TPS3838K33DRVRG4

Product Overview

Category

The TPS3838K33DRVRG4 belongs to the category of voltage supervisors.

Use

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

Characteristics

• Voltage threshold: 3.3V
• Low quiescent current: 1.5µA (typical)
• Wide operating temperature range: -40°C to +125°C
• Adjustable delay time
• Power-on reset generator with fixed delay time
• Small package size: SOT-23-5

Package and Quantity

The TPS3838K33DRVRG4 is available in a small SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Supply voltage range: 1.6V to 10V
• Reset threshold accuracy: ±1%
• Reset output options: active low, open-drain
• Delay time options: 100ms, 200ms, 400ms, 800ms
• Quiescent current: 1.5µA (typical), 2.5µA (maximum)
• Power-on reset pulse width: 20ms (typical)

Pin Configuration

The TPS3838K33DRVRG4 has the following pin configuration:

```

---

| | --|VDD |-- Pin 1: Supply Voltage (VDD) --|GND |-- Pin 2: Ground (GND) --|MR |-- Pin 3: Manual Reset Input (active low) --|RST |-- Pin 4: Reset Output (active low) --|CT |-- Pin 5: Delay Time Capacitor Connection |____| ```

Functional Features

• Power-on reset generation: The TPS3838K33DRVRG4 generates a reset signal when the supply voltage rises above the threshold voltage.
• Adjustable delay time: The delay time for the reset signal can be adjusted using an external capacitor connected to the CT pin.
• Manual reset input: The device provides a manual reset input (MR) that allows an external signal to force a reset.

Advantages and Disadvantages

Advantages

• Low quiescent current consumption, making it suitable for battery-powered applications.
• Wide operating temperature range enables usage in harsh environments.
• Small package size allows for space-efficient designs.
• Adjustable delay time provides flexibility in system design.

Disadvantages

• Limited reset threshold accuracy compared to some other voltage supervisors.
• Only offers active low or open-drain reset output options.

Working Principles

The TPS3838K33DRVRG4 operates by monitoring the supply voltage. When the voltage rises above the threshold level (3.3V), the device generates a reset signal on the RST pin. The delay time for the reset signal can be adjusted using an external capacitor connected to the CT pin. Additionally, a manual reset input (MR) is provided to allow an external signal to force a reset.

Application Field Plans

The TPS3838K33DRVRG4 is commonly used in various electronic systems where reliable voltage monitoring is crucial. Some potential application fields include:

1. Battery-powered devices: The low quiescent current consumption makes it suitable for portable electronics, such as smartphones, tablets, and wearables.
2. Industrial automation: It can be used in control systems to ensure proper voltage levels for sensors, actuators, and communication modules.
3. Automotive electronics: The wide operating temperature range makes it suitable for automotive applications, including engine control units, infotainment systems, and safety modules.
4. Power supply units: It can be employed in power supplies to monitor the output voltage and provide a reliable reset signal in case of voltage fluctuations.

Alternative Models

• TPS3838K33DBVRG4
• TPS3838K33DCKRG4
• TPS3838K33DRLR

These alternative models offer similar functionality and characteristics, providing options for different package types or quantities.

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