TPS3851G18SDRBR

Product Overview

Category

The TPS3851G18SDRBR belongs to the category of voltage supervisors.

Use

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

Characteristics

• Voltage threshold: 1.8V
• Supply voltage range: 1.6V to 6V
• Low quiescent current: 2.5µA (typical)
• Adjustable power-on reset delay time
• Wide temperature range: -40°C to +125°C
• Small package size: 6-pin WSON

Package and Quantity

The TPS3851G18SDRBR is available in a small 6-pin WSON package. It is typically sold in reels with a quantity of 2500 units per reel.

Specifications

• Voltage threshold accuracy: ±1%
• Power supply current: 2.5µA (typical)
• Power-on reset delay time range: 100ms to 10s
• Operating temperature range: -40°C to +125°C
• Input voltage range: 1.6V to 6V
• Output type: Active low, push-pull

Pin Configuration

The TPS3851G18SDRBR has the following pin configuration:

```

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| | --| VDD | --| GND | --| MR | --| RESET | --| NRESET | |___________| ```

Functional Features

• Power-on reset generation
• Undervoltage detection
• Manual reset input
• Active-low reset output
• Adjustable reset delay time

Advantages and Disadvantages

Advantages

• Accurate voltage threshold monitoring
• Low quiescent current consumption
• Wide operating temperature range
• Small package size for space-constrained applications

Disadvantages

• Limited input voltage range (1.6V to 6V)
• Fixed output type (active low, push-pull)

Working Principles

The TPS3851G18SDRBR monitors the input voltage and generates a reset signal when the voltage falls below the specified threshold. It ensures proper system initialization and prevents erratic behavior during power-up or brownout conditions. The adjustable reset delay time allows for customization based on specific application requirements.

Application Field Plans

The TPS3851G18SDRBR finds applications in various electronic systems where voltage monitoring and supervision are critical. Some potential application fields include:

1. Battery-powered devices: Ensuring proper shutdown and restart sequences to protect data integrity.
2. Industrial control systems: Monitoring power supply voltages to prevent equipment damage or malfunction.
3. Automotive electronics: Detecting undervoltage conditions to trigger appropriate actions and prevent system failures.
4. Telecommunications equipment: Providing reliable power-on reset functionality to ensure stable operation.

Alternative Models

For users seeking alternative options, the following models can be considered:

1. TPS3839K33DBVR
2. MAX823LEUK-T
3. ADM708TARZ
4. LTC2910IGN#PBF

These models offer similar voltage supervisory features and can be evaluated based on specific application requirements.

In conclusion, the TPS3851G18SDRBR is a voltage supervisor with accurate monitoring capabilities, low power consumption, and a wide temperature range. Its small package size makes it suitable for space-constrained applications. However, it has a limited input voltage range and a fixed output type. With its functional features and advantages, it finds applications in various fields such as battery-powered devices, industrial control systems, automotive electronics, and telecommunications equipment. Users can also consider alternative models based on their specific needs.