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SI91871DMP-33-T1 from VISHAY

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SI91871DMP-33-T1

Manufacturer: VISHAY

300-mA Ultra Low-Noise LDO Regulator With Discharge Option
Partnumber Manufacturer Quantity Availability
SI91871DMP-33-T1,SI91871DMP33T1 VISHAY 21339 In Stock

Description and Introduction

300-mA Ultra Low-Noise LDO Regulator With Discharge Option The part **SI91871DMP-33-T1** is a **DC-DC converter module** from **Silicon Labs (now part of Skyworks Solutions)**.  

### **Manufacturer Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** 3.3V (fixed)  
- **Output Current:** Up to 1A  
- **Efficiency:** Up to 96%  
- **Switching Frequency:** 3MHz  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin DFN (3mm x 3mm)  

### **Descriptions:**  
- A high-efficiency, step-down (buck) DC-DC converter.  
- Designed for low-power, space-constrained applications.  
- Features integrated power switches and compensation.  

### **Features:**  
- **Ultra-compact size** (small footprint).  
- **Low quiescent current** for improved battery life.  
- **High efficiency** across load conditions.  
- **Integrated soft-start** to reduce inrush current.  
- **Overcurrent and thermal protection** for reliability.  
- **Adjustable output voltage** (for other variants).  

This module is commonly used in **portable electronics, IoT devices, and embedded systems**.  

Would you like additional details on any specific aspect?

Application Scenarios & Design Considerations

300-mA Ultra Low-Noise LDO Regulator With Discharge Option

Alternative Part Number

  • LP2985AIM5-3.3 --: Low-dropout 3.3V linear regulator in SOT-23-5 with similar current capability and pin-compatible function.
  • MIC5205-3.3YM5 --: 3.3V LDO regulator in SOT-23-5 offering comparable dropout and output current, suitable drop-in replacement.
  • AP2112K-3.3TRG1 --: 3.3V fixed LDO in SOT-23-5 with low quiescent current, a common alternative for similar regulator applications.
  • TPS7A4901DGNR --: Low-noise 3.3V LDO regulator in a similar small package with comparable current capability, suitable as a functional replacement.
  • LP5907MFX-3.3 --: 3.3V fixed-output low-dropout regulator with low quiescent current, commonly used as a drop-in alternative for small LDO applications.
  • MIC5219-3.3YM5 --: 3.3V LDO regulator in a compact SOT-23-5 package offering similar voltage regulation and load current for this application.

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