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MAX797ESE from MAXIM,MAXIM - Dallas Semiconductor

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MAX797ESE

Manufacturer: MAXIM, MAX

Step-Down Controllers with Synchronous Rectifier for CPU Power

Partnumber Manufacturer Quantity Availability
MAX797ESE MAXIM, MAX 14720 In Stock

Description and Introduction

Step-Down Controllers with Synchronous Rectifier for CPU Power The MAX797ESE is a high-efficiency, step-down DC-DC converter manufactured by Maxim Integrated. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 30V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V  
- **Output Current:** Up to 7A  
- **Switching Frequency:** 300kHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin SOIC (ESE)  

### **Descriptions:**  
The MAX797ESE is a synchronous buck (step-down) DC-DC converter designed for high-efficiency power conversion in applications requiring high current output. It integrates both high-side and low-side MOSFETs, reducing external component count. The device operates at a fixed 300kHz switching frequency and 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.  
- **Integrated Power MOSFETs:** Simplifies design and reduces board space.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Overcurrent and Thermal Protection:** Enhances system reliability.  
- **Wide Input Voltage Range:** Suitable for various power sources.  

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

Application Scenarios & Design Considerations

Step-Down Controllers with Synchronous Rectifier for CPU Power

Alternative Part Number

  • LT1072CS8 --: High-efficiency switching regulator in SO-8 package with comparable input voltage range and current capability, suitable as a functional substitute.
  • MC34063ACD --: Widely available general-purpose DC-DC switching regulator in SO-8, pin-compatible with many step-up/step-down designs and a common drop-in alternative.
  • LM2575S-ADJ --: Adjustable step-down switching regulator in a similar package with integrated switch, offering a robust alternative for power supply designs.
  • LTC1871EMS --: Wide input range current-mode boost/flyback controller in the same 16-pin MSOP/SSOP class, functionally similar to the MAX797 step-up controller and widely available.
  • LM3478MM --: Low-side N-channel boost/flyback controller with comparable input voltage range and current-mode control, suitable as a functional substitute in many MAX797 designs.

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