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MC34166D2T from MOT,Motorola

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MC34166D2T

Manufacturer: MOT, ON

POWER SWITCHING REGULATORS
Partnumber Manufacturer Quantity Availability
MC34166D2T MOT, ON 8030 In Stock

Description and Introduction

POWER SWITCHING REGULATORS The MC34166D2T is a switching regulator IC manufactured by ON Semiconductor.  

### **Specifications:**  
- **Input Voltage Range:** 10V to 30V  
- **Output Voltage:** Adjustable (depends on external components)  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 100kHz (fixed)  
- **Efficiency:** High (typically >85%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** D2PAK (TO-263)  

### **Descriptions:**  
The MC34166D2T is a monolithic, high-performance switching regulator designed for step-down (buck) applications. It integrates a PWM controller, power switch, and protection features, making it suitable for DC-DC conversion in various power supply designs.  

### **Features:**  
- **Integrated Power Switch:** Reduces external component count.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.  
- **Thermal Shutdown:** Protects the IC from overheating.  
- **Current Limiting:** Safeguards against excessive output current.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Adjustable Output Voltage:** Configured via external resistors.  

This IC is commonly used in industrial, automotive, and consumer electronics applications requiring efficient power conversion.

Application Scenarios & Design Considerations

POWER SWITCHING REGULATORS

Alternative Part Number

  • LM2576-12 --: Widely available step-down switching regulator with similar voltage/current ratings and pin-compatible layout, making it a strong drop-in alternative.
  • LT1076 --: Robust buck regulator IC with comparable input voltage range and output current, suitable for similar power supply designs.
  • MC34063A --: Versatile DC-DC converter IC from a different series that can be configured for step-down operation, offering a cost-effective fallback option.
  • LM2596S-ADJ --: Adjustable buck regulator with comparable input range and current capability, well documented and easy to substitute in power supply designs.
  • XL4015E1 --: Low-cost 5A step-down converter with similar function and pin-compatible style, suitable as a functional alternative for non-critical designs.

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