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MAX1848EKA+T from MAX,MAXIM - Dallas Semiconductor

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MAX1848EKA+T

Manufacturer: MAX

White LED Step-Up Converter in SOT23

Partnumber Manufacturer Quantity Availability
MAX1848EKA+T,MAX1848EKAT MAX 9750 In Stock

Description and Introduction

White LED Step-Up Converter in SOT23 The MAX1848EKA+T is a step-down DC-DC converter manufactured by Maxim Integrated. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 2.5V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.8V to VIN  
- **Output Current:** Up to 600mA  
- **Switching Frequency:** 1.2MHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOT23  

### **Descriptions:**  
The MAX1848EKA+T is a high-efficiency, step-down DC-DC converter designed for portable and battery-powered applications. It integrates synchronous rectification to improve efficiency and reduce external component count. The device operates at a fixed frequency of 1.2MHz, allowing for small external components and compact PCB layouts.  

### **Features:**  
- **Synchronous Rectification:** Improves efficiency and eliminates the need for an external Schottky diode.  
- **Low Dropout Operation:** Allows the output to remain in regulation even when the input voltage approaches the output voltage.  
- **Pulse-Width Modulation (PWM) Mode:** Ensures stable operation under varying load conditions.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Thermal Shutdown Protection:** Safeguards the device from overheating.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation by disabling the converter when the input voltage is too low.  

This information is sourced from the manufacturer's datasheet.

Application Scenarios & Design Considerations

White LED Step-Up Converter in SOT23

Alternative Part Number

  • LT1937ES5#TRMPBF --: Step-up DC-DC converter for white LED backlight in a small SOT-23 package, functionally similar to the MAX1848 and widely used as a drop-in style alternative.
  • AP3015AKTR-G1 --: Boost converter for LED backlight applications with comparable input voltage range and current capability, available in a compact SOT-23 package.
  • TPS61165DRVR --: High-efficiency white LED boost driver with integrated switch, suitable replacement for backlight boost applications, though package and pinout differ so layout changes are required.

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