufacturing processes may evolve. Check for End-of-Life notices or Product Change Notifications that could affect long-term availability. Ensure the supplier source is authorized to guarantee component authenticity.
Selection Notes
Select this component when a fixed 9 V output is required with moderate current demands up to 500 mA. Consider the TO-220-3 package for through-hole mounting requirements. Evaluate thermal dissipation needs based on the difference between input and output voltages. Verify that the input voltage remains within the specified 15 V to 35 V range for proper regulation.
Part Context
This part belongs to the L78 series of three-terminal positive regulators, designed for wide-ranging applications. The series offers various fixed output voltages and packages including TO-220, D²PAK, and DPAK. These regulators are engineered to deliver reliable performance with integrated protection features, making them suitable for eliminating single-point regulation issues in electronic designs.
Replacement Considerations
MC7809CTG by onsemi is documented as a similar replacement option.
FAQ
What internal protections does the L78M09CV include?
The device embeds internal current limiting, thermal shut-down, and safe area protection to prevent damage under fault conditions.
Can the L78M09CV be used for adjustable voltage outputs?
Although designed primarily as a fixed voltage regulator, it can be used with external components to obtain adjustable voltage and currents.
