UCC39422PWTRG4

Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the voltage level of a power supply - Generates a reset signal when the voltage falls below a specified threshold - Prevents system malfunction during power fluctuations or failures

Package: TSSOP-14

Essence: The UCC39422PWTRG4 is a voltage supervisor IC that ensures stable operation of electronic systems by monitoring the power supply voltage and generating a reset signal when it falls below a predetermined threshold.

Packaging/Quantity: The UCC39422PWTRG4 is available in a TSSOP-14 package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 3.3V, 4.38V, 4.63V
• Reset Timeout Period: 140ms, 560ms, 1120ms, 2240ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)
• Output Type: Active-Low, Open-Drain

Detailed Pin Configuration

The UCC39422PWTRG4 has a total of 14 pins, each serving a specific function:

1. GND: Ground reference for the IC.
2. MR: Master Reset input pin used to override the reset output.
3. VDD: Positive power supply voltage input.
4. RESET: Active-low reset output.
5. VDD: Positive power supply voltage input.
6. RESET: Active-low reset output.
7. VDD: Positive power supply voltage input.
8. RESET: Active-low reset output.
9. VDD: Positive power supply voltage input.
10. RESET: Active-low reset output.
11. VDD: Positive power supply voltage input.
12. RESET: Active-low reset output.
13. VDD: Positive power supply voltage input.
14. RESET: Active-low reset output.

Functional Features

• Voltage Monitoring: The UCC39422PWTRG4 continuously monitors the power supply voltage and compares it to a preset threshold.
• Reset Generation: When the voltage falls below the threshold, the IC generates an active-low reset signal.
• Reset Timeout: The IC includes a programmable reset timeout period, allowing for customization based on system requirements.
• Manual Override: The master reset (MR) pin allows for manual override of the reset output.

Advantages and Disadvantages

Advantages: - Ensures stable operation of electronic systems during power fluctuations or failures. - Programmable reset timeout period provides flexibility. - Low quiescent current minimizes power consumption. - Small package size enables space-efficient designs.

Disadvantages: - Limited number of available reset threshold voltage options. - Lack of built-in hysteresis may result in potential noise-related issues.

Working Principles

The UCC39422PWTRG4 operates by continuously monitoring the power supply voltage using an internal voltage reference. When the voltage falls below the preset threshold, the IC triggers the reset output, which can be used to initiate system recovery or perform other necessary actions. The reset timeout period ensures that the reset signal remains active for a specified duration, preventing false resets due to temporary voltage fluctuations.

Detailed Application Field Plans

The UCC39422PWTRG4 is widely used in various applications where reliable voltage monitoring and reset generation are critical. Some common application fields include:

1. Microcontrollers: Ensuring proper initialization and safe operation of microcontroller-based systems.
2. Industrial Control Systems: Preventing system malfunctions and data corruption during power disturbances.
3. Automotive Electronics: Protecting sensitive electronic components from voltage fluctuations in automotive applications.
4. Power Supply Units: Monitoring the output voltage of power supplies to prevent damage to connected devices.

Detailed and Complete Alternative Models

1. UCC39422PWTR: Similar to UCC39422PWTRG4, but without RoHS compliance.
2. UCC39422D: SOIC-14 package variant of UCC39422PWTRG4.
3. UCC39422PWP: TSSOP-14 package variant with a different pin configuration.
4. UCC39422DR: SOIC-14 package variant without RoHS compliance.

These alternative models offer similar functionality and can be considered as substitutes for the UCC39422PWTRG4 based on specific application requirements.

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