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MAX638AEPA from MAXIM,MAXIM - Dallas Semiconductor

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MAX638AEPA

Manufacturer: MAXIM

+5V/Adjustable CMOS Step-down Switching Regulator

Partnumber Manufacturer Quantity Availability
MAX638AEPA MAXIM 26 In Stock

Description and Introduction

+5V/Adjustable CMOS Step-down Switching Regulator The MAX638AEPA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX638AEPA  
- **Package:** 8-Pin PDIP  
- **Supply Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Voltage Options:** Adjustable or Fixed (1.6V, 2.7V, 3.0V, 3.3V, 5.0V)  
- **Reset Timeout Period:** 140ms (min)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Quiescent Current:** 5μA (typical)  

### **Descriptions:**  
The MAX638AEPA monitors system voltage levels and provides a reset signal to the microprocessor when the voltage drops below a preset threshold. It ensures proper system operation by holding the microprocessor in reset until the supply voltage stabilizes.  

### **Features:**  
- **Low Power Consumption:** Only 5μA typical quiescent current.  
- **Adjustable or Fixed Reset Threshold:** Supports multiple voltage monitoring options.  
- **Manual Reset Input:** Allows for external reset control.  
- **Power-Fail Comparator:** Provides early warning for impending power failure.  
- **Guaranteed Reset Output Valid Down to VCC = 1V.**  
- **No External Components Required for Fixed Threshold Versions.**  

This device is commonly used in battery-powered systems, embedded controllers, and other applications requiring reliable power monitoring.

Application Scenarios & Design Considerations

+5V/Adjustable CMOS Step-down Switching Regulator

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