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TDA4601 from ST,ST Microelectronics

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TDA4601

Manufacturer: ST, SIEMENS, PHILIPS

PWM Control IC for Switched Mode Powe...

Partnumber Manufacturer Quantity Availability
TDA4601 ST, SIEMENS, PHILIPS 954 In Stock

Description and Introduction

PWM Control IC for Switched Mode Powe... The TDA4601 is an integrated circuit (IC) manufactured by **Siemens** (now Infineon Technologies). It is designed for use in **switched-mode power supplies (SMPS)** as a **control circuit** for regulating power converters.  

### **Specifications:**  
- **Supply Voltage (Vcc):** 8V to 16V (operating range)  
- **Start-up Current:** Typically 0.5 mA  
- **Standby Current:** Typically 1.5 mA  
- **Output Current (Driver):** Up to 1.2A (peak)  
- **Switching Frequency:** Adjustable via external components  
- **Protection Features:** Overvoltage protection, undervoltage lockout (UVLO), overload protection  
- **Operating Temperature Range:** -25°C to +125°C  
- **Package Type:** DIP-8 (Dual In-line Package)  

### **Descriptions:**  
The TDA4601 is a **PWM (Pulse Width Modulation) controller** optimized for **flyback and forward converter** topologies. It includes internal logic for soft-start, duty cycle control, and protection functions.  

### **Features:**  
- **Soft-start function** to reduce inrush current  
- **Primary regulation** for improved efficiency  
- **Error amplifier** for feedback control  
- **Current limiting** for overload protection  
- **Undervoltage lockout (UVLO)** to prevent malfunction at low voltages  
- **High driver output current** for driving power MOSFETs or bipolar transistors  

The TDA4601 is commonly used in **TV power supplies, adapters, and industrial SMPS applications**.  

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

Application Scenarios & Design Considerations

PWM Control IC for Switched Mode Powe...

Alternative Part Number

  • UC3842 --: Widely used current-mode PWM controller for offline SMPS; functionally similar control role and easy to source as a replacement in many power supply designs.
  • SG6841 --: Green-mode PWM controller for flyback power supplies; comparable control function and commonly used as a substitute in SMPS applications.
  • NCP1200 --: Integrated PWM current-mode controller for low-power offline converters; similar application area and a practical alternative when the original is unavailable.
  • SG3524 --: Classic PWM switching regulator controller with similar oscillator and drive functions, usable as a replacement in many power supply designs.
  • MC34063 --: Versatile DC-DC switching controller that can replace the TDA4601 in low-power supply circuits with minor component changes.
  • KA3842 --: Industry-standard 3842-series PWM controller, pin-compatible with UC3842 and broadly available; a practical replacement for TDA4601-based power supplies after appropriate circuit adaptation.

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