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STM1815SWX7F from ST,ST,ST Microelectronics

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STM1815SWX7F

Manufacturer: ST,ST

Low Power Reset Circuit

Partnumber Manufacturer Quantity Availability
STM1815SWX7F ST,ST 24001 In Stock

Description and Introduction

Low Power Reset Circuit The STM1815SWX7F is a microprocessor reset circuit manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Supply Voltage Range:** 1.1V to 5.5V  
- **Reset Threshold Voltage Options:** Adjustable or fixed (1.6V, 2.2V, 2.7V, 3.0V, 3.3V, 5.0V)  
- **Reset Timeout Period:** 140ms (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOT-23-5  

### **Descriptions:**
- The STM1815SWX7F is a low-power voltage detector designed to monitor microprocessor power supplies.  
- It provides a reset signal to the microprocessor when the supply voltage drops below a specified threshold, ensuring proper system initialization.  
- It is suitable for battery-powered and portable applications due to its low quiescent current.  

### **Features:**
- **Low Quiescent Current:** Typically 1µA (minimizes power consumption)  
- **Manual Reset Input:** Allows external reset control  
- **Power-On Reset (POR):** Ensures proper startup  
- **Wide Operating Voltage Range:** Supports 1.1V to 5.5V  
- **Small Form Factor:** SOT-23-5 package for space-constrained designs  
- **High Accuracy:** Tight threshold tolerance for reliable operation  

This device is commonly used in embedded systems, industrial controls, and consumer electronics where reliable power monitoring is required.

Application Scenarios & Design Considerations

Low Power Reset Circuit

Alternative Part Number

  • MAX809SEUR+T --: Pin-compatible voltage supervisor with similar reset threshold and active-low push-pull output, widely used as a drop-in replacement.
  • TPS3808G01DBVR --: Adjustable-threshold supervisor in SOT-23 with open-drain reset, suitable functional substitute with flexible threshold setting.
  • MCP1316MT-29FE/OT --: Low-power voltage supervisor with 2.9V threshold and active-low reset, comparable package and function for reset monitoring.
  • MAX6715SUTZD3+T --: Supervisory circuit with similar reset threshold and active-low push-pull reset output, direct functional replacement in SOT23 package.
  • TPS3808G30DBVR --: Adjustable-threshold voltage supervisor with push-pull active-low reset, comparable supply range and low quiescent current.
  • APX803S-30SA-7 --: Low-cost 3.0V voltage supervisor with active-low reset output, pin-compatible SOT23 alternative for basic reset monitoring.

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