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SM5133DS from NPC

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SM5133DS

Manufacturer: NPC

FREQUENCY SYNTHESIZER PLL ICs

Partnumber Manufacturer Quantity Availability
SM5133DS NPC 50049 In Stock

Description and Introduction

FREQUENCY SYNTHESIZER PLL ICs The part **SM5133DS** is a **DC-DC Step-Down Converter IC** with the following specifications, descriptions, and features:

### **Manufacturer:**  
- **Silicon Mitus**  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 18V  
- **Output Voltage Range:** 0.8V to 15V (adjustable)  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 340kHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOP-8 (Exposed Pad)  

### **Descriptions:**  
- The **SM5133DS** is a synchronous step-down DC-DC converter with an integrated high-side and low-side MOSFET.  
- It provides high efficiency and stable output voltage for various applications.  
- Features include **soft-start**, **over-current protection (OCP)**, **thermal shutdown (TSD)**, and **under-voltage lockout (UVLO)**.  

### **Features:**  
- **Wide Input Voltage Range (4.5V–18V)**  
- **Adjustable Output Voltage (0.8V–15V)**  
- **High Efficiency (up to 95%)**  
- **Integrated MOSFETs (High-Side & Low-Side)**  
- **Fixed 340kHz Switching Frequency**  
- **Protection Features (OCP, TSD, UVLO)**  
- **Compact SOP-8 Package with Exposed Pad for Heat Dissipation**  

This IC is commonly used in **power supplies, industrial equipment, automotive electronics, and consumer electronics**.  

(Note: Always refer to the official datasheet for precise details.)

Application Scenarios & Design Considerations

FREQUENCY SYNTHESIZER PLL ICs

Alternative Part Number

  • S-1133B33-M5T1U --: Low-dropout linear regulator in SOT-23-5 with similar 3.3V fixed output and low quiescent current, a common cross for NPC SM-series LDOs.
  • XC6206P332MR --: Widely available 3.3V LDO in SOT-23 with comparable dropout and current rating, often used as a drop-in replacement for small NPC regulators.
  • AP2112K-3.3TRG1 --: 600mA 3.3V LDO in SOT-23-5 with low dropout and stable ceramic-cap operation, suitable functional substitute when pinout is verified.
  • AO3400A --: N-channel MOSFET in SOT-23, widely used as a general-purpose replacement for small-signal switching applications similar to the SM5133DS.
  • 2N7002 --: Very common SOT-23 N-channel MOSFET with similar small-signal switching characteristics, easy to source and cost-effective.
  • BSS138 --: Logic-level N-channel MOSFET in SOT-23 package, suitable for low-voltage switching and level-shifting circuits as an alternative.

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