TPS3808G50DBVRG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Supervisor with Programmable Delay Time - Precision Voltage Monitor - Manual Reset Input - Watchdog Timer - Power-On Reset Generator - Supply Voltage Range: 1.6V to 6.5V - Operating Temperature Range: -40°C to +85°C - Small Package Size: SOT-23-5

Package: SOT-23-5

Essence: The TPS3808G50DBVRG4 is a low power supervisor IC that provides voltage monitoring and reset generation functions for microcontrollers, DSPs, and other digital systems.

Packaging/Quantity: The TPS3808G50DBVRG4 is available in tape and reel packaging, with 3000 units per reel.

Specifications

The TPS3808G50DBVRG4 has the following specifications:

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Accuracy: ±0.5%
• Reset Threshold Options: 2.93V, 3.08V, 3.63V, 4.38V, 4.63V, 4.88V, 5.13V, 5.38V
• Manual Reset Input Threshold Voltage: 0.4V
• Watchdog Timeout Period: 1.6s, 3.1s, 6.3s, 12.5s, 25s, 50s, 100s, 200s
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TPS3808G50DBVRG4 has the following pin configuration:

1. GND (Ground)
2. MR (Manual Reset Input)
3. VDD (Supply Voltage)
4. RESET (Reset Output)
5. WDI (Watchdog Input)

Functional Features

The TPS3808G50DBVRG4 offers the following functional features:

• Voltage Monitoring: Monitors the supply voltage and asserts a reset signal when it falls below the programmable threshold.
• Manual Reset Input: Allows for manual assertion of the reset signal.
• Watchdog Timer: Provides a watchdog input to monitor system activity and reset the device if no activity is detected within the programmed timeout period.
• Power-On Reset Generator: Generates a reset signal upon power-up to ensure proper system initialization.

Advantages and Disadvantages

Advantages: - Low power consumption - Wide operating voltage range - Programmable delay time - Small package size

Disadvantages: - Limited number of available threshold options - Lack of adjustable hysteresis

Working Principles

The TPS3808G50DBVRG4 operates by continuously monitoring the supply voltage using an internal voltage reference. When the supply voltage falls below the programmed threshold, the reset output is asserted, indicating a power failure or low voltage condition. The manual reset input allows for external control of the reset signal. The watchdog timer monitors system activity through the WDI input and resets the device if no activity is detected within the programmed timeout period. Upon power-up, the power-on reset generator ensures that the system starts in a known state.

Detailed Application Field Plans

The TPS3808G50DBVRG4 is commonly used in various applications, including but not limited to: - Battery-powered devices - Embedded systems - Industrial automation - Consumer electronics - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models to the TPS3808G50DBVRG4 include: - TPS3808G01DBVR - TPS3808G33DBVR - TPS3808G33DCKR - TPS3808G33DRVT - TPS3808G33DRLR

These alternative models offer similar voltage monitoring and reset generation functionalities, but may have different threshold options, package sizes, or additional features.

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