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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：-40°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
Download product information
Overview
The L78M09ABV is a three-terminal positive linear voltage regulator from the L78MxxA series by STMicroelectronics. It provides a fixed output voltage of 9 V with an output current capability up to 0.5 A. The device operates within an input voltage range of 11.5 V to 24 V and maintains a tight output voltage tolerance of ±2%. It features internal thermal overload protection, short-circuit protection, and safe area protection. The component is available in TO-220 and DPAK packages and is guaranteed to operate across an extended temperature range of -40 °C to 125 °C.
Feature Summary
- Provides local on-card regulation to eliminate distribution problems associated with single-point regulation.
- Incorporates internal current limiting, thermal shutdown, and safe area protection for robust operation.
- Delivers precise fixed voltage regulation with ±2% output voltage tolerance.
- Capable of delivering over 0.5 A output current when adequate heat sinking is provided.
Applications
- Local on-card voltage regulation
- Adjustable voltage and current circuits using external components
- General-purpose power supply management
Procurement Notes
Verify the specific ordering suffix 'V' against official manufacturer documentation to confirm package type and environmental compliance grade. Ensure the procurement channel sources genuine STMicroelectronics products to guarantee adherence to the specified electrical characteristics and reliability standards defined in the datasheet.
Selection Notes
Select this component for applications requiring a fixed 9 V output with moderate current demands up to 0.5 A. The L78M09ABV is suitable for designs needing high precision due to its ±2% tolerance and extended temperature range. Consider thermal management requirements as the device relies on internal protection mechanisms and may require heat sinking for sustained high-current operation.
Part Context
The L78M09ABV belongs to the L78MxxA series of precision regulators, which are part of the broader L78 family of three-terminal positive regulators. This series is designed for applications requiring reliable local regulation with enhanced performance specifications compared to standard variants, offering improved voltage tolerance and guaranteed operation in extended temperature environments.
Replacement Considerations
L78M09AC: Offers similar functionality but with a different operating temperature range (0 °C to 125 °C) and potentially different tolerance specifications.
FAQ
What is the maximum output current for the L78M09ABV?
The L78M09ABV can deliver an output current up to 0.5 A. With adequate heat sinking, it can provide slightly more than 0.5 A.
Does the L78M09ABV include protection features?
Yes, the device includes internal current limiting, thermal overload protection, and output transistor safe-area compensation.
