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Product Detailed Parameters
- Description：IC REG LINEAR 8V 3A D2PAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：14V
- Voltage - Output (Min/Fixed)：8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 3A
- Current - Output：3A
- Current - Quiescent (Iq)：50 mA
- Current - Supply (Max)：100 mA
- PSRR：59dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- 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 LD29300D2T80 is a fixed-output linear voltage regulator from the STMicroelectronics LD29300 series, providing an 8.0 V output with ±1% tolerance at 25°C. It supports up to 3 A of guaranteed output current and features a typical dropout voltage of 0.4 V at full load. The device includes internal current limiting and thermal shutdown protection. It operates within a junction temperature range of -40°C to 125°C and utilizes a D2PAK surface-mount package.
Feature Summary
- High accuracy with ±1% output voltage tolerance at 25°C
- Very low dropout voltage for efficient power management under high loads
- Integrated logic-controlled electronic shutdown function
- Internal current and thermal limit protections
Applications
- Power supply switching post regulation
- Series power supply for monitors
- Series power supply for VCRs and TVs
- Computer systems
- Battery-powered systems
Procurement Notes
Verify the specific ordering suffix 'D2T' confirms the D2PAK package and standard tape-and-reel availability. Confirm that the '80' designation corresponds to the 8.0 V fixed output version. Check datasheet notes regarding minimum operating input voltage requirements relative to the 8.0 V output to ensure proper headroom for the intended application circuit design.
Selection Notes
Select this component when a stable 8.0 V rail is required with high current capability up to 3 A. Ensure the input voltage remains below 14 V to prevent automatic shutdown. Consider the thermal resistance characteristics of the D2PAK package for heat dissipation in enclosed environments. Verify compatibility with the required output capacitor values for stability.
Part Context
This part belongs to the LD29300 series of very low drop voltage regulators designed for high-current applications. The series offers various fixed output voltages and adjustable versions across multiple packages including TO-220, D2PAK, and P2PAK. The LD29300D2T80 specifically utilizes the D2PAK form factor for surface-mount assembly needs.
Replacement Considerations
Compatible substitutes include other LD29300 variants such as LD29300D2M80 or LD29300P2T80, which share identical electrical specifications but differ in packaging type.
