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Product Detailed Parameters
- Description：IC REG LINEAR 9V 1.5A 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)：2V @ 1A (Typ)
- Current - Output：1.5A
- Current - Quiescent (Iq)：6 mA
- Current - Supply (Max)：-
- PSRR：61dB (120Hz)
- Control Features：-
- Protection Features：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：-
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Overview
The L7809ABV-DG is a three-terminal positive linear voltage regulator from the STMicroelectronics L78 series. It provides a fixed output voltage of 9 V with an output current capability up to 1.5 A, provided adequate heat sinking is utilized. The device features internal thermal overload protection, short-circuit protection, and safe area protection. It is available in surface-mount packages including D2PAK and DPAK.
Feature Summary
- Fixed 9 V output voltage with high output current capability
- Integrated thermal overload and short-circuit protection
- Safe area protection for robust operation
Applications
- Local on-card regulation
- High input voltage circuits
- Light controller voltage regulation
Procurement Notes
Verify the specific suffix 'DG' against official datasheets to confirm package type and temperature range specifications. Ensure compatibility with required mounting styles such as SMD/SMT. Confirm that the component meets all necessary safety and performance standards for the intended application environment.
Selection Notes
Select this regulator for applications requiring a stable 9 V supply with currents exceeding standard low-dropout alternatives. Consider the thermal management requirements due to the linear topology. Verify that the input voltage remains within the specified maximum limits to ensure proper regulation and device safety.
Part Context
This component belongs to the L78 series of three-terminal positive regulators. The series offers various fixed output voltages and multiple package options like TO-220, TO-220FP, D2PAK, and DPAK. These devices are designed for local regulation, eliminating distribution problems associated with single-point regulation systems.
Replacement Considerations
Compatible substitutes include other L78 series variants with identical 9 V output and similar current ratings. Verify pinout compatibility and thermal characteristics when replacing. Ensure the replacement part supports the required operating temperature range and package style.
