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MAX1954AEUB from MAXIM,MAXIM - Dallas Semiconductor

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MAX1954AEUB

Manufacturer: MAXIM

3.0 V to 13.2 V, low-cost, current-mode PWM buck controller with foldback current limit

Partnumber Manufacturer Quantity Availability
MAX1954AEUB MAXIM 45 In Stock

Description and Introduction

3.0 V to 13.2 V, 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 (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** Adjustable from 0.8V to 5.5V  
- **Output Current:** Up to 4A  
- **Switching Frequency:** 300kHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin µMAX (Ultra-small form factor)  

### **Descriptions:**  
The MAX1954AEUB is a synchronous buck (step-down) DC-DC converter designed for high-efficiency power conversion in applications such as telecom, networking, and industrial systems. It integrates high-side and low-side MOSFETs to minimize external component count while delivering high output current with low ripple.  

### **Features:**  
- **Integrated Power MOSFETs:** Reduces external component requirements.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **PWM/PFM Mode Operation:** Enhances efficiency at light loads.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Overcurrent and Thermal Protection:** Safeguards the device under fault conditions.  
- **Low Dropout Operation:** Maintains regulation even when input voltage is close to output.  

This information is sourced from the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

3.0 V to 13.2 V, low-cost, current-mode PWM buck controller with foldback current limit
Partnumber Manufacturer Quantity Availability
MAX1954AEUB MAXIM 2465 In Stock

Description and Introduction

3.0 V to 13.2 V, low-cost, current-mode PWM buck controller with foldback current limit The MAX1954AEUB is a step-down DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **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%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin µMAX (MicroMAX)  

### **Descriptions:**
The MAX1954AEUB is a high-efficiency, step-down DC-DC converter designed for portable applications. It integrates a synchronous rectifier for improved efficiency and operates at a fixed 1MHz switching frequency, allowing the use of small external components. The device features a low-dropout mode for extended battery life and includes soft-start and overcurrent protection.

### **Features:**
- **High Efficiency:** Up to 95% efficiency with synchronous rectification.  
- **Low Quiescent Current:** 30µA (typical) in shutdown mode.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **PWM/PFM Mode Operation:** Automatically switches for optimal efficiency.  
- **Internal Soft-Start:** Reduces inrush current.  
- **Overcurrent and Thermal Protection:** Ensures safe operation.  
- **Small Footprint:** 10-pin µMAX package saves board space.  

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

Application Scenarios & Design Considerations

3.0 V to 13.2 V, low-cost, current-mode PWM buck controller with foldback current limit

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