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MAX1901EAI

Manufacturer: MAXIM, MAX

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

Partnumber Manufacturer Quantity Availability
MAX1901EAI MAXIM, MAX 5282 In Stock

Description and Introduction

500kHz Multi-Output / Low-Noise Power-Supply Controllers for Notebook Computers The MAX1901EAI is a power-supply controller 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 (Analog Devices)  
- **Part Number:** MAX1901EAI  
- **Package:** 28-pin SSOP (Shrink Small Outline Package)  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V  
- **Output Current:** Up to 20A (with external MOSFETs)  
- **Switching Frequency:** 300kHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The MAX1901EAI is a high-efficiency, synchronous step-down DC-DC controller designed for high-current applications. It operates with external N-channel MOSFETs to provide a regulated output voltage from an input supply ranging from 4.5V to 28V. The controller features a fixed-frequency PWM (Pulse-Width Modulation) architecture and includes protections such as overcurrent and thermal shutdown.

### **Features:**
- **Adjustable Output Voltage:** Set via external resistors.  
- **Synchronous Rectification:** Improves efficiency by reducing power loss.  
- **Programmable Soft-Start:** Limits inrush current during startup.  
- **Overcurrent Protection (OCP):** Prevents damage from excessive load currents.  
- **Thermal Shutdown:** Protects the IC from overheating.  
- **Power-Good (PG) Output:** Monitors output voltage status.  
- **External Compensation:** Allows optimization for different output capacitors.  
- **Low-Dropout Operation:** Maintains regulation even when input voltage is close to output voltage.  

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

  • LTC1628CG-PG --: Dual synchronous step-down controller with similar function and package, widely used as a MAX1901 cross-reference.
  • TPS51120PW --: Dual-channel synchronous buck controller offering comparable features and a common alternative in notebook power designs.
  • ISL6237IRZ --: Dual-output step-down controller with similar electrical characteristics and pin-compatible footprint options.
  • TPS51020DBT --: Dual synchronous buck controller with similar dual-output architecture and voltage range, widely available and often used as a MAX1901 substitute in notebook power designs.
  • LTC3728LEUH --: Dual high-efficiency synchronous buck controller with similar feature set and electrical ratings, suitable as a functional replacement with layout review.
  • TPS51120RHBR --: Dual synchronous buck controller designed for notebook power systems, offering comparable dual-output regulation and a different series naming for easy distinction.

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