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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1.5A DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：14V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：180 µA
- Current - Supply (Max)：80 mA
- PSRR：67dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：-
- Qualification：-
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Overview
The LD29150DT33 is a fixed-output low-dropout (LDO) voltage regulator manufactured by STMicroelectronics. It provides a stable 3.3 V output with a maximum continuous current of 1.5 A. The device operates within an input voltage range of 3 V to 13 V and features a typical dropout voltage of 400 mV at full load. It includes internal protection mechanisms such as thermal shutdown and current limiting. The component is housed in a TO-252-3 surface-mount package and supports operation temperatures from -40 °C to +125 °C.
Feature Summary
- Guarantees high output current capability up to 1.5 A for demanding loads
- Features very low dropout voltage to maintain regulation under minimal headroom
- Includes internal thermal limit and current limit for robust protection
Applications
- Power supply switching post-regulation
- Series power supplies for monitors, VCRs, and TVs
- Computer systems requiring stable logic voltages
- Battery-powered systems where low dropout is critical
Procurement Notes
Verify the specific suffix 'DT33' confirms the 3.3 V fixed output variant. Confirm the TO-252-3 package matches your PCB footprint requirements. Ensure the manufacturer is STMicroelectronics to guarantee original quality and parameter accuracy. Check RoHS compliance status if required for your manufacturing standards.
Selection Notes
Select this component when a fixed 3.3 V rail is needed with high current capacity. The TO-252-3 package offers better thermal performance than smaller SOT packages. Consider the 13 V maximum input voltage limit during system design. This regulator is suitable for applications requiring tight line and load regulation without external feedback components.
Part Context
This part belongs to the LD29150 series of high-current LDO regulators. The series offers both fixed and adjustable output options. The DT suffix indicates the surface-mount TO-252-3 package type. Other variants in the family provide different fixed voltages or adjustable configurations using external resistors.
Replacement Considerations
Compatible substitutes include other parts from the LD29150 family with matching voltage and package, such as LD29150DT15 for 1.5 V output. Cross-reference with equivalent 1.5 A LDOs in TO-252-3 packages from other manufacturers, ensuring pinout compatibility.
