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VIPER12A.. from ST,ST Microelectronics

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VIPER12A..

Manufacturer: ST

LOW POWER OFF LINE SMPS PRIMARY SWITCHER

Partnumber Manufacturer Quantity Availability
VIPER12A..,VIPER12A ST 247 In Stock

Description and Introduction

LOW POWER OFF LINE SMPS PRIMARY SWITCHER The VIPER12A is a low-power offline SMPS primary switcher produced by STMicroelectronics.  

### **Manufacturer:** STMicroelectronics  

### **Specifications:**  
- **Input Voltage Range:** 9V to 38V (DC)  
- **Output Power:** Up to 8W (depending on configuration)  
- **Switching Frequency:** Fixed 60 kHz  
- **Operating Temperature Range:** -40°C to +150°C  
- **Package:** SO-8  
- **Integrated Features:**  
  - High-voltage startup circuit  
  - PWM controller with current-mode control  
  - Built-in overvoltage protection (OVP)  
  - Thermal shutdown protection  
  - Undervoltage lockout (UVLO)  

### **Descriptions:**  
The VIPER12A is a monolithic IC designed for offline flyback converters. It integrates a high-voltage power MOSFET with a PWM controller, reducing external component count. It is commonly used in low-power AC/DC adapters, auxiliary power supplies, and home appliances.  

### **Features:**  
- **High-Voltage Startup:** Eliminates the need for an external startup resistor.  
- **Current-Mode Control:** Ensures stable operation and fast transient response.  
- **Low Standby Power Consumption:** Suitable for energy-efficient applications.  
- **Protections:** Includes OVP, thermal shutdown, and cycle-by-cycle current limiting.  
- **Compact Design:** SO-8 package allows space-saving PCB layouts.  

For detailed electrical characteristics and application circuits, refer to the official STMicroelectronics datasheet.

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