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Product Detailed Parameters
- Description：IC REG LINEAR 3V 1A 8-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)：3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.165V @ 1A
- Current - Output：1A
- Current - Quiescent (Iq)：155 µA
- Current - Supply (Max)：-
- PSRR：70dB ~ 55dB (1kHz ~ 100kHz)
- Control Features：Enable, Soft Start
- 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 LD56100DPU30R is a high-accuracy linear voltage regulator from STMicroelectronics, providing a fixed 3.0 V output with a maximum current of 1 A. 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 thermal/current protection, housed in a compact DFN8 package.
Feature Summary
- Ultra-low noise performance suitable for sensitive analog circuits
- Logic-controlled electronic shutdown for minimal standby consumption
- Internal soft-start circuit limits inrush current during activation
- Integrated short-circuit and thermal protection mechanisms
Applications
- Mobile phones
- Tablets
- Battery-powered systems
- Camera supply
Procurement Notes
Verify the specific ordering code against official STMicroelectronics documentation to confirm the fixed 3.0 V output voltage and the inclusion of the auto-discharge feature. Ensure compatibility with the required DFN8 footprint and check for any updated environmental compliance grades or revision changes before finalizing procurement.
Selection Notes
Select this component when a low-noise, high-current LDO is required for battery-operated portable devices. The wide input voltage range and ultra-low dropout voltage make it suitable for single-cell lithium-ion applications. Consider the optional output discharge feature if rapid power-down is necessary for system safety or efficiency.
Part Context
This part belongs to the LD56100 series, designed as a very low dropout fast transient ultra-low noise linear regulator. It is optimized for space-constrained designs using the DFN8 package. The series supports various fixed output voltages and offers configurable current limit settings via the LCON pin.
Replacement Considerations
LD56100DPU30RDT: Identical electrical specifications but without the integrated output discharge MOSFET feature.
FAQ
How does the LCON pin affect the output current?
Connecting the LCON pin to VIN sets the output current limit to 1 A, while connecting it to GND reduces the limit to 0.5 A.
What is the purpose of the EN pin?
The EN pin provides logic control for the device; a low signal activates shutdown mode, while a high signal enables normal operation.
