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MC34063AN from ST,ST Microelectronics

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MC34063AN

Manufacturer: ST

DC-DC Converter Control Circuits

Partnumber Manufacturer Quantity Availability
MC34063AN ST 50 In Stock

Description and Introduction

DC-DC Converter Control Circuits The MC34063AN is a monolithic control circuit manufactured by STMicroelectronics (ST) that contains the primary functions required for DC-DC converters.  

### **Specifications:**  
- **Input Voltage Range:** 3V to 40V  
- **Output Current:** Up to 1.5A (switch current)  
- **Oscillator Frequency:** Up to 100kHz  
- **Duty Cycle Adjustable:** Up to 100%  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** PDIP-8 (Plastic Dual In-line Package)  

### **Descriptions:**  
The MC34063AN is a versatile DC-DC converter IC that can be configured for step-up (boost), step-down (buck), and voltage-inverting applications. It includes an internal temperature-compensated reference, comparator, controlled duty-cycle oscillator, driver, and high-current output switch.  

### **Features:**  
- **Wide Input Voltage Range:** 3V to 40V  
- **Low Standby Current**  
- **Short-Circuit Current Limiting**  
- **Adjustable Output Voltage**  
- **Efficiency Up to 90%** (depending on configuration)  
- **Internal Reference Voltage:** 1.25V  

This IC is commonly used in power supply designs for consumer electronics, automotive systems, and industrial applications.

Application Scenarios & Design Considerations

DC-DC Converter Control Circuits

Alternative Part Number

  • LM2576T-ADJ --: Widely available adjustable step-down switching regulator with integrated switch, similar function to MC34063 but higher current capability and simpler external circuit.
  • MC33063AP1 --: Pin-compatible industry-standard equivalent of the MC34063 boost/buck/inverting regulator from a different manufacturer and series prefix.
  • XL6009E1 --: Low-cost adjustable boost/buck switching regulator IC with comparable input range and current rating, suitable as a functional replacement.

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