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SI9181DQ-50-T1 from SILICONIX

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SI9181DQ-50-T1

Manufacturer: SILICONIX

Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset
Partnumber Manufacturer Quantity Availability
SI9181DQ-50-T1,SI9181DQ50T1 SILICONIX 3000 In Stock

Description and Introduction

Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset **Manufacturer:** SILICONIX (now part of Vishay Intertechnology)  

**Part Number:** SI9181DQ-50-T1  

### **Specifications:**  
- **Type:** Power MOSFET  
- **Technology:** N-Channel  
- **Voltage Rating (VDS):** 50V  
- **Current Rating (ID):** 4.5A (continuous)  
- **On-Resistance (RDS(on)):** 0.15Ω (typical)  
- **Gate Threshold Voltage (VGS(th)):** 1V to 2.5V  
- **Power Dissipation (PD):** 2.5W  
- **Package:** D-PAK (TO-252)  
- **Operating Temperature Range:** -55°C to +150°C  

### **Descriptions:**  
- Designed for high-efficiency power switching applications.  
- Low gate charge for fast switching performance.  
- Suitable for DC-DC converters, motor control, and power management.  

### **Features:**  
- Low on-resistance for reduced conduction losses.  
- Enhanced thermal performance due to D-PAK package.  
- Avalanche energy rated for ruggedness.  
- Lead-free and RoHS compliant.  

(Note: Always verify datasheet details for exact specifications.)

Application Scenarios & Design Considerations

Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset

Alternative Part Number

  • LP2985AIM5-5.0 --: 5.0V low-dropout linear regulator in SOT-23-5 with similar current capability and pinout, widely available and a common drop-in substitute for the SI9181 series.
  • MIC5205-5.0YM5 --: 5.0V LDO regulator in SOT-23-5 offering comparable dropout and output current, suitable replacement when the original Siliconix part is unavailable.
  • AP2112K-5.0TRG1 --: 5.0V CMOS LDO in SOT-23-5 with low quiescent current and stable output, a cost-effective alternative for the SI9181DQ-50-T1 in most applications.

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