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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 3A D2PAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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)：1.5V @ 3A
- Current - Output：3A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：72dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Supplier Device Package：D2PAK
- Grade：-
- Qualification：-
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Overview
The LD1085D2T18R is a positive fixed linear voltage regulator manufactured by STMicroelectronics, delivering a stable 1.8V output at up to 3A of current. It operates with a maximum input voltage of 30V and features a typical dropout voltage of 1.5V at full load. The device incorporates internal thermal overload and current limit protection mechanisms. It utilizes a D2PAK surface-mount package and supports an operating temperature range from -40°C to 125°C.
Feature Summary
- Provides high-output current capability for demanding power supply applications
- Integrates comprehensive protection against overcurrent and thermal stress conditions
- Ensures stable regulation with low quiescent current consumption
Applications
- General-purpose power supply distribution systems
- Biasing circuits for analog and digital components requiring 1.8V rails
- Pre-regulator stages for switching converter topologies
Procurement Notes
Verify component authenticity through authorized channels due to potential availability of counterfeit units. Confirm RoHS compliance status as specifications may vary across production batches. Ensure proper handling procedures are followed during assembly to prevent electrostatic discharge damage to the semiconductor junctions.
Selection Notes
Select this regulator when a fixed 1.8V output is required with significant current capacity. Evaluate thermal management requirements based on the specific input-to-output voltage differential and ambient operating conditions. Consider the D2PAK package dimensions for PCB layout constraints and heat dissipation needs.
Part Context
This component belongs to the LD1085 family of low-dropout regulators designed for high-current applications. The series offers various fixed output voltages and adjustable versions to accommodate diverse system requirements. These regulators are engineered for robust performance in industrial and consumer electronics environments.
Replacement Considerations
LD1085DT18R (DPAK package variant)
FAQ
What is the maximum input voltage supported by the LD1085D2T18R?
The device supports a maximum input voltage of 30V.
Does the LD1085D2T18R include built-in protection features?
Yes, it includes internal thermal overload and current limit protection.
