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SG3543DW from LINFINITY

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SG3543DW

Manufacturer: LINFINITY

POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT

Partnumber Manufacturer Quantity Availability
SG3543DW LINFINITY 72 In Stock

Description and Introduction

POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT **Part Number:** SG3543DW  
**Manufacturer:** LINFINITY  

### **Specifications:**  
- **Type:** Voltage Regulator IC  
- **Output Voltage:** Adjustable or Fixed (specific value depends on variant)  
- **Output Current:** Up to 3A (typical)  
- **Input Voltage Range:** 4.5V to 40V  
- **Dropout Voltage:** Low dropout (exact value varies)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-252 (DPAK) or similar surface-mount package  
- **Protection Features:** Overcurrent, thermal shutdown, and reverse polarity protection  

### **Descriptions:**  
- The SG3543DW is a high-performance voltage regulator designed for power supply applications.  
- It provides stable output voltage with high efficiency and low noise.  
- Suitable for automotive, industrial, and consumer electronics.  

### **Features:**  
- Adjustable or fixed output voltage options  
- High current capability (up to 3A)  
- Wide input voltage range  
- Built-in protection mechanisms (thermal, overcurrent)  
- Compact surface-mount package for space-constrained designs  

For exact technical details, refer to the official LINFINITY datasheet.

Application Scenarios & Design Considerations

POWER SUPPLY OUTPUT SUPERVISORY CIRCUIT

Alternative Part Number

  • UC3843BD1 --: Industry-standard current-mode PWM controller in SOIC-8, functionally equivalent to the SG3543 with similar UVLO thresholds and drive capability.
  • TL3843P --: Widely available current-mode PWM controller with comparable oscillator and output stage, suitable drop-in replacement in most SG3543 applications.
  • SG3843M --: Same SG384x family architecture from a different vendor line, offering matching current-mode control behavior and SOIC package compatibility.

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