TPS3851H25SQDRBRQ1

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: High Accuracy, Low Power Consumption
• Package: 10-pin VSON (Very Small Outline No-Lead) package
• Essence: Monitors voltage levels and provides reset signals to microcontrollers or other digital systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Threshold Voltage Options: 2.5V
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 3 µA (typical)
• Reset Timeout Period: 200 ms (typical)

Detailed Pin Configuration

1. GND: Ground connection
2. RESET: Active-low reset output
3. MR: Manual reset input
4. VDD: Positive supply voltage
5. SENSE: Voltage monitor input
6. NC: No connect
7. NC: No connect
8. NC: No connect
9. NC: No connect
10. NC: No connect

Functional Features

• Accurate voltage monitoring with a fixed threshold
• Adjustable reset timeout period
• Manual reset input for external system control
• Low quiescent current for power-sensitive applications
• Open-drain reset output for flexibility in interfacing with different systems

Advantages

• High accuracy ensures reliable voltage monitoring
• Low power consumption extends battery life in portable devices
• Flexible reset timeout period allows customization for specific applications
• Manual reset input provides additional control over system operation
• Small package size saves board space

Disadvantages

• Fixed threshold voltage may not be suitable for all applications
• Limited number of pins restricts the functionality of the IC
• No built-in hysteresis for noise immunity

Working Principles

The TPS3851H25SQDRBRQ1 is a voltage supervisor IC that monitors the voltage level of the SENSE pin. It compares this voltage against a fixed threshold and generates a reset signal on the RESET pin when the voltage falls below the threshold. The reset signal remains active until the voltage rises above the threshold or a timeout period elapses. The manual reset input (MR) allows an external system to force a reset regardless of the monitored voltage level.

Detailed Application Field Plans

The TPS3851H25SQDRBRQ1 is commonly used in various applications where reliable voltage monitoring is critical. Some potential application fields include: - Automotive electronics: Ensuring proper voltage levels in automotive systems to prevent malfunctions. - Industrial control systems: Monitoring power supply voltages in industrial automation equipment. - Medical devices: Providing accurate voltage supervision in medical instruments and implants. - Consumer electronics: Protecting sensitive digital systems from voltage fluctuations. - Battery-powered devices: Extending battery life by efficiently managing power consumption.

Detailed and Complete Alternative Models

• TPS3850H25: Similar features and specifications, but with a different package (SOT-23)
• TPS3839K33: Lower supply voltage range (1.6V to 5.5V) and higher accuracy
• MAX823: Comparable voltage supervisor IC with adjustable threshold and timeout period
• ADM6315: Voltage monitor with integrated watchdog timer for enhanced system reliability

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