TPS3808G15DRVR

Basic Information Overview

• Category: Integrated Circuits (ICs)
• Use: Voltage Supervisors
• Characteristics: Low Power, Precision, Programmable Delay Time
• Package: SOT-23-5
• Essence: Voltage Supervisor with Programmable Delay Time
• Packaging/Quantity: Tape & Reel (3000 pieces per reel)

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.63V, 4.38V, and Adjustable
• Reset Timeout Period: 1.6ms, 10ms, 100ms, or Adjustable
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1.5µA (typical)
• Output Type: Active-Low, Open-Drain

Detailed Pin Configuration

The TPS3808G15DRVR has a total of five pins:

1. GND: Ground connection.
2. VDD: Positive supply voltage input.
3. MR: Manual reset input. When pulled low, it forces the reset output to be active.
4. RESET: Active-low reset output. It is an open-drain output that goes low when the monitored voltage falls below the threshold voltage.
5. CT: Capacitor terminal for programming the delay time.

Functional Features

• Voltage Monitoring: The TPS3808G15DRVR continuously monitors the supply voltage and asserts the reset output when the voltage falls below the programmed threshold.
• Programmable Delay Time: The delay time between the monitored voltage falling below the threshold and the assertion of the reset output can be programmed using an external capacitor connected to the CT pin.
• Manual Reset Input: The MR pin allows for manual assertion of the reset output, overriding the voltage monitoring function.
• Low Power Consumption: The TPS3808G15DRVR operates with a low quiescent current of 1.5µA, making it suitable for power-sensitive applications.

Advantages and Disadvantages

Advantages: - Precision Voltage Monitoring: The TPS3808G15DRVR provides accurate voltage monitoring, ensuring reliable system operation. - Programmable Delay Time: The ability to adjust the delay time allows for customization based on specific application requirements. - Low Power Consumption: The low quiescent current minimizes power consumption, extending battery life in portable devices.

Disadvantages: - Limited Threshold Voltage Options: The available threshold voltage options may not cover all voltage monitoring requirements. - Single Output Type: The TPS3808G15DRVR only provides an active-low, open-drain output, limiting its compatibility with certain systems.

Working Principles

The TPS3808G15DRVR works by comparing the supply voltage against a programmed threshold voltage. When the supply voltage falls below the threshold, the reset output is asserted. The delay time between the voltage drop and the assertion of the reset output can be adjusted using an external capacitor connected to the CT pin. The manual reset input (MR) allows for immediate assertion of the reset output, bypassing the voltage monitoring function.

Detailed Application Field Plans

The TPS3808G15DRVR is commonly used in various applications where reliable voltage monitoring is critical. Some potential application fields include:

1. Battery-Powered Devices: The TPS3808G15DRVR ensures proper shutdown or system reset when the battery voltage drops below a safe level, preventing damage to the device or data loss.
2. Industrial Control Systems: It provides voltage supervision in industrial control systems, triggering appropriate actions when the supply voltage deviates from the desired range.
3. Automotive Electronics: The TPS3808G15DRVR monitors the vehicle's power supply, enabling timely shutdown or reset in case of voltage fluctuations or faults.
4. Medical Equipment: It ensures reliable operation of critical medical equipment by monitoring the power supply and initiating appropriate actions in case of voltage anomalies.

Detailed and Complete Alternative Models

1. TPS3808G01: Similar to TPS3808G15DRVR but with a fixed threshold voltage of 2.93V.
2. TPS3808G33: Voltage supervisor with a fixed threshold voltage of 3.08V.
3. TPS3808G36: Voltage supervisor with a fixed threshold voltage of 3.63V.
4. TPS3808G43: Voltage supervisor with a fixed threshold voltage of 4.38V.
5. TPS3808Gxx: Adjustable threshold voltage version, allowing customization within a specified range.

(Note: The "xx" in TPS3808Gxx represents the adjustable threshold voltage range.)

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