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MAX1651CSA from MAXIM,MAXIM - Dallas Semiconductor

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MAX1651CSA

Manufacturer: MAXIM, MAX

5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers

Partnumber Manufacturer Quantity Availability
MAX1651CSA MAXIM, MAX 55130 In Stock

Description and Introduction

5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers The MAX1651CSA is a high-efficiency, step-down DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 4V to 30V  
- **Output Voltage Range:** Adjustable from 1.25V to 16V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 300kHz  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  

### **Descriptions:**  
The MAX1651CSA is a synchronous-rectified, step-down (buck) DC-DC converter designed for high-efficiency power conversion. It integrates a power MOSFET and synchronous rectifier, reducing the need for external components. It is suitable for applications requiring a compact and efficient power supply solution.  

### **Features:**  
- **High Efficiency:** Up to 90% due to synchronous rectification.  
- **Wide Input Voltage Range:** Supports 4V to 30V input.  
- **Adjustable Output Voltage:** Configurable from 1.25V to 16V via external resistors.  
- **Low Dropout Operation:** Maintains regulation even when input voltage is close to output voltage.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Overcurrent Protection:** Safeguards against excessive load conditions.  
- **Thermal Shutdown:** Protects the device from overheating.  
- **Compact Design:** Requires minimal external components.  

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

Application Scenarios & Design Considerations

5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers

Alternative Part Number

  • LTC3406ES5 --: High-efficiency step-down DC-DC converter in a small SOT-23 package, functionally similar to the MAX1651 buck regulator and widely available.
  • TPS5420D --: 5.5V to 36V input, 2A step-down converter in SOIC-8, a common drop-in class replacement for MAX1651 buck applications.
  • MC34063ACD --: Versatile general-purpose DC-DC switching regulator in SOIC-8 that can be configured as a step-down converter, low cost and broadly stocked.

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