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MAX1844ETP+T from MAXIM,MAXIM - Dallas Semiconductor

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MAX1844ETP+T

Manufacturer: MAXIM

High-Speed Step-Down Controller with Accurate Current Limit for Notebook Computers

Partnumber Manufacturer Quantity Availability
MAX1844ETP+T,MAX1844ETPT MAXIM 50000 In Stock

Description and Introduction

High-Speed Step-Down Controller with Accurate Current Limit for Notebook Computers The MAX1844ETP+T is a 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:**  
- **Input Voltage Range:** 2.6V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.8V to VIN  
- **Output Current:** Up to 600mA  
- **Switching Frequency:** 1MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Quiescent Current:** 40µA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 20-pin TQFN (5mm x 5mm)  

### **Descriptions:**  
The MAX1844ETP+T is a high-efficiency, step-down DC-DC converter designed for portable and battery-powered applications. It integrates synchronous rectification to minimize external components and improve efficiency. The device operates at a fixed 1MHz switching frequency, allowing the use of small inductors and capacitors.  

### **Features:**  
- **Synchronous Rectification:** Improves efficiency and reduces power dissipation.  
- **Low Dropout Operation:** Maintains regulation even when the input voltage approaches the output voltage.  
- **Pulse-Width Modulation (PWM) Mode:** Ensures stable operation under heavy loads.  
- **Power-On Reset (POR) and Soft-Start:** Prevents inrush current at startup.  
- **Undervoltage Lockout (UVLO):** Protects the device when input voltage is too low.  
- **Thermal Shutdown:** Safeguards against overheating.  

This information is strictly based on the manufacturer's datasheet. For detailed application notes or design considerations, refer to Maxim Integrated's official documentation.

Application Scenarios & Design Considerations

High-Speed Step-Down Controller with Accurate Current Limit for Notebook Computers

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