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MAX6390XS31D4+T from MAXIM,MAXIM - Dallas Semiconductor

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MAX6390XS31D4+T

Manufacturer: MAXIM

SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits

Partnumber Manufacturer Quantity Availability
MAX6390XS31D4+T,MAX6390XS31D4T MAXIM 20000 In Stock

Description and Introduction

SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits The **MAX6390XS31D4+T** is a high-efficiency, step-down DC-DC converter manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information:  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX6390XS31D4+T  
- **Type:** Step-Down (Buck) DC-DC Converter  
- **Input Voltage Range:** 2.5V to 11V  
- **Output Voltage:** 3.1V (Fixed)  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 1MHz (Typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 4-Pin SOT-143  
- **Features:**  
  - **Low Dropout Operation** (100% duty cycle)  
  - **Internal Compensation** (No external compensation required)  
  - **Overcurrent and Thermal Protection**  
  - **Low Quiescent Current** (20µA in shutdown mode)  
  - **Synchronous Rectification** for improved efficiency  

### **Descriptions:**  
The **MAX6390XS31D4+T** is a compact, high-efficiency step-down DC-DC converter designed for battery-powered and portable applications. It integrates a synchronous rectifier to minimize power loss and operates at a fixed 1MHz switching frequency, allowing for small external components.  

### **Features:**  
- **Fixed 3.1V Output** (Precision voltage reference)  
- **Wide Input Range (2.5V–11V)** for battery-powered systems  
- **High Efficiency (Up to 95%)** due to synchronous rectification  
- **Low Quiescent Current (20µA in shutdown)** for power-sensitive applications  
- **Internal Soft-Start** to reduce inrush current  
- **Thermal and Overcurrent Protection** for reliability  
- **Compact SOT-143 Package** for space-constrained designs  

This device is commonly used in **portable electronics, battery-powered systems, and embedded applications** where efficiency and small footprint are critical.  

(Note: Always refer to the official datasheet for complete and updated specifications.)

Application Scenarios & Design Considerations

SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits

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