TPS3838J25DBVR

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low Power, Precision Monitoring, Reset Output
• Package: SOT-23-5
• Essence: Monitors voltage levels and provides a reset signal when necessary
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Options: 2.5V
• Accuracy: ±1%
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The TPS3838J25DBVR has a SOT-23-5 package with the following pin configuration:

1. GND (Ground)
2. VDD (Supply Voltage)
3. MR (Manual Reset)
4. RESET (Reset Output)
5. NC (No Connection)

Functional Features

• Precision Monitoring: The TPS3838J25DBVR accurately monitors the supply voltage and compares it to the threshold voltage.
• Reset Output: When the supply voltage drops below the threshold voltage, the TPS3838J25DBVR asserts the reset output, indicating a power failure or low voltage condition.
• Manual Reset: The MR pin allows for manual resetting of the device, overriding the automatic reset function.

Advantages and Disadvantages

Advantages: - Low power consumption - High accuracy - Small package size - Wide operating temperature range

Disadvantages: - Limited threshold voltage options - No adjustable threshold voltage

Working Principles

The TPS3838J25DBVR operates by continuously monitoring the supply voltage using an internal voltage reference and comparator. When the supply voltage falls below the threshold voltage, the reset output is asserted. The device remains in this state until the supply voltage rises above the threshold voltage or a manual reset signal is applied.

Detailed Application Field Plans

The TPS3838J25DBVR is commonly used in various applications where precise monitoring of the supply voltage is critical. Some potential application fields include:

1. Battery-Powered Devices: Ensuring proper operation and preventing damage due to low battery voltage.
2. Industrial Control Systems: Monitoring power supply integrity to prevent system failures.
3. Automotive Electronics: Protecting sensitive components from voltage fluctuations and ensuring reliable operation.
4. Medical Equipment: Safeguarding critical medical devices by detecting power supply anomalies.
5. IoT Devices: Providing voltage supervision for connected devices to maintain stable operation.

Detailed and Complete Alternative Models

• TPS3839K33DBVR: Similar to TPS3838J25DBVR but with a threshold voltage of 3.3V.
• TPS3840PWR: Voltage supervisor with adjustable threshold voltage and additional features such as watchdog timer and power-on reset delay.

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