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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 3A D2PAK-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：14V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 3A
- Current - Output：3A
- Current - Quiescent (Iq)：50 mA
- Current - Supply (Max)：100 mA
- PSRR：72dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Supplier Device Package：D2PAK-3
- Grade：-
- Qualification：-
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Overview
The LD29300D2M18R is a fixed-output linear low-dropout voltage regulator manufactured by STMicroelectronics. It provides a nominal output voltage of 1.8 V with a guaranteed maximum output current of 3 A. The device operates within an input voltage range up to 14 V, exceeding which triggers automatic shutdown. Key electrical parameters include a typical dropout voltage of 0.4 V at full load and a quiescent current of 50 mA at 1.5 A load. It features ±1% output voltage tolerance at 25°C and includes internal overcurrent and thermal protection mechanisms.
Feature Summary
- Very low dropout voltage capability for high-efficiency power delivery under heavy loads
- Logic-controlled electronic shutdown function for system power management
- Integrated thermal and current limiting protection circuits
Applications
- Power supply switching post regulation
- Series power supply for monitors
- Computer systems
- Battery-powered systems
Procurement Notes
Verify the specific package variant D2PAK-3 against design requirements. Confirm that the fixed 1.8 V output aligns with target circuit specifications. Check component status as distribution data indicates potential end-of-life status. Ensure compatibility with standard surface-mount assembly processes for the TO-263 form factor.
Selection Notes
Select this component when a stable 1.8 V rail is required with high current capacity up to 3 A. The low dropout characteristic makes it suitable for applications where input-to-output differential is minimal. Consider the thermal resistance of the D2PAK package for heat dissipation in enclosed environments compared to other available packages in the series.
Part Context
This part belongs to the LD29300xx family of very low drop voltage regulators from STMicroelectronics. The series offers various fixed output voltages ranging from 1.5 V to 8.0 V, alongside an adjustable version. The D2M18R suffix specifically denotes the 1.8 V fixed output configuration housed in the D2PAK surface-mount package.
Replacement Considerations
Compatible substitutes within the same family include LD29300D2T18R (tape/reel) and LD29300P2M18R (P2PAK package). These parts share identical electrical characteristics but differ in packaging or shipping format.
