TPS3851H30EDRBR

Basic Information Overview

• Category: Integrated Circuits (ICs)
• Use: Voltage Supervisors
• Characteristics: Low Power, Precision, Adjustable Threshold
• Package: 6-WSON (2x2)
• Essence: Monitors voltage levels and provides a reset signal 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: 2.93V, 3.08V, 3.15V, 3.3V, 3.63V, 4.38V, 4.63V, 4.75V
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 1.8µA (typical)
• Reset Timeout Period: 200ms (typical)

Detailed Pin Configuration

The TPS3851H30EDRBR has the following pin configuration:

1. GND: Ground
2. RESET: Active-Low Reset Output
3. VDD: Supply Voltage Input
4. MR: Manual Reset Input
5. TH: Threshold Voltage Selection Input
6. NC: No Connection

Functional Features

• Precision Monitoring: The TPS3851H30EDRBR accurately monitors the supply voltage and provides a reset signal when it falls below the selected threshold voltage.
• Adjustable Threshold: The device offers multiple threshold voltage options, allowing flexibility in setting the desired voltage level for triggering the reset signal.
• Low Power Consumption: With a quiescent current of only 1.8µA, the TPS3851H30EDRBR minimizes power consumption, making it suitable for battery-powered applications.
• Reset Timeout: The device includes a reset timeout period of 200ms, ensuring that the reset signal remains active for a sufficient duration after the voltage returns to an acceptable level.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring - Adjustable threshold voltage - Low power consumption - Reset timeout feature

Disadvantages: - Limited threshold voltage options - Noisy environments may affect accuracy

Working Principles

The TPS3851H30EDRBR operates by continuously monitoring the supply voltage through the TH pin. When the voltage falls below the selected threshold voltage, the RESET pin is driven low, indicating a reset condition. The reset signal remains active for the specified timeout period, even if the voltage returns to an acceptable level within that time. The MR pin allows for manual reset control, overriding the automatic reset functionality.

Detailed Application Field Plans

The TPS3851H30EDRBR finds applications in various fields, including:

1. Industrial Control Systems: It ensures reliable operation by monitoring the supply voltage in industrial control systems, triggering a reset when necessary.
2. Automotive Electronics: The device provides voltage supervision in automotive electronics, preventing malfunctions due to voltage fluctuations.
3. Battery-Powered Devices: It helps extend battery life by monitoring the voltage in portable devices and initiating a reset when the voltage drops below the desired level.
4. Home Automation: The TPS3851H30EDRBR ensures stable operation of home automation systems by monitoring the power supply and initiating a reset if needed.

Detailed and Complete Alternative Models

1. TPS3850H30DBVR: SOT-23 package, adjustable threshold voltage, similar specifications.
2. TPS3839K33DBVR: SOT-23 package, fixed threshold voltage (3.3V), lower quiescent current.
3. MAX823LEUK+T: SOT-23 package, adjustable threshold voltage, higher reset timeout period.

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