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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 150MA 6-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)：0.18V @ 150mA
- Current - Output：150mA
- Current - Quiescent (Iq)：60 µA
- Current - Supply (Max)：120 µA
- PSRR：92dB ~ 50dB (1kHz ~ 100kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：6-UFDFN Exposed Pad
- Supplier Device Package：6-DFN (2x2)
- Grade：-
- Qualification：-
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Overview
The LDLN015PU25R is a low-dropout linear voltage regulator from STMicroelectronics, providing a fixed 2.5 V output with a maximum current of 150 mA. It operates within an input voltage range of 2.1 V to 5.5 V and features ultra-low noise performance, specified at 6.3 µV RMS between 10 Hz and 100 kHz. The device includes logic-controlled shutdown functionality, reducing quiescent current to below 1 µA in off mode. It utilizes a DFN-6 (2 x 2 mm) surface-mount package and supports operation across a temperature range of -40 °C to +125 °C.
Feature Summary
- Ultra-low noise operation suitable for sensitive analog loads
- Logic-controlled electronic shutdown for extended battery life
- High power supply rejection ratio for stable output under varying conditions
Applications
- Powering analog-to-digital converters (ADCs)
- Supplying voltage-controlled oscillators (VCOs)
- Noise-sensitive circuits in mobile phones and personal digital assistants
Procurement Notes
Verify the specific suffix PU25R against official datasheets to confirm the 2.5 V fixed output voltage and DFN-6 packaging. Confirm availability status as the LDLN015 series may have end-of-life designations. Ensure compatibility with ceramic output capacitors as specified in the technical documentation.
Selection Notes
Select this component when designing for ultra-sensitive RF or analog applications requiring minimal output noise. It is appropriate for space-constrained portable devices where low dropout voltage and high PSRR are critical. Verify that the required output voltage matches the fixed 2.5 V specification.
Part Context
This part belongs to the LDLN015 family of ultra-low noise linear regulators designed for noise-sensitive loads. The series offers various fixed output voltages and shares common features such as low quiescent current and compact packaging. It complements other LDO families like LDLN025 by focusing on ultra-low noise performance rather than higher current capabilities.
Replacement Considerations
Check for direct substitutes within the LDLN015 series offering different fixed output voltages if system requirements change. Verify pin-out compatibility before replacing with other STMicroelectronics LDOs.
