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MAX1745EUB from MAXIM,MAXIM - Dallas Semiconductor

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MAX1745EUB

Manufacturer: MAXIM, MAX

High-Voltage, Step-Down DC-DC Controller in レMAX
Partnumber Manufacturer Quantity Availability
MAX1745EUB MAXIM, MAX 220 In Stock

Description and Introduction

High-Voltage, Step-Down DC-DC Controller in レMAX The MAX1745EUB 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 Ic-phoenix technical data files:

### **Specifications:**
- **Input Voltage Range:** 4V to 36V  
- **Output Voltage Range:** Adjustable from 1.25V to 10V  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 500kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin µMAX (MicroMAX)  

### **Descriptions:**
The MAX1745EUB is a high-efficiency, step-down DC-DC converter designed for applications requiring a compact power supply solution. It integrates a synchronous rectifier for improved efficiency and operates over a wide input voltage range, making it suitable for automotive, industrial, and battery-powered systems.

### **Features:**
- **Wide Input Voltage Range (4V–36V)** – Supports various power sources.  
- **Synchronous Rectification** – Enhances efficiency and reduces external component count.  
- **Adjustable Output Voltage (1.25V–10V)** – Set via external resistors.  
- **500kHz Fixed Switching Frequency** – Allows for small external components.  
- **Low Dropout Operation** – Maintains regulation even when input voltage approaches output voltage.  
- **Internal Soft-Start** – Reduces inrush current during startup.  
- **Thermal Shutdown Protection** – Prevents damage from overheating.  
- **Short-Circuit Protection** – Safeguards against output faults.  

This information is strictly factual and sourced from the manufacturer's datasheet.

Application Scenarios & Design Considerations

High-Voltage, Step-Down DC-DC Controller in レMAX

Alternative Part Number

  • LM3478MM --: Widely available low-side N-channel controller in MSOP-10 that can serve as a functional substitute in many boost/flyback designs, with good second-source availability.
  • LT1930ES5 --: Compact high-frequency boost converter in SOT-23-5, suitable as a drop-in style alternative for small step-up applications where board space is critical.
  • MC34063ADR2G --: Very common general-purpose DC-DC switching regulator in SOIC-8, low cost and broadly stocked, usable as a fallback for less demanding boost/inverting designs.
  • LM3485MM --: Pin-compatible step-down controller in the same MSOP-10 package with comparable input voltage range and current-mode control, widely available and cost-effective.
  • LTC1772CS6 --: Similar step-down DC-DC controller with wide input range and low quiescent current, suitable functional replacement though in a smaller SOT-23 package requiring layout adjustment.
  • TPS5420D --: Integrated step-down converter covering similar input/output voltage and current levels, offering a simpler single-chip solution when board space allows redesign.

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