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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 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)：2.5V
- 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, Soft Start
- Protection Features：Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：4-XDFN Exposed Pad
- Supplier Device Package：4-DFN (1x1)
- Grade：-
- Qualification：-
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Overview
The LD59030DTPU25R is a fixed-output low dropout linear regulator from STMicroelectronics, providing a stable 2.5 V output with a maximum current of 300 mA. It operates within an input voltage range of 1.5 V to 5.5 V and features a typical dropout voltage of 135 mV at full load. The device incorporates a very low quiescent current of 28 µA and includes internal protection mechanisms such as thermal shutdown and current fold-back. Designed for space-constrained applications, it utilizes a compact DFN4 1x1 package and supports ceramic capacitors.
Feature Summary
- Ultra-low dropout voltage capability ensures efficient power regulation under minimal input-to-output differentials.
- Logic-controlled enable function allows deep shutdown mode with negligible current consumption.
- Internal soft-start circuit limits inrush current during power-up sequences.
- Compatible with small-value ceramic output capacitors for reduced board footprint.
Applications
- Low power battery-operated portable devices
- Space-constrained embedded systems requiring compact PMIC solutions
- Noise-sensitive analog circuits requiring high PSRR
Procurement Notes
Verify the specific suffix 'DTPU25R' to confirm the 2.5 V fixed output voltage variant. Ensure compatibility with the DFN4 1x1 package dimensions for PCB layout. Confirm RoHS compliance status if required by project specifications. Cross-reference datasheet revision dates to ensure accurate electrical parameter values.
Selection Notes
Select this component when a fixed 2.5 V rail is required with moderate current demands up to 300 mA. Consider the ultra-low quiescent current for battery life optimization. Evaluate the thermal performance in the DFN4 package based on expected ambient temperatures and load conditions. Verify that the input voltage remains within the 1.5 V to 5.5 V operational window.
Part Context
This part belongs to the LD59030 series of high-accuracy voltage regulators designed for low-power applications. The series offers various fixed output voltages while maintaining consistent performance characteristics such as low dropout and high power supply rejection ratio across the family.
Replacement Considerations
LD59030DTPU18R (1.8 V output), LD59030DTPU30R (3.0 V output). These share identical pinouts and packages but differ in fixed output voltage. Verify voltage requirements before substitution.
