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TL497AC from TI,Texas Instruments

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TL497AC

Manufacturer: TI

SWITCHING VOLTAGE REGULATORS

Partnumber Manufacturer Quantity Availability
TL497AC TI 1355 In Stock

Description and Introduction

SWITCHING VOLTAGE REGULATORS The TL497AC is a switching regulator manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Manufacturer:** Texas Instruments (TI)  
### **Part Number:** TL497AC  

### **Description:**  
The TL497AC is a switching regulator IC designed for step-up, step-down, and inverting voltage regulation applications. It operates in a fixed-frequency mode and includes an onboard power switch, oscillator, and control circuitry.  

### **Key Features:**  
- **Input Voltage Range:** 4.5V to 12V  
- **Output Voltage Range:** Adjustable (depends on external components)  
- **Switching Frequency:** 20 kHz (typical)  
- **Output Current:** Up to 500 mA (depending on configuration)  
- **On-Chip Power Switch:** NPN Darlington transistor with 1.5A peak current capability  
- **Operating Modes:** Step-up (boost), step-down (buck), and inverting configurations  
- **Duty Cycle Control:** Adjustable for optimized efficiency  
- **Thermal Protection:** Built-in thermal shutdown  
- **Package Type:** 8-pin DIP (Dual In-line Package)  

### **Applications:**  
- DC-DC voltage conversion  
- Battery-powered systems  
- Portable instruments  
- Power supplies  

This information is based on TI's official documentation for the TL497AC. For detailed circuit configurations and application notes, refer to the datasheet.

Application Scenarios & Design Considerations

SWITCHING VOLTAGE REGULATORS

Alternative Part Number

  • MC34063AP --: Industry-standard switching regulator IC with similar voltage-mode control function; widely available and often used as a drop-in substitute for TL497-type designs.
  • LM2575T-ADJ --: Simple switcher buck regulator from the same manufacturer, offering integrated switch and easy design migration for TL497 applications.
  • MC33063AP --: Versatile DC-DC converter IC with comparable input range and switching capability, commonly cross-referenced for TL497 replacements.
  • MC34063A --: Widely used general-purpose DC-DC switching regulator IC that can serve as a functional substitute in many TL497A boost/inverting converter applications.
  • LM2575 --: Simple switcher buck regulator with integrated switch, suitable replacement when the TL497A is used in step-down conversion designs.
  • LT1073 --: Micropower DC-DC converter IC offering boost and inverting topologies, a practical alternative for TL497A-based low-power supply circuits.

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