33 The TPS3820-50QDBVRQ1 is a voltage supervisor (reset IC) manufactured by Texas Instruments (TI). Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Supply Voltage Range:** 1.7V to 6.5V
- **Threshold Voltage (VIT):** 4.63V (typical for -50 variant)
- **Threshold Accuracy:** ±1.5% (max)
- **Reset Timeout Period:** 200ms (min)
- **Operating Temperature Range:** -40°C to +125°C
- **Quiescent Current:** 3.5µA (typical)
- **Package:** SOT-23-5 (DBV)
### **Descriptions:**
- The TPS3820-50QDBVRQ1 is a watchdog timer and voltage supervisor designed for monitoring power supplies in automotive and industrial applications.
- It provides a reset signal to the host system when the supply voltage falls below a preset threshold or if the watchdog timer is not serviced within the timeout period.
- It is AEC-Q100 qualified for automotive applications.
### **Features:**
- **Low Power Consumption:** Ultra-low quiescent current (3.5µA typical).
- **Adjustable Reset Time Delay:** External capacitor allows customization of reset delay.
- **Manual Reset Input:** Supports an external push-button reset.
- **Watchdog Timer:** Ensures system integrity by monitoring microcontroller activity.
- **Open-Drain Reset Output:** Compatible with multiple voltage levels.
- **Automotive Qualified:** AEC-Q100 Grade 1 certified.
This device is commonly used in automotive electronics, industrial control systems, and battery-powered applications.
