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Product Detailed Parameters
- Description：IC REG LINEAR 2.8V 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)：2.8V
- 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 LDLN015PU28R is a low-dropout linear voltage regulator from STMicroelectronics, providing a fixed 2.8 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, typically 6.3 µV RMS between 10 Hz and 100 kHz. The device includes logic-controlled shutdown, short-circuit protection, and thermal limiting. It is housed in a compact DFN-6 (2x2 mm) package and supports ceramic capacitors for stability.
Feature Summary
- Ultra-low noise operation suitable for sensitive analog loads
- Logic-controlled electronic shutdown for extended battery life
- Internal current and thermal protection mechanisms
Applications
- Powering precision ADCs in mobile devices
- Supplying VCOs in personal digital assistants
- Noise-sensitive circuits in portable electronics
Procurement Notes
Verify the specific suffix PU28R confirms the 2.8 V fixed output voltage. Confirm the DFN-6 package dimensions match design constraints. Check RoHS compliance status and ensure the component lifecycle status aligns with long-term production requirements before finalizing procurement.
Selection Notes
Select this regulator when ultra-low noise is critical for signal integrity in space-constrained designs. Ensure the input voltage remains within the 2.1 V to 5.5 V range. Verify that the load current does not exceed 150 mA and that the PCB layout accommodates the required ceramic output capacitor for stability.
Part Context
This component belongs to the LDLN015 series of high-performance LDO regulators designed for ultra-sensitive applications. The series offers various fixed output voltages with a common 150 mA capability and ultra-low noise profile, targeting portable consumer electronics and precision instrumentation where power efficiency and signal purity are paramount.
Replacement Considerations
Consult official substitution lists for equivalent LDOs with matching 150 mA output and low-noise specifications. Verify pin compatibility and thermal characteristics if replacing with components from other manufacturers or different ST product lines.
