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STMicroelectronics Voltage Regulator 5.5V Ultra-low Noise DFN 6-Pin LD56100DPU33R
Specifications
| Country of Origin | China |
|---|---|
| Brand | STMicroelectronics |
| Height | 450μm |
| Operating Temperature Range | -40 °C to 125 °C |
| Length | 1.6mm |
| Model | LD56100DPU33R |
| Width | 1.2mm |
| Mount Type | Surface |
| Series | LD56100 |
| Maximum Operating Temperature | 125°C |
| Package Type | DFN |
| Polarity | Positive |
| Maximum Input Voltage | 5.5V |
| Quiescent Current | 155μA |
| Minimum Input Voltage | 1.8V |
| Pin Count | 6 |
| Wide range of output voltages available on request | from 1.0 V up to 5.0 V in 50 mV step |
Key Features
- Input voltage range from 1.8 V to 5.5 V ensuring broad compatibility.
- Ultra-low dropout voltage of 120 mV typical at 1 A load with 3.3 V output.
- Extremely low quiescent current at 155 μA typical and 0.03 μA in off mode.
- Output voltage tolerance maintained within ±1% from -40 °C to +85 °C.
- Low noise performance with 13 μV RMS noise from 10 Hz to 100 kHz at 3.0 V output.
- High power supply rejection ratio (PSRR) of 70 dB at 1 kHz.
- Logic-controlled electronic shutdown and internal soft-start features.
- Thermal and current limit protections for reliable operation.
Product Description
STMicroelectronics LD56100DPU33R is a high-performance voltage regulator designed for efficient power management in electronic applications. Featuring an ultra-low dropout voltage of 120 mV typical at 1 A load and offering output voltages from 1.0 V to 5.0 V in 50 mV steps, it delivers precise voltage regulation with ±1% tolerance across a wide temperature range.
This device operates over an input voltage range of 1.8 V to 5.5 V and includes advanced features such as logic-controlled electronic shutdown, an internal soft-start mechanism, and optional output voltage discharge for enhanced control and reliability.
The LD56100DPU33R exhibits very low quiescent current - only 155 μA typical during operation and as low as 0.03 μA in shutdown mode - making it ideal for battery-powered and low-power systems. Its ultra-low noise performance of 13 μV RMS noise from 10 Hz to 100 kHz ensures clean output voltages suitable for sensitive analog circuits.
Protection features include internal current limit foldback and thermal shutdown, ensuring robustness in industrial, commercial, and automotive electronics environments. The compact DFN 6-pin package (1.6 mm x 1.2 mm x 0.45 mm) supports surface mounting in space-constrained applications.
Wide input voltage from 1.8 V to 5.5 V allows versatile use in power systems. Low dropout voltage ideal for power-sensitive circuits. Extremely low quiescent current conserves battery life in portable devices. High PSRR of 70 dB reduces output noise from supply fluctuations.
Temperature range from -40 °C to 125 °C supports industrial applications. Logic-controlled shutdown enables power-saving modes. Soft-start prevents inrush current damage during power-up. Internal protections enhance device and system reliability.
Compact DFN package facilitates miniaturization.
This voltage regulator suits applications in industrial controls, telecommunications, automotive electronics, portable and battery-powered devices, and other precision electronic circuits requiring stable power supply and noise-sensitive performance.
Explore the full range of STMicroelectronics power management ICs and Voltage Regulators on EnvMart for reliable electronic component sourcing.
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Frequently Asked Questions
The input voltage range is from 1.8 V to 5.5 V, ensuring broad compatibility with various power systems.
The typical dropout voltage is 120 mV at a 1 A load with a 3.3 V output.
The typical quiescent current is 155 μA during operation and as low as 0.03 μA in shutdown mode.
It maintains an output voltage tolerance within ±1% from -40 °C to +85 °C.
The DFN package dimensions are 1.6 mm in length, 1.2 mm in width, and 450 μm in height.
It exhibits an ultra-low noise performance with 13 μV RMS noise from 10 Hz to 100 kHz at a 3.0 V output.
The maximum operating temperature is 125 °C, suitable for industrial applications.
It includes thermal shutdown and current limit protections for reliable operation.
The power supply rejection ratio (PSRR) is 70 dB at 1 kHz, which helps reduce output noise from supply fluctuations.
This voltage regulator is suitable for applications in industrial controls, telecommunications, automotive electronics, and battery-powered devices.
The LD56100DPU33R has a pin count of 6, facilitating its integration into various electronic circuits.
Yes, it features logic-controlled electronic shutdown, allowing for power-saving modes.
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