TPS3851G50EDRBR

Basic Information Overview

• Category: Integrated Circuits (ICs)
• Use: Voltage Supervisors
• Characteristics: Low Power, Precision, Programmable Delay Time
• Package: 6-WSON (2x2)
• Essence: The TPS3851G50EDRBR is a voltage supervisor IC that monitors the power supply voltage of a system and provides a reset signal to the microcontroller or other devices when the voltage falls below a certain threshold.
• Packaging/Quantity: Tape & Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 1.5V to 6.5V
• Threshold Voltage Options: 1.8V, 2.5V, 3.3V, 5V
• Reset Timeout Period: Programmable from 1ms to 10s
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 1.5µA (typical)

Detailed Pin Configuration

The TPS3851G50EDRBR has a 6-WSON package with the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | GND | Ground | | 2 | RESET | Reset Output| | 3 | MR | Manual Reset Input | | 4 | VDD | Supply Voltage | | 5 | VIT | Voltage Input | | 6 | NC | No Connection |

Functional Features

• Precision Monitoring: The TPS3851G50EDRBR provides accurate monitoring of the power supply voltage, ensuring reliable operation of the system.
• Programmable Delay Time: The reset timeout period can be easily programmed using external resistors and capacitors, allowing flexibility in system design.
• Manual Reset Input: The MR pin allows for a manual reset of the system, providing an additional level of control.

Advantages and Disadvantages

Advantages: - Low Power Consumption: The TPS3851G50EDRBR operates with a low quiescent current, minimizing power consumption in battery-powered applications. - Small Package Size: The 6-WSON package is compact, saving board space in space-constrained designs. - Wide Operating Temperature Range: The IC can operate reliably in extreme temperature conditions.

Disadvantages: - Limited Threshold Voltage Options: The available threshold voltage options may not cover all voltage requirements of different systems. - No Adjustable Hysteresis: The hysteresis level is fixed, which may not be suitable for applications requiring adjustable hysteresis.

Working Principles

The TPS3851G50EDRBR monitors the voltage at the VIT pin. When the voltage falls below the programmed threshold voltage, the RESET pin is asserted low, indicating a power failure or undervoltage condition. The reset signal remains active until the voltage rises above the threshold voltage and the reset timeout period elapses.

Detailed Application Field Plans

The TPS3851G50EDRBR is widely used in various applications where reliable voltage monitoring is critical. Some potential application fields include: - Battery-Powered Devices: Portable electronics, IoT devices, and wearable devices benefit from the low power consumption and precise voltage monitoring capabilities of the TPS3851G50EDRBR. - Industrial Control Systems: The IC ensures proper operation of industrial control systems by providing a reset signal when the power supply voltage drops below the specified threshold. - Automotive Electronics: The TPS3851G50EDRBR is suitable for automotive applications, such as engine control units (ECUs), where voltage supervision is essential for safe and reliable operation.

Detailed and Complete Alternative Models

• TPS3850: Similar voltage supervisor IC with adjustable threshold voltage options.
• TPS3839: Voltage supervisor IC with fixed threshold voltage options but adjustable hysteresis levels.
• MAX823: Voltage monitor IC with integrated watchdog timer functionality.

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