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TL1451AQD from TI,Texas Instruments

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TL1451AQD

Manufacturer: TI

Dual Channel Controller with Wide Input Voltage Range

Partnumber Manufacturer Quantity Availability
TL1451AQD TI 28 In Stock

Description and Introduction

Dual Channel Controller with Wide Input Voltage Range The TL1451AQD is a pulse-width modulation (PWM) controller manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** TL1451AQD  
- **Type:** PWM Controller  
- **Package:** SOIC-16  
- **Operating Temperature Range:** -40°C to +85°C  
- **Supply Voltage (VCC):** 3.6V to 40V  
- **Output Current (Sink/Source):** 200mA (per channel)  
- **Switching Frequency:** Adjustable up to 500kHz  
- **Number of Channels:** 2 (Dual)  
- **Duty Cycle Range:** 0% to 100%  

### **Descriptions:**  
The TL1451AQD is a dual PWM controller designed for power supply control applications. It features two independent error amplifiers, an adjustable oscillator, dead-time control, and output drivers. It is commonly used in DC-DC converters, switching regulators, and other power management systems.  

### **Features:**  
- Dual PWM control circuits  
- Adjustable dead-time control  
- Internal undervoltage lockout (UVLO)  
- Wide operating voltage range (3.6V to 40V)  
- High output drive current (200mA per channel)  
- Adjustable oscillator frequency  
- Error amplifiers with reference voltage  
- Short-circuit protection  
- Low standby current  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Dual Channel Controller with Wide Input Voltage Range

Alternative Part Number

  • SG3525AD --: Industry-standard PWM controller with similar dual-output regulation function; widely available and well documented as a TL1451 replacement in switching power supply designs.
  • UC3846N --: Current-mode PWM controller offering comparable control-loop functionality; commonly used as an alternative in power supply applications where the TL1451 is specified.
  • MC34063AD --: Versatile DC-DC switching regulator controller that can implement similar regulation functions in many TL1451-based designs; low cost and broadly stocked.

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