TPS3707-33DGNG4

Product Overview

Category

The TPS3707-33DGNG4 belongs to the category of voltage supervisors.

Use

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

Characteristics

• Voltage threshold: 3.3V
• Low quiescent current: 1.5µA (typical)
• Wide operating voltage range: 1.8V to 6V
• Adjustable delay time
• Open-drain output
• Small package size: SOT-23-5

Package and Quantity

The TPS3707-33DGNG4 is available in a small SOT-23-5 package. It is typically sold in reels of 3000 units.

Specifications

• Supply voltage range: 1.8V to 6V
• Threshold voltage accuracy: ±1.5%
• Operating temperature range: -40°C to +85°C
• Quiescent current: 1.5µA (typical)
• Delay time options: 20ms, 50ms, 100ms, or adjustable

Pin Configuration

The TPS3707-33DGNG4 has the following pin configuration:

```

---

| | --| VDD GND |-- --| VIN RST |-- --| VOUT NC |-- |___________| ```

• VDD: Power supply input
• GND: Ground
• VIN: Voltage input to be monitored
• RST: Reset output
• VOUT: Open-drain output
• NC: No connection

Functional Features

• Under-voltage detection: Monitors the input voltage and triggers a reset signal when it falls below the threshold.
• Adjustable delay time: Allows customization of the delay before the reset signal is asserted.
• Open-drain output: Provides flexibility in connecting to other devices.
• Low quiescent current: Ensures minimal power consumption during operation.

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows compatibility with various systems.
• Adjustable delay time enables customization for specific requirements.
• Small package size saves board space.
• Low quiescent current minimizes power consumption.

Disadvantages

• Limited threshold voltage options (3.3V in this case).
• Lack of built-in hysteresis may require additional external components for noise immunity.

Working Principles

The TPS3707-33DGNG4 operates by continuously monitoring the input voltage (VIN). When the voltage falls below the threshold (3.3V), the reset output (RST) is asserted, indicating a power failure or an abnormal condition. The delay time can be adjusted to allow for transient voltage fluctuations without triggering a reset. The open-drain output (VOUT) provides a flexible interface for connecting to other devices.

Application Field Plans

The TPS3707-33DGNG4 finds applications in various electronic systems that require voltage supervision and protection. Some potential application fields include:

1. Power supply units: Ensuring stable voltage levels in power supplies to prevent damage to connected devices.
2. Battery-powered devices: Monitoring battery voltage to prevent over-discharge and protect sensitive electronics.
3. Industrial control systems: Providing reliable voltage monitoring in industrial automation and control systems.
4. Automotive electronics: Safeguarding critical automotive components from voltage fluctuations and failures.
5. IoT devices: Protecting IoT devices from unstable power sources and ensuring proper functioning.

Alternative Models

Some alternative models to the TPS3707-33DGNG4 include:

1. TPS3707-25DGNG4: Threshold voltage of 2.5V.
2. TPS3707-50DGNG4: Threshold voltage of 5.0V.
3. TPS3707-ADJGNG4: Adjustable threshold voltage.

These alternative models offer different threshold voltage options to suit specific application requirements.

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