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TL494CDR2 from ON,ON Semiconductor

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TL494CDR2

Manufacturer: ON, TI

SWITCHMODE TM Pulse Width Modulation Control Circuit

Partnumber Manufacturer Quantity Availability
TL494CDR2 ON, TI 10564 In Stock

Description and Introduction

SWITCHMODE TM Pulse Width Modulation Control Circuit The TL494CDR2 is a pulse-width-modulation (PWM) control circuit manufactured by ON Semiconductor.  

### **Specifications:**  
- **Type:** PWM Controller  
- **Topology:** Buck, Boost, Flyback, Forward, Push-Pull, Half-Bridge, Full-Bridge  
- **Output Type:** Dual Inverting/Non-Inverting  
- **Frequency Range:** Up to 300 kHz  
- **Duty Cycle Max:** 45% (Push-Pull Mode)  
- **Supply Voltage (VCC):** 7V to 40V  
- **Output Current:** 200mA (sink/source per output)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-16  

### **Descriptions:**  
The TL494CDR2 is a fixed-frequency PWM controller with adjustable dead-time control, error amplifiers, and an on-chip oscillator. It is widely used in power supply applications, including DC-DC converters and inverters.  

### **Features:**  
- Adjustable dead-time control  
- Internal oscillator with sync capability  
- Dual error amplifiers  
- Uncommitted output transistors (200mA sink/source)  
- Under-voltage lockout (UVLO)  
- Internal reference voltage (5V ±1%)  
- Available in Pb-free and RoHS-compliant packaging  

This information is based on the manufacturer's datasheet. For detailed application notes, refer to ON Semiconductor's official documentation.

Application Scenarios & Design Considerations

SWITCHMODE TM Pulse Width Modulation Control Circuit

Alternative Part Number

  • KA7500CD --: Pin-compatible PWM controller with the same functions and widely used as a direct substitute for the TL494 in SMPS designs.
  • SG3524N --: Classic PWM regulator IC with similar control architecture; usable in many TL494 applications with minor circuit adjustments.
  • UC3843AN --: Current-mode PWM controller often used as an alternative in power supply designs, though pinout and control method differ slightly.
  • UC3842AN --: Current-mode PWM controller commonly used as a substitute in switching power supply designs, though circuit adjustments may be needed.
  • KA7500B --: Direct functional equivalent of the TL494 PWM controller family, often used as a drop-in replacement in power supply circuits.

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