LD29300D2M50R

Overview

The LD29300D2M50R is a fixed-output linear low-dropout voltage regulator manufactured by STMicroelectronics, providing a nominal output of 5.0 V with a maximum guaranteed load current of 3 A. It utilizes a D2PAK surface-mount package and operates within an input voltage range up to 14 V, exceeding which triggers automatic shutdown. The device maintains high accuracy with ±1% tolerance at 25°C and features very low dropout characteristics, typically 0.4 V at full load. Integrated protection mechanisms include internal current limiting and thermal shutdown, ensuring reliability under overload conditions.

Feature Summary

• Guarantees high output current capability up to 3 A for demanding power loads
• Features very low dropout voltage to maintain regulation with minimal input-to-output differential
• Includes logic-controlled electronic shutdown for efficient system power management
• Provides internal current and thermal limit protections against fault conditions

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 'D2M' confirms the D2PAK package and tape-and-reel delivery format. Confirm the '50' designation corresponds to the fixed 5.0 V output variant. Check for RoHS compliance status and ensure the component meets the required operating temperature range specifications for the target application environment before finalizing procurement.

Selection Notes

Select this regulator when a stable 5.0 V rail is required with high current demands up to 3 A. Ensure the input voltage remains below 14 V to prevent unintended shutdown activation. Consider the thermal resistance of the D2PAK package and implement adequate heatsinking if the junction-to-ambient thermal dissipation exceeds safe limits during continuous operation at high load currents.

Part Context

This component belongs to the LD29300xx series of high-current, high-accuracy low-dropout regulators. The series offers various fixed output voltages and adjustable options across multiple package types including TO-220, D2PAK, and P2PAK. The LD29300D2M50R specifically represents the 5.0 V fixed version in the D2PAK form factor, designed for applications requiring robust performance in compact surface-mount layouts.

Replacement Considerations

Compatible substitutes within the same family include LD29300P2M50R (P2PAK package) or LD29300D2T50R (through-hole D2PAK). Verify pin compatibility and thermal requirements when transitioning between package styles.