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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