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SI4544DY from Siliconix

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SI4544DY

Manufacturer: Siliconix, VISHAY, SIL

Complementary MOSFET Half-Bridge (N-/P-Channel)
Partnumber Manufacturer Quantity Availability
SI4544DY Siliconix, VISHAY, SIL 28635 In Stock

Description and Introduction

Complementary MOSFET Half-Bridge (N-/P-Channel) **Manufacturer:** Vishay Siliconix  

**Part Number:** SI4544DY  

**Description:**  
The SI4544DY is a dual N-channel and P-channel MOSFET in a PowerPAK® SO-8 package. It is designed for high-efficiency power management applications, including DC-DC converters, load switches, and battery management systems.  

**Key Features:**  
- **Dual MOSFET Configuration:** Combines one N-channel and one P-channel MOSFET in a single package.  
- **Low On-Resistance (RDS(on)):**  
  - N-channel: 0.028Ω (max) at VGS = 4.5V  
  - P-channel: 0.045Ω (max) at VGS = -4.5V  
- **Low Gate Charge:** Optimized for fast switching performance.  
- **Voltage Ratings:**  
  - Drain-to-Source Voltage (VDS): ±20V  
  - Gate-to-Source Voltage (VGS): ±12V  
- **High Current Handling:**  
  - Continuous Drain Current (ID): 5.8A (N-channel), -4.5A (P-channel)  
- **PowerPAK® SO-8 Package:** Compact footprint with improved thermal performance.  
- **Applications:**  
  - Synchronous buck converters  
  - Power switches  
  - Motor control  
  - Battery protection circuits  

**Note:** Specifications may vary based on operating conditions. Always refer to the datasheet for detailed electrical characteristics.

Application Scenarios & Design Considerations

Complementary MOSFET Half-Bridge (N-/P-Channel)

Alternative Part Number

  • FDS4935A --: Dual P-channel MOSFET in SO-8 with comparable voltage and current ratings, suitable drop-in replacement for load-switch and power-management circuits.
  • NTMS4503N --: Dual P-channel MOSFET in SO-8 with similar RDS(on) and voltage rating, widely available and electrically compatible.
  • IRF7324 --: Dual P-channel MOSFET in SO-8 package with matching pinout and comparable ratings, a common alternative for Siliconix dual P-channel parts.
  • NTMD4820NR2 --: Dual N/P-channel MOSFET in SO-8 with comparable ratings, usable as an alternative with layout verification.
  • NTMS4935NR2 --: Dual P-channel MOSFET in SO-8 with matching package and electrical characteristics, suitable as a functional replacement.

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