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Product Detailed Parameters
- Description：IC REG LINEAR 3V 300MA 4-DFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.23V @ 300mA
- Current - Output：300mA
- Current - Quiescent (Iq)：40 µA
- Current - Supply (Max)：305 µA
- PSRR：75dB ~ 55dB (1kHz ~ 100kHz)
- Control Features：Enable
- Protection Features：Over Temperature. Short Circuit
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：4-XDFN Exposed Pad
- Supplier Device Package：4-DFN (1x1)
- Grade：-
- Qualification：-
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Overview
The LD59030DTPU30R is a fixed-output linear low-dropout regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 3V with a maximum continuous output current of 300mA. The device operates from an input voltage range of 1.5V to 5.5V and features a typical dropout voltage of 135mV at full load. Quiescent current is specified at 28µA, reducing to less than 0.03µA in shutdown mode. It includes internal soft-start, current fold-back protection, and thermal shutdown. The component is housed in a compact 4-DFN (1x1mm) package with exposed pad for surface mount installation.
Feature Summary
- Ultra-low dropout voltage performance ensures efficient power delivery under varying load conditions
- Logic-controlled enable pin allows precise management of power consumption via electronic shutdown
- Integrated protection mechanisms include thermal shutdown and output current fold-back circuitry
- Compatible with small ceramic output capacitors, facilitating minimal footprint design
Applications
- Low power battery-operated portable electronics
- Space-constrained embedded systems requiring high accuracy voltage regulation
- Noise-sensitive analog circuits benefiting from high PSRR performance
Procurement Notes
Verify the specific suffix 'DTPU30R' matches the required 3V fixed output variant. Confirm the 4-DFN package dimensions align with PCB layout constraints. Ensure compatibility with RoHS3 standards if environmental compliance is mandatory. Check datasheet for moisture sensitivity level handling requirements during assembly.
Selection Notes
Select this component when a fixed 3V rail is required with minimal quiescent current draw. The 300mA output capability suits moderate load applications. Verify that the input voltage remains within the 1.5V to 5.5V operational window. Consider the DFN4 package size for tight space limitations compared to larger packages.
Part Context
This part belongs to the LD59030 series of ultra-low dropout linear regulators. The series is characterized by high accuracy and low noise, designed for battery-powered devices. The DTPU30R designation specifically indicates the 3V output version within the broader family of adjustable or fixed voltage options available in the same package.
Replacement Considerations
Direct substitutes may include other LD59030 variants with different output voltages if the voltage requirement changes. Cross-reference with LD39030 series for similar form factors but verify current ratings and quiescent current differences.
