TPS3897ADRYR

Product Overview

Category

The TPS3897ADRYR belongs to the category of integrated circuits (ICs) and specifically falls under the voltage supervisors or monitors.

Use

This product is primarily used for monitoring the voltage levels in electronic systems and triggering appropriate actions based on predefined thresholds.

Characteristics

• Voltage monitoring range: The TPS3897ADRYR can monitor voltages ranging from 0.4V to 5.5V.
• Low power consumption: It operates with very low quiescent current, making it suitable for battery-powered applications.
• Adjustable threshold levels: The device allows users to set the desired voltage thresholds for monitoring.
• Wide operating temperature range: It can operate within a temperature range of -40°C to 125°C.
• Small package size: The TPS3897ADRYR comes in a small 6-pin WSON package, which makes it suitable for space-constrained designs.

Package and Quantity

The TPS3897ADRYR is available in a 6-pin WSON package. It is typically sold in reels containing a specified quantity, such as 2500 units per reel.

Specifications

• Supply voltage range: 1.2V to 5.5V
• Quiescent current: 1.8µA (typical)
• Threshold accuracy: ±1.5%
• Reset timeout period: 200ms (typical)
• Power-on reset delay: 20ms (typical)
• Operating temperature range: -40°C to 125°C

Pin Configuration

The TPS3897ADRYR has the following pin configuration:

```

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

• VDD: Power supply input
• GND: Ground reference
• MR: Manual reset input (active-low)
• RESET: Reset output
• VIT: Voltage input to be monitored

Functional Features

1. Voltage Monitoring: The TPS3897ADRYR continuously monitors the voltage level at the VIT pin and compares it with the user-defined threshold levels.
2. Reset Generation: When the monitored voltage falls below the lower threshold, the device asserts the RESET pin, indicating a power failure or an out-of-range condition.
3. Adjustable Thresholds: Users can set the desired upper and lower voltage thresholds using external resistors connected to the VIT pin.
4. Manual Reset: The MR pin allows users to manually reset the device by pulling it low.

Advantages and Disadvantages

Advantages

• Wide operating voltage range enables compatibility with various electronic systems.
• Low quiescent current consumption makes it suitable for battery-powered applications.
• Adjustable threshold levels provide flexibility in voltage monitoring.
• Small package size allows for space-efficient designs.

Disadvantages

• Lack of built-in hysteresis may lead to potential oscillations near the threshold voltage.
• Limited number of pins restricts additional functionalities without external circuitry.

Working Principles

The TPS3897ADRYR operates based on a voltage comparator that continuously compares the voltage at the VIT pin with the user-defined threshold levels. When the voltage falls below the lower threshold, the device triggers the reset output, indicating a power failure or an out-of-range condition. The manual reset input allows users to override the monitoring process and manually reset the device.

Application Field Plans

The TPS3897ADRYR finds applications in various fields where voltage monitoring is critical. Some potential application areas include:

1. Battery-Powered Devices: Portable electronics, such as smartphones, tablets, and wearables, can benefit from the TPS3897ADRYR's low power consumption and voltage monitoring capabilities to ensure proper functioning and prevent unexpected shutdowns.
2. Industrial Control Systems: The device can be used in industrial control systems to monitor power supply voltages and trigger appropriate actions in case of voltage deviations, ensuring safe and reliable operation.
3. Automotive Electronics: In automotive applications, the TPS3897ADRYR can be employed to monitor critical voltage levels, such as battery voltage or sensor supply voltages, to detect faults and initiate necessary corrective measures.

Alternative Models

1. TPS3808G01DBVR: This is a similar voltage supervisor IC from Texas Instruments with adjustable threshold levels and a small SOT-23 package.
2. MAX823LEUK+: Maxim Integrated offers this voltage monitor IC with adjustable thresholds and a 5-pin SOT-23 package.
3. ADM6315-26D4ARTZ-R7: Analog Devices provides this voltage supervisor IC with fixed threshold levels and a 4-pin SOT-143 package.

These alternative models offer similar functionality and can be considered based