TPS3837J25DBVR

Basic Information Overview

• Category: Integrated Circuits (ICs)
• Use: Voltage Supervisor
• Characteristics:
  • Low Power Consumption
  • Wide Operating Voltage Range
  • Adjustable Reset Threshold
  • Manual Reset Input
• Package: SOT-23 (Small Outline Transistor)
• Essence: Voltage supervisor IC designed to monitor the power supply voltage and provide a reset signal when it falls below a certain threshold.
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.8V to 6.5V
• Reset Threshold Voltage Options: 2.5V, 3.3V, or Adjustable
• Reset Timeout Period: Fixed or Adjustable
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The TPS3837J25DBVR has the following pin configuration:

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

Functional Features

• Monitors the power supply voltage continuously
• Generates a reset signal when the voltage falls below the set threshold
• Provides manual reset capability through the MR pin
• Offers adjustable reset threshold and timeout period options
• Low quiescent current consumption for power-sensitive applications

Advantages and Disadvantages

Advantages: - Wide operating voltage range allows compatibility with various systems - Adjustable reset threshold and timeout period offer flexibility in different applications - Low power consumption prolongs battery life in portable devices

Disadvantages: - Limited number of reset threshold voltage options - SOT-23 package may not be suitable for all PCB layouts

Working Principles

The TPS3837J25DBVR operates by continuously monitoring the supply voltage. When the voltage drops below the set threshold, the IC generates a reset signal on the RESET pin. This signal remains active until the voltage rises above the threshold or a timeout period elapses. The manual reset input (MR) allows for an external reset signal to override the internal monitoring.

Detailed Application Field Plans

The TPS3837J25DBVR is commonly used in various applications where reliable power supply monitoring and system reset functionality are required. Some typical application fields include:

1. Microcontrollers and Microprocessors: Ensures proper system initialization and prevents erratic behavior during power-up or voltage fluctuations.
2. Industrial Control Systems: Provides fault detection and system reset capabilities in critical control systems to maintain operational integrity.
3. Automotive Electronics: Monitors battery voltage and initiates system reset if the voltage drops below a safe threshold, preventing damage to sensitive electronics.
4. Portable Devices: Protects against undervoltage conditions, ensuring safe operation and preventing data loss in devices such as smartphones, tablets, and wearables.

Detailed and Complete Alternative Models

• TPS3839K33DBVR: Similar voltage supervisor IC with a fixed 3.3V reset threshold and adjustable timeout period.
• TPS3808G01DBVR: Voltage supervisor IC with a fixed 2.93V reset threshold and fixed timeout period.
• TPS3890QDBVRQ1: Automotive-grade voltage supervisor IC with adjustable reset threshold and timeout period.

(Note: These alternative models are provided for reference purposes and may have different specifications and features. Please refer to their respective datasheets for detailed information.)

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