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TPS3802L30DCKR

TPS3802L30DCKR

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Supervisor with Programmable Delay Time - Precision Voltage Monitor - Manual Reset Input - Watchdog Timer - Power-On Reset Generator - Supply Voltage Range: 1.6V to 6.5V - Operating Temperature Range: -40°C to +85°C - Package Type: SC-70, SOT-23, SOT-323, and X2SON - RoHS Compliant

Package/Quantity: - SC-70: 3000 units per reel - SOT-23: 3000 units per reel - SOT-323: 3000 units per reel - X2SON: 250 units per reel

Specifications

The TPS3802L30DCKR is a low-power voltage supervisor IC designed for monitoring the power supply voltage of digital systems. It provides a reset signal whenever the monitored voltage falls below a preset threshold or exceeds the upper threshold. The device offers programmable delay time, precision voltage monitoring, manual reset input, watchdog timer, and power-on reset generation.

Key specifications include: - Supply Voltage Range: 1.6V to 6.5V - Threshold Accuracy: ±1.5% - Quiescent Current: 3 µA (typical) - Reset Timeout Period: 200 ms (typical) - Watchdog Timeout Period: 1.6 s (typical) - Manual Reset Input Threshold: 0.4 V (typical)

Pin Configuration

The TPS3802L30DCKR features a 5-pin package with the following pin configuration:

  1. GND (Ground)
  2. MR (Manual Reset)
  3. VDD (Supply Voltage)
  4. RESET (Reset Output)
  5. N/C (No Connection)

Functional Features

The TPS3802L30DCKR offers the following functional features:

  1. Voltage Monitoring: Monitors the supply voltage and generates a reset signal when it falls below or exceeds the preset thresholds.
  2. Programmable Delay Time: Allows users to set the delay time before generating the reset signal.
  3. Precision Voltage Monitoring: Provides accurate voltage monitoring with a threshold accuracy of ±1.5%.
  4. Manual Reset Input: Allows for manual reset by asserting the MR pin to a low logic level.
  5. Watchdog Timer: Detects system malfunctions by monitoring the activity on the MR pin and generating a reset if no activity is detected within the watchdog timeout period.
  6. Power-On Reset Generator: Generates a reset signal during power-up to ensure proper initialization of the system.

Advantages and Disadvantages

Advantages: - Low power consumption - Wide supply voltage range - Programmable delay time - Accurate voltage monitoring - Manual reset capability - Watchdog timer for system reliability - Power-on reset generation

Disadvantages: - Limited package options - No adjustable threshold levels

Working Principles

The TPS3802L30DCKR operates by continuously monitoring the supply voltage using an internal voltage reference. When the voltage falls below the lower threshold or exceeds the upper threshold, the device asserts the RESET pin to a low logic level, indicating a reset condition. The delay time can be programmed using external components to allow for proper stabilization of the system before generating the reset signal.

Additionally, the device includes a watchdog timer that monitors the activity on the MR pin. If no activity is detected within the watchdog timeout period, a reset signal is generated to prevent system malfunctions.

Application Field Plans

The TPS3802L30DCKR is commonly used in various applications, including: - Microcontrollers - Embedded Systems - Industrial Automation - Power Management Systems - Battery-Powered Devices - Consumer Electronics

Alternative Models

Alternative models that offer similar functionality to the TPS3802L30DCKR include: - TPS3808G01: Low Quiescent Current Voltage Supervisor with Programmable Delay Time - TPS3839K33: Ultra-Low Quiescent Current Voltage Supervisor with Programmable Delay Time - TPS3890: Precision Voltage Supervisor with Watchdog Timer and Manual Reset Input

These alternative models can be considered based on specific application requirements and desired features.

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Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням TPS3802L30DCKR у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of TPS3802L30DCKR in technical solutions:

  1. Q: What is the TPS3802L30DCKR? A: The TPS3802L30DCKR is a voltage supervisor and reset IC designed to monitor the power supply voltage of a system and assert a reset signal if the voltage falls below a specified threshold.

  2. Q: What is the operating voltage range of the TPS3802L30DCKR? A: The TPS3802L30DCKR operates with a supply voltage range from 1.6V to 6.5V.

  3. Q: How does the TPS3802L30DCKR assert a reset signal? A: When the monitored voltage drops below the threshold voltage, the TPS3802L30DCKR asserts an active-low reset signal on its RESET output pin.

  4. Q: Can I adjust the threshold voltage of the TPS3802L30DCKR? A: No, the TPS3802L30DCKR has a fixed threshold voltage of 3.0V.

  5. Q: What is the typical quiescent current consumption of the TPS3802L30DCKR? A: The TPS3802L30DCKR has a typical quiescent current consumption of 7 µA.

  6. Q: Is the TPS3802L30DCKR suitable for battery-powered applications? A: Yes, the low quiescent current and wide operating voltage range make the TPS3802L30DCKR suitable for battery-powered applications.

  7. Q: Does the TPS3802L30DCKR have any built-in delay for the reset signal? A: Yes, the TPS3802L30DCKR has a fixed delay of approximately 200 ms before asserting the reset signal after the voltage falls below the threshold.

  8. Q: Can I use the TPS3802L30DCKR in an automotive application? A: Yes, the TPS3802L30DCKR is qualified for automotive applications and meets the AEC-Q100 standard.

  9. Q: What is the temperature range of the TPS3802L30DCKR? A: The TPS3802L30DCKR operates within a temperature range of -40°C to +125°C.

  10. Q: Does the TPS3802L30DCKR have any additional features? A: Yes, the TPS3802L30DCKR includes a manual reset input pin and a power-on reset delay feature to ensure proper system initialization.

Please note that these answers are based on general information about the TPS3802L30DCKR. For specific details and accurate information, it is recommended to refer to the datasheet or consult the manufacturer's documentation.