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MAX638ACSA+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX638ACSA+

Manufacturer: MAXIM

5V Adjustable, CMOS, Step-Down Switching Regulator

Partnumber Manufacturer Quantity Availability
MAX638ACSA+,MAX638ACSA MAXIM 14 In Stock

Description and Introduction

5V Adjustable, CMOS, Step-Down Switching Regulator The **MAX638ACSA+** is a microprocessor (μP) supervisory circuit manufactured by **Maxim Integrated**. Below are its key specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Category:** PMIC - Supervisors  
- **Package:** 8-SOIC (0.154", 3.90mm Width)  
- **Reset Threshold Voltage:** Adjustable or Fixed (specific threshold depends on variant)  
- **Operating Voltage Range:** Typically 1.2V to 5.5V  
- **Reset Timeout Period:** Adjustable or fixed (e.g., 140ms, 280ms, or other values depending on variant)  
- **Output Type:** Active-Low or Active-High Reset  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The **MAX638ACSA+** is a precision voltage monitor designed to ensure proper system operation in μP and digital systems.  
- It monitors the power supply voltage and generates a reset signal when the voltage drops below a preset threshold.  
- The device ensures the μP remains in a known state during power-up, power-down, or brownout conditions.  

### **Features:**  
- **Low Power Consumption:** Typically draws very low quiescent current.  
- **Precision Voltage Monitoring:** Accurate reset threshold with tight tolerance.  
- **Manual Reset Input:** Allows external pushbutton reset control.  
- **Wide Operating Voltage Range:** Supports various supply voltages.  
- **Small Package:** Available in space-saving SOIC-8 package.  
- **Guaranteed Reset Output Valid Down to VCC = 1V:** Ensures reliable operation even at low voltages.  

For exact reset threshold values and other detailed electrical characteristics, refer to the **Maxim Integrated datasheet** for the **MAX638ACSA+**.

Application Scenarios & Design Considerations

5V Adjustable, CMOS, Step-Down Switching Regulator

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