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MAX639ESA+T from MAXIM,MAXIM - Dallas Semiconductor

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MAX639ESA+T

Manufacturer: MAXIM, MAX

5V/3.3V/3V Adjustable, High-Efficiency, Low-IQ, Step-Down DC-DC Converters

Partnumber Manufacturer Quantity Availability
MAX639ESA+T,MAX639ESAT MAXIM, MAX 914 In Stock

Description and Introduction

5V/3.3V/3V Adjustable, High-Efficiency, Low-IQ, Step-Down DC-DC Converters The MAX639ESA+T is a voltage regulator manufactured by Maxim Integrated. Below are the factual details about its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4V to 11.5V  
- **Output Voltage:** 5V (fixed)  
- **Output Current:** Up to 225mA  
- **Dropout Voltage:** 0.5V (typical at 100mA)  
- **Quiescent Current:** 10µA (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  

### **Descriptions:**  
- The MAX639ESA+T is a low-dropout (LDO) linear voltage regulator designed for battery-powered applications.  
- It provides a fixed 5V output with high efficiency and low power consumption.  
- The device includes overcurrent and thermal shutdown protection.  

### **Features:**  
- **Low Quiescent Current:** Ensures minimal power loss in standby mode.  
- **Low Dropout Voltage:** Allows operation with input voltages close to the output voltage.  
- **Thermal Shutdown Protection:** Prevents damage due to overheating.  
- **Overcurrent Protection:** Safeguards the regulator and load from excessive current.  
- **Battery-Operated Efficiency:** Optimized for portable and battery-powered devices.  

This information is sourced from the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

5V/3.3V/3V Adjustable, High-Efficiency, Low-IQ, Step-Down DC-DC Converters

Alternative Part Number

  • LM2594M-5.0/NOPB --: Widely available step-down regulator in an SOIC-8 package with similar input voltage range and current capability, suitable as a functional substitute.
  • MC34063ACD-TR --: Classic adjustable switching regulator in SOIC-8 that can be configured for buck conversion, offering a low-cost alternative with broad availability.
  • L5973D013TR --: Integrated step-down switching regulator in SOIC-8 with comparable voltage and current ratings, usable as a drop-in style replacement with minor circuit adjustment.
  • MC34063ADR2G --: Versatile DC-DC converter IC supporting buck, boost, and inverting topologies; low cost and commonly used as a substitute in similar power supply designs.

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