TPS3702AX18DDCR

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Monitors undervoltage and overvoltage conditions - Provides a reset signal when voltage is outside the specified range - Low quiescent current consumption - Wide operating voltage range - Small package size

Package: SOT-23-6

Essence: The TPS3702AX18DDCR is an integrated circuit that serves as a voltage supervisor. It ensures that the voltage remains within a specified range and provides a reset signal if the voltage goes beyond the set limits.

Packaging/Quantity: The TPS3702AX18DDCR is available in a small SOT-23-6 package. It is typically sold in reels or tubes containing multiple units.

Specifications

The TPS3702AX18DDCR has the following specifications:

• Supply Voltage Range: 1.8V to 6V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)
• Reset Threshold Accuracy: ±1.5%
• Reset Time Delay: 200ms (typical)
• Output Type: Active-Low, Open Drain

Pin Configuration

The TPS3702AX18DDCR has a six-pin configuration:

```

---

| | --| VDD GND |-- Pin 1: Ground (GND) --| RESET OUT |-- Pin 2: Reset Output --| VIT VDD |-- Pin 3: Supply Voltage (VDD) --| VIN GND |-- Pin 4: Voltage Input (VIN) --| VOK GND |-- Pin 5: Voltage OK Output |___________| ```

Functional Features

The TPS3702AX18DDCR offers the following functional features:

1. Voltage Monitoring: Monitors the input voltage (VIN) and compares it to the preset threshold levels.
2. Reset Signal Generation: Generates a reset signal (RESET OUT) when the voltage falls below or exceeds the specified thresholds.
3. Power-On Reset Delay: Provides a delay of approximately 200ms after power is applied before releasing the reset signal.
4. Voltage OK Output: Indicates the status of the monitored voltage through the Voltage OK output pin (VOK).

Advantages and Disadvantages

Advantages: - Efficient voltage monitoring and reset signal generation - Wide operating voltage range allows for versatile applications - Low quiescent current consumption helps conserve power - Small package size enables space-saving designs

Disadvantages: - Limited number of pins may restrict additional functionality - Fixed reset time delay may not be suitable for all applications

Working Principles

The TPS3702AX18DDCR operates by continuously monitoring the input voltage (VIN). It compares the voltage level with the preset threshold values. If the voltage falls below or exceeds these thresholds, the IC generates a reset signal (RESET OUT). This signal can be used to initiate system resets or perform other necessary actions.

The IC also includes a power-on reset delay feature, which ensures that the reset signal is not immediately released upon power-up. This delay provides stability during the initial power-up phase.

Detailed Application Field Plans

The TPS3702AX18DDCR finds applications in various fields where voltage supervision is critical. Some potential application areas include:

1. Power Supply Units: Ensuring stable voltage levels in power supply units for electronic devices.
2. Battery-Powered Systems: Monitoring battery voltage to prevent over-discharge or overcharge conditions.
3. Industrial Control Systems: Providing voltage supervision in industrial control systems to prevent damage to sensitive components.
4. Automotive Electronics: Monitoring voltage levels in automotive electronics to ensure proper operation and prevent damage.

Detailed and Complete Alternative Models

1. TPS3702AX33DDCR: Similar to TPS3702AX18DDCR, but with a different reset threshold voltage (3.3V).
2. TPS3702AX50DDCR: Similar to TPS3702AX18DDCR, but with a different reset threshold voltage (5V).
3. TPS3702AX25DDCR: Similar to TPS3702AX18DDCR, but with a different reset threshold voltage (2.5V).

These alternative models offer similar functionality but cater to different voltage requirements.

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