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TPS3805H33QDCKRQ1 from TI,Texas Instruments

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TPS3805H33QDCKRQ1

Manufacturer: TI

Dual Voltage Detector

Partnumber Manufacturer Quantity Availability
TPS3805H33QDCKRQ1 TI 1458 In Stock

Description and Introduction

Dual Voltage Detector The TPS3805H33QDCKRQ1 is a voltage supervisor (reset IC) manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Supply Voltage Range:** 1.8V to 6.5V  
- **Threshold Voltage Options:** Adjustable or fixed (3.3V for H33 variant)  
- **Reset Timeout Period:** Adjustable (via external capacitor) or fixed (200ms typical)  
- **Quiescent Current:** 1.5µA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SC-70 (DCK), 5-pin  
- **Output Type:** Active-low, push-pull  
- **Accuracy:** ±1.5% (typical)  

### **Descriptions:**  
The TPS3805H33QDCKRQ1 is a low-power voltage supervisor designed to monitor system voltages in automotive and industrial applications. It provides a reset signal when the supply voltage drops below a preset threshold, ensuring proper system initialization.  

### **Features:**  
- **Low Power Consumption:** Ultra-low quiescent current (1.5µA)  
- **Wide Supply Range:** Operates from 1.8V to 6.5V  
- **Automotive Qualified:** AEC-Q100 Grade 1  
- **Adjustable or Fixed Threshold:** 3.3V fixed threshold (H33 variant)  
- **Manual Reset Input:** Allows external system reset  
- **Small Package:** SC-70 (5-pin) for space-constrained designs  
- **High Accuracy:** Tight threshold tolerance (±1.5%)  

This device is suitable for battery-powered, automotive, and industrial applications requiring reliable voltage monitoring.

Application Scenarios & Design Considerations

Dual Voltage Detector

Alternative Part Number

  • MAX6746KA29+T --: Single-voltage supervisor with similar 3.3V monitoring threshold and open-drain reset in a small SOT-23 package; a common cross for automotive-grade TI supervisors.
  • APX803L-33SA-7 --: Low-cost 3.3V voltage supervisor with push-pull reset output in SOT-23, functionally similar to the TPS3805 and widely available.
  • MCP1316T-30FE/TO --: 3.0V/3.3V-compatible supervisor with manual reset and active-low reset output, offering comparable monitoring behavior in a compact package.

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