ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 3A D2PAK-3
- 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)：3.3V
- 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-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Supplier Device Package：D2PAK-3
- Grade：-
- Qualification：-
Download product information
Overview
The LD1085D2M33R is a fixed positive low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 3.3V output with a maximum continuous current capability of 3A. The device operates within an input voltage range up to 30V and maintains stability with minimal external components, requiring only a 10µF capacitor. It features a dropout voltage of 1.5V at full load and offers high line regulation of 6mV and load regulation of 15mV. The unit is housed in a D2PAK surface-mount package with thermal protection.
Feature Summary
- Fixed 3.3V output with ±1% accuracy
- High current delivery up to 3A
- Integrated overcurrent and thermal shutdown protection
Applications
- Power management systems
- Battery-powered equipment
- Post-regulation for switching supplies
Procurement Notes
Verify the specific suffix 'M' against official datasheets to confirm the four-pin D2PAK configuration, as it differs from standard three-pin variants. Ensure compatibility with RoHS3 standards and check for SVHC presence before integration into final assemblies.
Selection Notes
Select this component when a fixed 3.3V rail is required with high current capacity in a compact surface-mount form factor. The D2PAK package facilitates efficient heat dissipation compared to smaller SOT packages, making it suitable for applications where thermal performance is critical alongside power density.
Part Context
This part belongs to the LD1085 series of adjustable and fixed LDO regulators. The series is designed to replace older three-terminal adjustable regulators while offering superior dropout voltage characteristics and output tolerance. It utilizes PNP-based architecture to minimize quiescent current loss, enhancing overall system efficiency.
Replacement Considerations
LD1085D2T33R (Three-pin variant)
FAQ
What is the difference between LD1085D2T33R and LD1085D2M33R?
The primary difference is the package pin count; the D2M variant uses a four-pin D2PAK (3+Tab) configuration, whereas the D2T variant typically uses a three-pin TO-263/D2PAK configuration.
Does the LD1085D2M33R include protection features?
Yes, the device includes internal circuitry for overcurrent limiting and thermal shutdown to protect against short circuits and excessive junction temperatures.
