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Product Detailed Parameters
- Description：IC REG LINEAR 9V 1.5A D2PAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：Surface Mount
- Package / Case：TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Supplier Device Package：D2PAK
- Grade：-
- Qualification：-
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Overview
The L7809ABD2T-TR is a fixed positive linear voltage regulator from the STMicroelectronics L78 series, delivering a nominal 9.0V output with a maximum current capacity of 1.5A. It utilizes a surface-mount D2PAK-3 package and operates within an input voltage range up to 35V. The device functions reliably across a temperature spectrum from -40°C to +125°C, featuring a typical quiescent current of 4.3mA. Internal protections include current limiting, thermal shutdown, and safe area protection.
Feature Summary
- Integrated internal current limiting and thermal shutdown mechanisms for robust operation under fault conditions
- Fixed 9V output regulation suitable for local on-card power distribution applications
- Surface-mount D2PAK-3 packaging designed for automated assembly processes
Applications
- Local on-card voltage regulation in electronic circuits
- Power supplies requiring stable 9V DC output
- General-purpose positive voltage regulation tasks
Procurement Notes
Verify the specific suffix 'TR' indicates tape-and-reel packaging configuration distinct from bulk or cut-tape variants. Confirm the 'ABD2' designation aligns with the required D2PAK-3 surface-mount package type. Ensure the 'L7809A' prefix matches the intended 9V fixed output specification and performance grade requirements for your design.
Selection Notes
Select this component when a fixed 9V output is required with high current capability up to 1.5A in a surface-mount format. Consider the D2PAK-3 package for thermal management needs compared to smaller alternatives. Evaluate the operating temperature range of -40°C to +125°C against environmental constraints. Verify input voltage stability remains within the 35V maximum limit during all operational phases.
Part Context
This part belongs to the STMicroelectronics L78xx family of three-terminal positive regulators. The series offers various fixed output voltages and packages including TO-220, TO-220FP, D2PAK, and DPAK. These regulators are engineered to eliminate single-point regulation issues by providing local on-card control with embedded safety features.
Replacement Considerations
Compatible substitutes within the same family include L7809CD2T-TR and L7808ABD2T-TR, which share similar packaging and protection features but differ in output voltage or specific sub-series characteristics.
