TPS3808G25DBVT

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low Power, Precision Monitoring, Programmable Delay Time
• Package: SOT-23-6
• Essence: Monitors the voltage level of a system and provides a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Options: 2.25V, 2.5V, 2.63V, 2.93V, 3.08V, 3.3V, 4.38V, 4.63V
• Reset Timeout Period Options: 20ms, 140ms, 280ms, 560ms, 1120ms, 2240ms, 4480ms, 8960ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1.5µA (typical)

Detailed Pin Configuration

The TPS3808G25DBVT has six pins arranged as follows:

```

---

| | --| VDD GND |-- Pin 1: Ground (GND) --| MR RST |-- Pin 2: Reset Output (RST) --| TH VDD |-- Pin 3: Supply Voltage (VDD) --| TD GND |-- Pin 4: Threshold Input (TH) --| CT GND |-- Pin 5: Capacitor Terminal (CT) --| GND GND |-- Pin 6: Ground (GND) |___________| ```

Functional Features

• Precision Monitoring: The TPS3808G25DBVT accurately monitors the voltage level of a system, ensuring reliable operation.
• Programmable Delay Time: The reset timeout period can be programmed to suit specific application requirements.
• Low Power Consumption: With a quiescent current of only 1.5µA, the TPS3808G25DBVT minimizes power consumption.

Advantages and Disadvantages

Advantages: - High precision voltage monitoring - Programmable delay time for flexibility - Low power consumption - Small package size for space-constrained applications

Disadvantages: - Limited threshold voltage options - Not suitable for high voltage applications

Working Principles

The TPS3808G25DBVT operates by comparing the monitored voltage (TH) with a fixed threshold voltage. When the monitored voltage falls below the threshold, the reset output (RST) is asserted, indicating a system reset condition. The reset output remains active until the monitored voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The TPS3808G25DBVT is commonly used in various electronic systems where voltage monitoring and system reset functionality are required. Some typical application fields include:

1. Microcontrollers: Ensuring proper system initialization and preventing erratic behavior during power-up or brownout conditions.
2. Industrial Control Systems: Providing reliable reset signals to ensure safe operation and prevent damage to equipment.
3. Automotive Electronics: Monitoring critical voltage levels to protect sensitive components and ensure proper functioning of vehicle systems.
4. Battery-Powered Devices: Preventing excessive discharge and protecting battery life by initiating a reset when the voltage drops below a certain threshold.

Detailed and Complete Alternative Models

1. TPS3808G01DBVR: Similar to TPS3808G25DBVT but with a different threshold voltage range (1.6V to 6.5V).
2. TPS3808G33DBVR: Similar to TPS3808G25DBVT but with a different threshold voltage range (2.93V to 6.5V).
3. TPS3808G01DBVT: Similar to TPS3808G25DBVT but with a different package (SOT-23-5) and threshold voltage range (1.6V to 6.5V).

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