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MAX8546EUB from MAXIM,MAXIM - Dallas Semiconductor

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MAX8546EUB

Manufacturer: MAXIM, MAX

Low-Cost / Wide Input Range / Step-Down Controllers with Foldback Current Limit

Partnumber Manufacturer Quantity Availability
MAX8546EUB MAXIM, MAX 788 In Stock

Description and Introduction

Low-Cost / Wide Input Range / Step-Down Controllers with Foldback Current Limit The MAX8546EUB 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:**
- **Manufacturer:** Maxim Integrated (Analog Devices)  
- **Part Number:** MAX8546EUB  
- **Package:** 10-pin µMAX (µSOP)  
- **Input Voltage Range:** 2.5V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.8V to VIN  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 1MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The MAX8546EUB is a high-efficiency, step-down DC-DC converter designed for low-voltage, high-current applications. It integrates a synchronous rectifier, eliminating the need for an external Schottky diode, and operates at a fixed 1MHz switching frequency to minimize external component size. The device supports adjustable output voltage via an external resistor divider.  

### **Features:**
- **High Efficiency (up to 95%)** – Optimized for power-sensitive applications.  
- **Internal Synchronous Rectifier** – Reduces external component count.  
- **1MHz Fixed Switching Frequency** – Allows for small external components.  
- **Low Dropout Operation** – Maintains regulation even when VIN approaches VOUT.  
- **Soft-Start Function** – Reduces inrush current during startup.  
- **Overcurrent and Thermal Protection** – Enhances system reliability.  
- **Adjustable Output Voltage (0.8V to VIN)** – Flexible for various applications.  
- **Low Quiescent Current (40µA typical)** – Improves efficiency at light loads.  

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

Application Scenarios & Design Considerations

Low-Cost / Wide Input Range / Step-Down Controllers with Foldback Current Limit

Alternative Part Number

  • TPS5430DDA --: Widely used 3A step-down converter in SOIC-8 PowerPAD, similar input range and function, easy second source.
  • LM2596S-ADJ --: Robust adjustable buck regulator with similar current capability and wide availability, suitable drop-in style replacement with layout changes.
  • AP6503SP-13 --: Compact 3A synchronous buck converter in SO-8EP, comparable voltage range and pin-compatible footprint for many designs.
  • TPS54331DR --: Wide-input 3A step-down converter in SOIC-8 with similar current rating and function; a common cross-vendor substitute for MAX8546 buck regulators.
  • MP1584EN --: Compact 3A step-down converter with wide input voltage range, suitable as a functional replacement in similar power supply designs.
  • AP1501-ADJ --: 150kHz adjustable step-down converter with similar voltage and current ratings; different prefix and series, cost-effective alternative.

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