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MAX1698EUB from MAXIM,MAXIM - Dallas Semiconductor

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MAX1698EUB

Manufacturer: MAXIM

High-Efficiency Step-Up Current Regulator for LEDs

Partnumber Manufacturer Quantity Availability
MAX1698EUB MAXIM 472 In Stock

Description and Introduction

High-Efficiency Step-Up Current Regulator for LEDs The MAX1698EUB is a step-down DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 500kHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin µMAX (3mm x 5mm)  

### **Descriptions:**
The MAX1698EUB is a high-efficiency, step-down DC-DC converter designed for low-power applications. It integrates a synchronous rectifier for improved efficiency and features a fixed-frequency PWM control scheme. The device is optimized for battery-powered systems, automotive applications, and industrial equipment requiring a compact power solution.

### **Features:**
- **Wide Input Voltage Range (4.5V to 28V)** – Suitable for automotive and industrial applications.  
- **Adjustable Output Voltage (1.25V to 5.5V)** – Set via an external resistor divider.  
- **High Efficiency (Up to 95%)** – Minimizes power loss with synchronous rectification.  
- **500kHz Switching Frequency** – Reduces external component size.  
- **Low Quiescent Current (40µA typical)** – Enhances battery life in standby mode.  
- **Integrated Power MOSFETs** – Simplifies design and reduces external components.  
- **Short-Circuit and Thermal Protection** – Enhances reliability.  
- **Soft-Start Function** – Reduces inrush current during startup.  

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

Application Scenarios & Design Considerations

High-Efficiency Step-Up Current Regulator for LEDs

Alternative Part Number

  • LT1932ES6 --: Constant-current LED driver in a small SOT-23 package with comparable input range and boost topology, a common drop-in alternative for MAX1698 designs.
  • TPS61165DRVR --: Boost-converter white LED driver with integrated switch and PWM dimming, functionally similar to MAX1698 and widely available in a small package.
  • AP3031KTR-G1 --: Low-cost boost LED driver with internal switch and dimming control, suitable as a second-source replacement for MAX1698 in backlight applications.

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