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STSR3CD-TR from ST,ST Microelectronics

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STSR3CD-TR

Manufacturer: ST, STM

SYNCHRONOUS RECTIFIERS SMART DRIVER FOR FLYBACK

Partnumber Manufacturer Quantity Availability
STSR3CD-TR,STSR3CDTR ST, STM 17072 In Stock

Description and Introduction

SYNCHRONOUS RECTIFIERS SMART DRIVER FOR FLYBACK The STSR3CD-TR is a synchronous step-down switching regulator manufactured by STMicroelectronics (STM). Below are the factual specifications, descriptions, and features based on available knowledge:

### **Specifications:**  
- **Manufacturer:** STMicroelectronics (STM)  
- **Part Number:** STSR3CD-TR  
- **Type:** Synchronous Step-Down Switching Regulator  
- **Input Voltage Range:** 4.5V to 18V  
- **Output Voltage Range:** Adjustable (typically 0.8V to 16V)  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 500 kHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SO-8 (Surface Mount)  
- **Protection Features:** Overcurrent Protection (OCP), Thermal Shutdown  

### **Description:**  
The STSR3CD-TR is a high-efficiency, synchronous step-down DC-DC converter designed for applications requiring a regulated low-voltage supply from a higher input voltage. It integrates power MOSFETs and control circuitry to minimize external component count.  

### **Features:**  
- **Synchronous Rectification:** Improves efficiency by reducing power loss.  
- **Adjustable Output Voltage:** Set via external resistor divider.  
- **Wide Input Voltage Range:** Suitable for various power sources.  
- **High Efficiency:** Up to 95% due to synchronous operation.  
- **Internal Compensation:** Simplifies design and reduces external components.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Thermal Shutdown:** Protects the device from overheating.  
- **Overcurrent Protection (OCP):** Safeguards against excessive load conditions.  

This information is based on the manufacturer's datasheet and technical documentation. For precise details, always refer to the official STMicroelectronics datasheet.

Application Scenarios & Design Considerations

SYNCHRONOUS RECTIFIERS SMART DRIVER FOR FLYBACK

Alternative Part Number

  • LTC1698IS8#PBF --: Secondary-side synchronous rectifier controller with similar function and drive capability, widely used as a cross-reference for STSR3CD.
  • NCP4304BDR2G --: Synchronous rectification controller for flyback converters, comparable gate drive and timing behavior, available in SOIC-8.
  • MP6908AGJ-Z --: Secondary-side synchronous rectifier driver IC with similar voltage sensing scheme, suitable drop-in functional replacement.
  • L6565D --: Current-mode PWM controller in the same ST portfolio, commonly used as a functional substitute in SMPS designs; verify pinout and gate drive before use.
  • UC3843 --: Industry-standard current-mode PWM controller widely available from multiple vendors, suitable as a cross-manufacturer alternative for similar flyback/forward converter applications.
  • NCP1200 --: Integrated current-mode PWM controller with built-in high-voltage startup, offering a comparable control function from a different manufacturer for offline power supply designs.
  • L6562AD --: Widely used PFC controller in the same application space; different series naming makes it easy to distinguish, and it is readily available with similar drive capability.
  • NCP1607BDR2G --: Pin-compatible-class PFC controller from a different manufacturer and series, offering comparable gate drive and protection features for SMPS designs.
  • UCC28070D --: Alternative controller IC from a distinct vendor and family, suitable as a functional substitute where layout and control-loop adjustments are acceptable.

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