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LR7809 is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Microchip Technology. Its product description is CUSTOM. Review the specifications below when checking this part for your BOM.
Voltage Regulators - DC DC Switching Regulators specifications for LR7809
- Description：CUSTOM
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Function：-
- Output Configuration：-
- Topology：-
- Output Type：-
- Number of Outputs：-
- Voltage - Input (Min)：-
- Voltage - Input (Max)：-
- Voltage - Output (Min/Fixed)：-
- Voltage - Output (Max)：-
- Current - Output：-
- Frequency - Switching：-
- Synchronous Rectifier：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
Voltage Regulators - DC DC Switching Regulators datasheet and documents for LR7809
Voltage Regulators - DC DC Switching Regulators Overview
The LR7809 is a linear voltage regulator manufactured by Microchip Technology. It belongs to the L78 series of positive fixed-output regulators, providing a stable 9V output. The device is designed for applications requiring reliable power regulation with simple external component requirements. It supports through-hole and surface-mount installation styles in packages such as TO-220-3 and DPAK. The regulator operates within a specified input voltage range and offers thermal protection features typical of the L78 family.
Voltage Regulators - DC DC Switching Regulators Feature Summary
- Provides a fixed positive 9V output voltage
- Includes internal thermal overload and current limiting protection
- Supports both through-hole and surface-mount mounting styles
Voltage Regulators - DC DC Switching Regulators Applications
- General-purpose power supply regulation
- Embedded system voltage stabilization
- Industrial control circuit power conditioning
Voltage Regulators - DC DC Switching Regulators Procurement Notes
Verify the manufacturer designation carefully, as the L78 series is historically associated with STMicroelectronics. Confirm that Microchip Technology explicitly lists the LR7809 in their official product portfolio or authorized distributor catalogs before procurement. Ensure the part number matches the specific package and temperature rating required for your application design.
Voltage Regulators - DC DC Switching Regulators Selection Notes
Select this component when a fixed 9V regulated output is required from a higher DC input source. Consider the thermal dissipation capabilities based on the chosen package (TO-220 vs DPAK) and the expected load current. Verify input voltage constraints to ensure sufficient dropout voltage is maintained for proper regulation under all operating conditions.
Voltage Regulators - DC DC Switching Regulators Part Context
The LR7809 is part of the broader L78 series of three-terminal linear regulators. This series is widely recognized for its simplicity and robustness in basic voltage regulation tasks. While the L78 naming convention is common across multiple manufacturers, the LR prefix indicates Microchip Technology's specific variant or sourcing of this standard regulator topology.
Voltage Regulators - DC DC Switching Regulators Replacement Considerations
Compatible substitutes include the STMicroelectronics L7809ABU or L7809ACD depending on the required package and tolerance. Other manufacturers offering equivalent L7809 parts should be verified for pinout compatibility and electrical specifications matching the original design requirements.
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