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MAX797ESE-T from MAXIM,MAXIM - Dallas Semiconductor

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MAX797ESE-T

Manufacturer: MAXIM, MAX

Step-Down Controllers with Synchronous Rectifier for CPU Power

Partnumber Manufacturer Quantity Availability
MAX797ESE-T,MAX797ESET MAXIM, MAX 22566 In Stock

Description and Introduction

Step-Down Controllers with Synchronous Rectifier for CPU Power The MAX797ESE-T is a step-down controller manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Category:** DC-DC Switching Controllers  
- **Output Type:** Adjustable  
- **Topology:** Buck (Step-Down)  
- **Input Voltage Range:** 4.5V to 30V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V  
- **Output Current:** Up to 20A (with external MOSFETs)  
- **Switching Frequency:** 200kHz to 300kHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-SOIC (150mil)  

### **Descriptions:**  
The MAX797ESE-T is a high-efficiency, step-down DC-DC controller designed for high-current applications. It provides precise output voltage regulation and supports adjustable switching frequencies. The device is suitable for powering microprocessors, ASICs, and other high-performance digital circuits.  

### **Features:**  
- **Wide Input Voltage Range:** Supports 4.5V to 30V input.  
- **High Output Current:** Capable of driving up to 20A with external MOSFETs.  
- **Adjustable Output Voltage:** Configurable from 1.25V to 5.5V.  
- **Programmable Switching Frequency:** Allows optimization for efficiency or component size.  
- **Synchronous Rectification:** Improves efficiency by reducing power loss.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Overcurrent and Thermal Protection:** Enhances system reliability.  
- **Low Dropout Operation:** Maintains regulation even when input voltage is close to output.  

This information is based solely 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 controller in SO-8 package with similar boost/inverting capability and wide input range, a common cross for MAX797 designs.
  • MC34063ACD --: Versatile DC-DC converter controller in SO-8 that can implement boost, buck, and inverting topologies, widely available and cost-effective substitute.
  • LM2577S-ADJ --: Adjustable step-up switching regulator in SO-8 with comparable current capability and simple external component count, suitable for similar power supply circuits.
  • LM3478MM --: Widely available boost/flyback controller with similar wide-input PWM control function; different series and pinout, so verify the circuit before substitution.
  • MC34063A --: Classic general-purpose DC-DC switching regulator controller covering boost, buck, and inverting topologies; a common low-cost functional substitute with a different naming series.
  • LT1940 --: Dual-channel step-up switching regulator from a different series offering comparable supply-voltage range and current capability; check pinout and compensation differences.

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