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Product Detailed Parameters
- Description：IC REG LINEAR 9V 1.5A TO220
- Series：L78
- Mfr：Lumimax Optoelectronic Technology
- Package：Bulk
- 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)：2V @ 1A
- Current - Output：1.5A
- Current - Quiescent (Iq)：8 mA
- Current - Supply (Max)：-
- PSRR：55dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-25°C ~ 125°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The L7809 is a fixed positive voltage regulator belonging to the LM78xx series, manufactured by Lumimax Optoelectronic Technology. It provides a nominal output voltage of 9V with a maximum output current capability of 1A. The device incorporates internal circuitry for thermal overload protection and safe area compensation, eliminating the need for external protective components. It is designed for use in applications requiring stable DC power supplies from higher input voltages.
Feature Summary
- Provides a fixed regulated positive output voltage
- Includes internal thermal overload protection
- Features built-in safe area compensation
Applications
- General-purpose linear power supplies
- Local regulation for on-card distribution
- Positive voltage regulators in electronic circuits
Procurement Notes
Verify that the component marked L7809 corresponds specifically to Lumimax Optoelectronic Technology manufacturing. Confirm the package type matches your board layout requirements. Ensure the part number suffix indicates the correct pin configuration and temperature range for your specific application environment before finalizing procurement.
Selection Notes
Select this component when a stable 9V DC supply is required with up to 1A load current. Consider the input-to-output voltage differential to manage heat dissipation effectively. Evaluate the thermal resistance of the chosen package to ensure operation within safe junction temperatures under maximum load conditions.
Part Context
This component is part of the widely adopted three-terminal positive voltage regulator family. It shares functional similarities with industry-standard equivalents like the LM7809. The designation 'L7809' indicates a fixed 9V output variant within this regulatory series, commonly used in consumer and industrial electronics for power conditioning.
Replacement Considerations
Compatible substitutes include LM7809, L7809CV, and UA7809. Verify pinout compatibility and thermal performance characteristics when substituting. Ensure the alternative manufacturer's specifications meet or exceed the original design requirements for voltage regulation and current handling.
