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Product Detailed Parameters
- Description：IC REG LIN 5V 250MA 4-FLIPCHIP
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.2V @ 250mA
- Current - Output：250mA
- Current - Quiescent (Iq)：25 µA
- Current - Supply (Max)：425 µA
- PSRR：80dB ~ 60dB (100Hz ~ 100KHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Short Circuit, Soft Start
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：4-XFBGA, FCBGA
- Supplier Device Package：4-FlipChip (0.63x0.63)
- Grade：-
- Qualification：-
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Overview
The LDLN025J50R is a fixed-output low-dropout linear regulator from STMicroelectronics, providing a stable 5 V output with a maximum load current of 250 mA. It operates within an input voltage range of 1.5 V to 5.5 V and features ultra-low noise performance of 6.5 µVRMS alongside high power supply rejection ratios of 80 dB at 100 Hz and 60 dB at 100 kHz. The device maintains a typical dropout voltage of 120 mV at full load and draws only 12 µA in no-load quiescent mode. Packaged in a compact FlipChip-4 format, it supports operation across a temperature range of -40 °C to +125 °C.
Feature Summary
- Ultra-low output noise and high PSRR for sensitive analog loads
- Logic-controlled electronic shutdown with minimal standby consumption
- Internal protections including thermal regulation and short-circuit limiting
Applications
- Voltage control for voltage-controlled oscillators (VCOs) in mobile devices
- Powering precision analog-to-digital converters (ADCs)
- Noise-sensitive circuits in wireless IoT sensors
Procurement Notes
Verify the specific suffix J50R against official datasheets to confirm the 5 V fixed output and FlipChip-4 packaging. Ensure compatibility with PCB layout requirements for flip-chip mounting. Confirm that the selected component matches the required operating temperature range and electrical specifications for the target application environment.
Selection Notes
Select this regulator when designing space-constrained battery-powered systems requiring clean power for RF or analog sections. The FlipChip-4 package offers significant footprint reduction compared to traditional SOT-23 options. Consider the 12 µA quiescent current for applications demanding extended standby times and the internal soft-start feature for controlled power sequencing.
Part Context
This component belongs to the LDLN025 series, a family of 250 mA ultra-low noise LDO regulators designed by STMicroelectronics. The series provides various fixed output voltages and multiple small form-factor packages, including DFN and SOT-23 variants, to accommodate different design constraints while maintaining consistent low-noise performance characteristics.
Replacement Considerations
Other members of the LDLN025 series with identical 250 mA current ratings may serve as functional substitutes if pin-compatible packages are available. Verify that alternative part numbers match the required 5 V output and FlipChip-4 footprint before integration.
