TPS3851G33EDRBT

Overview

Product Category

The TPS3851G33EDRBT belongs to the category of voltage supervisors.

Use

This product is primarily used for monitoring and supervising voltage levels in electronic systems.

Characteristics

• Voltage supervision range: 0.4V to 5.5V
• Adjustable threshold voltage
• Low quiescent current consumption
• Wide operating temperature range: -40°C to 125°C
• Small package size: 6-pin SON (2mm x 2mm)

Package and Quantity

The TPS3851G33EDRBT is available in a small-outline no-lead (SON) package. It is supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Supply voltage range: 0.4V to 5.5V
• Threshold voltage accuracy: ±1%
• Quiescent current: 3µA (typical)
• Power-on reset delay time: 200ms (typical)
• Watchdog timer timeout period: 1.6s (typical)
• Operating temperature range: -40°C to 125°C

Pin Configuration

The TPS3851G33EDRBT has the following pin configuration:

1. GND (Ground)
2. VDD (Supply Voltage)
3. RESET (Reset Output)
4. MR (Manual Reset Input)
5. WDI (Watchdog Timer Input)
6. NC (No Connect)

Functional Features

Voltage Supervision

The TPS3851G33EDRBT provides accurate voltage monitoring and supervision. It continuously monitors the supply voltage and generates a reset signal when it falls below or rises above the user-defined threshold.

Manual Reset

The MR pin allows for manual reset functionality. When this pin is pulled low, it forces a reset condition, regardless of the monitored voltage level.

Watchdog Timer

The TPS3851G33EDRBT includes an integrated watchdog timer. It requires a periodic input signal on the WDI pin to prevent a system reset. If the watchdog input is not toggled within the specified timeout period, a reset signal is generated.

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows for versatile applications.
• Adjustable threshold voltage provides flexibility in voltage monitoring.
• Low quiescent current consumption minimizes power consumption.
• Small package size enables space-saving designs.
• Integrated watchdog timer enhances system reliability.

Disadvantages

• Limited number of pins may restrict additional functionality.
• Not suitable for high-voltage applications above 5.5V.

Working Principles

The TPS3851G33EDRBT operates by comparing the supply voltage with the user-defined threshold voltage. When the supply voltage falls below or rises above this threshold, the device generates a reset signal. The manual reset and watchdog timer features provide additional control and monitoring capabilities.

Application Field Plans

The TPS3851G33EDRBT finds application in various electronic systems that require reliable voltage monitoring and supervision. Some potential fields of application include:

1. Battery-powered devices: Ensuring proper operation and preventing damage due to low battery voltage.
2. Industrial automation: Monitoring power supply integrity to prevent equipment malfunction.
3. Automotive electronics: Protecting sensitive components from voltage fluctuations.
4. Internet of Things (IoT) devices: Enhancing system reliability by monitoring power supply stability.
5. Medical equipment: Ensuring continuous operation and patient safety by monitoring critical voltages.

Alternative Models

1. TPS3839K33DBVR: Similar voltage supervisor with adjustable threshold and smaller SOT-23 package.
2. MAX823LEUK+T: Voltage supervisor with fixed threshold and ultra-small SOT-23 package.
3. ADM6315-26D2ARTZ-R7: Voltage supervisor with adjustable threshold and small SOT-23 package.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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