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MAX1954AEUB+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX1954AEUB+

Manufacturer: MAXIM

Low-Cost, Current-Mode PWM Buck Controller with Foldback Current Limit

Partnumber Manufacturer Quantity Availability
MAX1954AEUB+,MAX1954AEUB MAXIM 22960 In Stock

Description and Introduction

Low-Cost, Current-Mode PWM Buck Controller with Foldback Current Limit The **MAX1954AEUB+** is a high-efficiency, step-down DC-DC converter manufactured by **Maxim Integrated**. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 2.6V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.8V to VIN  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 1MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Package:** 10-pin µMAX (3mm x 3mm)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The MAX1954AEUB+ is a synchronous step-down DC-DC converter optimized for high efficiency and compact design.  
- It integrates both high-side and low-side MOSFETs, reducing external component count.  
- Features pulse-width modulation (PWM) operation for stable output under varying loads.  

### **Features:**  
- **Internal Synchronous Rectification** – Improves efficiency by eliminating the need for an external Schottky diode.  
- **Low Dropout Operation** – Allows the output to remain in regulation even when the input voltage approaches the output voltage.  
- **Soft-Start** – Reduces inrush current during startup.  
- **Overcurrent and Thermal Protection** – Safeguards the device under fault conditions.  
- **Power-On Reset (POR) Monitoring** – Ensures proper startup sequencing.  

This converter is commonly used in portable devices, battery-powered applications, and point-of-load regulation.

Application Scenarios & Design Considerations

Low-Cost, Current-Mode PWM Buck Controller with Foldback Current Limit

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