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TL594DTB from ON,ON Semiconductor

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TL594DTB

Manufacturer: ON, MOT

Precision Switchmode Pulse Width Modulation Control Circuit

Partnumber Manufacturer Quantity Availability
TL594DTB ON, MOT 3471 In Stock

Description and Introduction

Precision Switchmode Pulse Width Modulation Control Circuit The TL594DTB is a pulse-width modulation (PWM) control circuit manufactured by Motorola (MOT).  

### **Specifications:**  
- **Function:** PWM Control IC  
- **Topology:** Push-Pull or Single-Ended Output  
- **Operating Voltage Range:** 7V to 40V  
- **Output Current:** 200mA (sink/source per output)  
- **Frequency Range:** Adjustable up to 300kHz  
- **Duty Cycle Range:** Adjustable from 0% to 100%  
- **Error Amplifier:** Built-in for feedback control  
- **Package Type:** SOIC-16  

### **Descriptions and Features:**  
- **PWM Control:** Provides precise pulse-width modulation for power supply regulation.  
- **Adjustable Dead-Time Control:** Allows setting of dead time between outputs.  
- **On-Chip Error Amplifier:** Enhances feedback loop stability.  
- **Internal Oscillator:** Frequency can be set using external RC components.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within voltage range.  
- **Dual Outputs:** Supports push-pull or single-ended configurations.  

This IC is commonly used in switch-mode power supplies (SMPS), DC-DC converters, and motor control applications.

Application Scenarios & Design Considerations

Precision Switchmode Pulse Width Modulation Control Circuit

Alternative Part Number

  • SG3525AN --: Industry-standard PWM controller with similar voltage-mode architecture and totem-pole outputs, widely used as a direct functional substitute for TL594 in switching power supplies.
  • UC3846N --: Current-mode PWM controller offering comparable control-loop functionality and dual output drive, suitable for replacing TL594 in power conversion designs.
  • MC34063AP --: Versatile DC-DC switching regulator controller from the same manufacturer, usable as a functional alternative for TL594 in many low-to-medium power supply applications.
  • UC3842AN --: Popular current-mode PWM controller often used in similar power supply designs; requires minor circuit adjustment but is a common replacement.

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