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MAX638BCJA from MAX,MAXIM - Dallas Semiconductor

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MAX638BCJA

Manufacturer: MAX

5V Adjustable, CMOS, Step-Down Switching Regulator

Partnumber Manufacturer Quantity Availability
MAX638BCJA MAX 266 In Stock

Description and Introduction

5V Adjustable, CMOS, Step-Down Switching Regulator The MAX638BCJA is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Manufacturer:** Maxim Integrated  
- **Type:** Microprocessor Supervisory Circuit  
- **Package:** 8-pin CERDIP (J)  
- **Operating Voltage Range:** 1.2V to 5.5V  
- **Reset Threshold Accuracy:** ±1.5% (typical)  
- **Reset Timeout Period:** Adjustable (external capacitor) or fixed (200ms typical)  
- **Operating Temperature Range:** 0°C to +70°C (Commercial)  
- **Quiescent Current:** 5µA (typical)  

### **Descriptions:**
- The MAX638BCJA monitors microprocessor power supplies and generates a reset signal if the voltage drops below a preset threshold.  
- It ensures proper system operation by holding the microprocessor in reset until the supply voltage stabilizes.  
- The device features manual reset input and watchdog timer functionality.  

### **Features:**
- **Low Power Consumption:** 5µA typical supply current.  
- **Adjustable Reset Threshold:** Allows customization for different voltage levels.  
- **Watchdog Timer:** Monitors microprocessor activity; resets if the watchdog is not toggled within a set time.  
- **Manual Reset Input:** Allows for external reset triggering.  
- **Guaranteed Reset Output Valid Down to VCC = 1V.**  
- **No External Components Required** for basic operation (except for adjustable timeout).  

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

Application Scenarios & Design Considerations

5V Adjustable, CMOS, Step-Down Switching Regulator

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