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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 5A D2PAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.4V @ 5A
- Current - Output：5A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：75dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：0°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 LD1585CD2T18R is a linear voltage regulator IC from STMicroelectronics, providing a fixed positive output of 1.8V with a maximum load current of 5A. It utilizes the D2PAK (TO-252-3) surface-mount package for efficient thermal management and compact board integration. Designed as a low-dropout regulator, it maintains stable regulation under varying input conditions, ensuring reliable power delivery for sensitive electronic circuits requiring precise voltage levels.
Feature Summary
- Provides a fixed positive output voltage of 1.8V
- Supports high continuous load currents up to 5A
- Utilizes D2PAK surface-mount packaging for thermal efficiency
Applications
- Power supply modules for embedded systems
- Voltage regulation in portable electronic devices
- Biasing circuits for RF and analog components
Procurement Notes
Verify the specific manufacturer datasheet for the LD1585CD2T18R to confirm RoHS compliance status and lifecycle stage, as sources indicate conflicting information regarding active versus obsolete status. Ensure the D2PAK package variant matches your PCB footprint requirements. Cross-reference ordering suffixes to guarantee the fixed 1.8V output specification is met without unintended functional variations.
Selection Notes
Select this component when a fixed 1.8V rail is required with high current capability in a surface-mount form factor. The D2PAK package offers superior heat dissipation compared to smaller SOT packages, making it suitable for applications where thermal performance is critical. Ensure input voltage exceeds the dropout threshold to maintain regulation at full 5A load.
Part Context
This part belongs to the LDO voltage regulator category within STMicroelectronics' power management portfolio. It is designed to replace older linear regulators that lack sufficient current handling or thermal efficiency. The device integrates internal protection mechanisms typical of modern linear regulators, though specific details require datasheet verification.
Replacement Considerations
Check for direct pin-compatible alternatives in the same D2PAK package if sourcing is constrained. Verify that substitute parts support the same 1.8V fixed output and 5A current rating. Ensure thermal resistance characteristics are comparable to maintain system reliability.
