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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 1A 8-DFN
- 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)：2.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.19V @ 1A
- Current - Output：1A
- Current - Quiescent (Iq)：155 µA
- Current - Supply (Max)：-
- PSRR：70dB ~ 55dB (1kHz ~ 100kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-XFDFN Exposed Pad
- Supplier Device Package：8-DFN (1.6x1.2)
- Grade：-
- Qualification：-
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Overview
The LD56100DPU25R is a high-accuracy linear voltage regulator from STMicroelectronics, providing a fixed 2.5 V output with up to 1 A load current capability. It operates within an input voltage range of 1.8 V to 5.5 V and features a typical dropout voltage of 120 mV at full load. The device incorporates ultra-low noise characteristics (13 µV RMS) and high power supply rejection ratio (70 dB at 1 kHz). It includes logic-controlled shutdown, internal soft-start, and optional output discharge functions. Packaged in a compact DFN8 (1.2 x 1.6 mm) footprint, it supports operation across a temperature range of -40 °C to 125 °C.
Feature Summary
- Ultra-low dropout performance enabling efficient regulation even at minimal input-output voltage differentials
- Integrated electronic shutdown and auto-discharge functionality for minimizing standby power consumption
- High precision output voltage stability with tight tolerance specifications across wide operating temperatures
- Built-in protection mechanisms including thermal shutdown and short-circuit current foldback
Applications
- Mobile phones
- Tablets
- Battery-powered systems
- Camera supply
Procurement Notes
Verify the specific order code LD56100DPU25R against official STMicroelectronics documentation to confirm the fixed 2.5 V output voltage and the inclusion of the auto-discharge feature. Ensure compatibility with the required DFN8 package dimensions and check for any updated revision history or environmental compliance grades before finalizing procurement.
Selection Notes
Select this component when designing low-power battery-operated systems requiring fast transient response and minimal noise. The device is suitable for applications needing a fixed 2.5 V rail with high accuracy. Consider the LCON pin configuration if lower current limits are required for specific load conditions. Verify that the external ceramic capacitors meet the stability requirements specified in the datasheet.
Part Context
This part belongs to the LD56100 series of very low dropout linear regulators designed for space-constrained portable electronics. The series offers various fixed output voltages ranging from 1.0 V to 5.0 V in 50 mV steps. All variants share the same DFN8 package and core electrical characteristics, differing primarily in their nominal output voltage settings and specific marking codes.
Replacement Considerations
Other members of the LD56100 family with different output voltages may serve as functional replacements if the voltage requirement changes. Verify pinout compatibility and ensure that the alternative part number retains the desired auto-discharge feature and package type.
