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MAX8743ETX from MAXIM,MAXIM - Dallas Semiconductor

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MAX8743ETX

Manufacturer: MAXIM

Dual, High-Efficiency, Step-Down Controller with High Impedance in Shutdown

Partnumber Manufacturer Quantity Availability
MAX8743ETX MAXIM 200 In Stock

Description and Introduction

Dual, High-Efficiency, Step-Down Controller with High Impedance in Shutdown The MAX8743ETX is a voltage regulator IC manufactured by Maxim Integrated. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX8743ETX  
- **Package:** 36-Pin TQFN (Thin Quad Flat No-Lead)  
- **Input Voltage Range:** 4.5V to 24V  
- **Output Voltage Range:** Adjustable (0.7V to 5.5V)  
- **Output Current:** Up to 7A  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The MAX8743ETX is a high-efficiency, synchronous step-down DC-DC converter designed for applications requiring high output current. It integrates power MOSFETs and supports adjustable output voltage with high accuracy. The device is optimized for low EMI and high efficiency, making it suitable for power supplies in computing, networking, and industrial applications.

### **Features:**
- **Integrated Power MOSFETs** – Reduces external component count.  
- **Adjustable Output Voltage** – Supports a wide range of applications.  
- **High Efficiency** – Up to 95% efficiency with synchronous rectification.  
- **Adjustable Switching Frequency** – Allows optimization for noise or efficiency.  
- **Soft-Start Function** – Prevents inrush current at startup.  
- **Overcurrent and Overtemperature Protection** – Enhances system reliability.  
- **Low-Dropout Operation** – Maintains regulation even with low input-to-output differential.  
- **Power-Good Output** – Provides system monitoring capability.  

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

Application Scenarios & Design Considerations

Dual, High-Efficiency, Step-Down Controller with High Impedance in Shutdown
Partnumber Manufacturer Quantity Availability
MAX8743ETX MAX 28 In Stock

Description and Introduction

Dual, High-Efficiency, Step-Down Controller with High Impedance in Shutdown The MAX8743ETX is a step-down controller manufactured by Maxim Integrated (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 24V  
- **Output Voltage Range:** Adjustable down to 0.8V  
- **Switching Frequency:** 300kHz (fixed)  
- **Maximum Output Current:** Up to 15A (with external MOSFETs)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 36-pin TQFN (6mm x 6mm)  

### **Descriptions:**  
The MAX8743ETX is a synchronous buck controller designed for high-efficiency DC-DC conversion. It supports high-current applications with adaptive non-overlapping gate drivers for external N-channel MOSFETs. The device includes features like soft-start, overcurrent protection, and thermal shutdown.  

### **Features:**  
- **Synchronous Rectification:** Improves efficiency by reducing power loss.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **PWM Operation:** Fixed 300kHz switching frequency.  
- **Soft-Start:** Limits inrush current during startup.  
- **Overcurrent Protection (OCP):** Prevents damage from excessive load.  
- **Thermal Shutdown:** Protects against overheating.  
- **Low Dropout Operation:** Extends battery life in portable applications.  

This controller is commonly used in notebooks, telecom, and industrial power supplies.  

Would you like additional details on any specific feature?

Application Scenarios & Design Considerations

Dual, High-Efficiency, Step-Down Controller with High Impedance in Shutdown

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