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MAX1685EEE from MAXIM,MAXIM - Dallas Semiconductor

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MAX1685EEE

Manufacturer: MAXIM, MAX, MAXIN

Low-Noise / 14V Input / 1A / PWM Step-Down Converters

Partnumber Manufacturer Quantity Availability
MAX1685EEE MAXIM, MAX, MAXIN 2601 In Stock

Description and Introduction

Low-Noise / 14V Input / 1A / PWM Step-Down Converters The MAX1685EEE is a high-efficiency, step-down DC-DC converter manufactured by Maxim Integrated. Below are its specifications, descriptions, and features based on factual data:

### **Specifications:**  
- **Input Voltage Range:** 4V to 28V  
- **Output Voltage Range:** Adjustable from 1.25V to 26V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 100kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-QSOP (Quad Flat Small Outline Package)  

### **Descriptions:**  
The MAX1685EEE is a step-down (buck) DC-DC converter designed for high-efficiency power conversion in applications requiring a regulated output voltage from a higher input voltage. It integrates a power MOSFET switch and control circuitry, reducing external component count. The device operates in pulse-width modulation (PWM) mode for stable performance across varying load conditions.  

### **Features:**  
- **Wide Input Voltage Range (4V to 28V)** – Suitable for automotive, industrial, and battery-powered applications.  
- **Adjustable Output Voltage (1.25V to 26V)** – Set via external resistors.  
- **Internal Power MOSFET Switch** – Simplifies design and reduces external components.  
- **Low Dropout Operation** – Maintains regulation even when input voltage approaches output voltage.  
- **Current-Limit Protection** – Prevents damage from excessive load currents.  
- **Thermal Shutdown** – Protects the device from overheating.  
- **Low Quiescent Current (200µA typical)** – Enhances efficiency in light-load conditions.  
- **Fixed-Frequency PWM Operation** – Ensures predictable noise performance.  

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

Application Scenarios & Design Considerations

Low-Noise / 14V Input / 1A / PWM Step-Down Converters

Alternative Part Number

  • TPS61020DRB --: Boost converter in the same class with integrated switch, suitable as a functional replacement for MAX1685 boost applications.
  • LT1932ES6 --: Constant-current boost LED driver with comparable input range and small package, a common cross for MAX1685 designs.
  • AP3012KTR-G1 --: Low-cost boost converter with similar voltage and current ratings, usable as a drop-in alternative with minor layout checks.
  • TPS62130RGTR --: Step-down DC-DC converter with similar input voltage range and current capability, widely available and pin-compatible in function.
  • LTC3406ES5 --: High-efficiency synchronous buck converter offering comparable switching performance and compact package for similar applications.
  • AP3211KTR-G1 --: Cost-effective step-down converter with similar voltage and current ratings, suitable as a functional replacement in many designs.
  • AP3012KTR --: Low-cost boost converter in small package with similar voltage/current ratings, viable alternative when cost is a priority.

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