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MAX1904BEAI+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX1904BEAI+

Manufacturer: MAXIM, MAX

500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

Partnumber Manufacturer Quantity Availability
MAX1904BEAI+,MAX1904BEAI MAXIM, MAX 530 In Stock

Description and Introduction

500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers The MAX1904BEAI+ 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 data:  

### **Manufacturer:**  
- **MAXIM INTEGRATED (now Analog Devices)**  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V  
- **Output Current:** Up to 4A  
- **Switching Frequency:** 300kHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 28-pin SSOP (Shrink Small Outline Package)  

### **Descriptions:**  
- The MAX1904BEAI+ is a high-efficiency, step-down (buck) DC-DC converter designed for applications requiring high current output.  
- It integrates a synchronous rectifier for improved efficiency and reduced external component count.  
- Suitable for powering microprocessors, DSPs, and other high-performance digital ICs.  

### **Features:**  
- **Synchronous Rectification:** Improves efficiency and reduces power loss.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Overcurrent and Thermal Protection:** Enhances reliability.  
- **Low Dropout Operation:** Maintains regulation even when input voltage is close to output.  
- **PWM/PFM Mode Switching:** Optimizes efficiency at light loads.  

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

Application Scenarios & Design Considerations

500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

Alternative Part Number

  • LTC3728LEGN --: Dual synchronous step-down controller with similar function and pin-compatible feature set, widely used as a MAX1904 substitute in notebook power designs.
  • ISL6237IRZ --: Dual-channel synchronous buck controller for notebook CPU/GPU rails, functionally equivalent to MAX1904 with comparable voltage accuracy and current-limit features.
  • TPS51120RHBR --: Dual synchronous buck controller designed for notebook power supplies, offering similar dual-output regulation and protection features as the MAX1904.
  • LTC3728LEUH --: Dual synchronous step-down controller with similar function and pinout concept, widely used as a MAX1904 substitute in notebook power designs.

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