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MAX1902EAI from MAXIM,MAXIM - Dallas Semiconductor

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MAX1902EAI

Manufacturer: MAXIM, MAX, MAXI

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

Partnumber Manufacturer Quantity Availability
MAX1902EAI MAXIM, MAX, MAXI 15339 In Stock

Description and Introduction

500kHz Multi-Output / Low-Noise Power-Supply Controllers for Notebook Computers The MAX1902EAI is a power management IC manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (MAXI)  
- **Part Number:** MAX1902EAI  
- **Package:** 28-pin SSOP (Shrink Small Outline Package)  
- **Input Voltage Range:** 4.5V to 30V  
- **Output Voltage Range:** Adjustable (via external resistors)  
- **Switching Frequency:** 300kHz (fixed)  
- **Output Current:** Up to 10A (with external MOSFETs)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Description:**  
The MAX1902EAI is a high-efficiency, synchronous step-down DC-DC controller designed for high-current applications. It provides precise voltage regulation and supports adjustable output voltages through external feedback resistors. The IC operates with external N-channel MOSFETs to deliver high power conversion efficiency.  

### **Features:**  
- **Wide Input Voltage Range:** 4.5V to 30V  
- **High Output Current Capability:** Up to 10A (with proper external components)  
- **Synchronous Rectification:** Improves efficiency by reducing power loss  
- **Adjustable Output Voltage:** Set via external resistors  
- **Fixed-Frequency PWM Operation:** 300kHz for stable performance  
- **Overcurrent Protection:** Prevents damage during fault conditions  
- **Thermal Shutdown:** Protects against overheating  
- **Soft-Start Function:** Reduces inrush current during startup  
- **Low Dropout Operation:** Maintains regulation even at low input-output differentials  

This information is based solely 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

  • TPS51116PWP --: DDR memory power supply controller with similar dual-output regulation function, widely available and well documented.
  • ISL6537CRZ --: Integrated DDR power controller offering comparable VDDQ/VTT regulation, suitable as a functional substitute.
  • LTC3717EUH --: Synchronous buck controller usable in similar notebook DDR supply designs, though pinout and external components differ.
  • RT9173BGS --: DDR bus termination regulator offering similar VTT tracking and current capability, suitable as a lower-cost alternative in memory power designs.

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