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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 3A P2PAK-4
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 @ 3A
- Current - Output：3A
- Current - Quiescent (Iq)：50 mA
- Current - Supply (Max)：100 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-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Supplier Device Package：P2PAK-4
- Grade：-
- Qualification：-
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Overview
The LD29300P2M33R is a fixed-output low-dropout voltage regulator from STMicroelectronics, providing a nominal 3.3 V output with ±1% tolerance at 25 °C. It supports up to 3 A of guaranteed output current and features a typical dropout voltage of 0.4 V at full load. The device operates within an input voltage range of 2.5 V to 30 V and includes internal thermal and current limiting protections. Designed for surface-mount applications, it utilizes the P2PAK package.
Feature Summary
- Fixed 3.3 V output with high accuracy
- Very low dropout voltage performance
- Internal current and thermal protection
Applications
- Power supply switching post regulation
- Series power supply for monitors
- Computer systems
- Battery-powered systems
Procurement Notes
Verify the specific suffix '33R' confirms the 3.3 V fixed output variant and reel packaging format. Ensure the P2PAK package type matches the target PCB footprint requirements. Confirm that the component meets the required operating temperature range and electrical specifications for the intended application environment before finalizing procurement.
Selection Notes
Select this component when a stable 3.3 V rail is required for loads up to 3 A. The very low dropout characteristic makes it suitable for battery-powered designs where input voltage may approach the output level. Verify that the system's maximum input voltage does not exceed 30 V and that adequate thermal management is provided for the P2PAK package under expected load conditions.
Part Context
This part belongs to the LD29300 series of 3 A very low drop voltage regulators. The series offers various fixed output voltages including 1.5 V, 1.8 V, 2.5 V, 5.0 V, and 8.0 V, as well as an adjustable version. All variants share similar core features such as low ground current and internal protection mechanisms.
Replacement Considerations
Compatible substitutes include other parts from the LD29300 family with different fixed output voltages (e.g., LD29300P2M50R for 5.0 V) or the adjustable LD29300P2MTR if external resistors are used. Ensure any replacement maintains the same P2PAK package and pin configuration.
