TPS3813K33DBVRG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Supervisor with Programmable Delay Time - Precision Voltage Monitor - Watchdog Timer for Microcontrollers - Manual Reset Input - Power-On Reset Generator with Fixed Delay Time of 200 ms - Open-Drain Output - Active-Low Reset Output - Supply Voltage Range: 1.6 V to 6.5 V - Operating Temperature Range: -40°C to +125°C - Package Type: SOT-23 (DBV) - Mounting Style: Surface Mount - Packaging: Tape and Reel - Quantity per Reel: 3000

Specifications

The TPS3813K33DBVRG4 is a low-power voltage supervisor IC designed for monitoring the power supply voltage in various applications. It provides a precision voltage monitor, a watchdog timer for microcontrollers, and a manual reset input. The device operates over a wide supply voltage range of 1.6 V to 6.5 V and can withstand temperatures ranging from -40°C to +125°C.

Pin Configuration

The TPS3813K33DBVRG4 has the following pin configuration:

1. GND (Ground)
2. MR (Manual Reset)
3. RESET (Active-Low Reset Output)
4. VDD (Supply Voltage)

Functional Features

1. Voltage Monitoring: The TPS3813K33DBVRG4 monitors the power supply voltage and generates a reset signal when the voltage falls below a certain threshold.
2. Watchdog Timer: It includes a watchdog timer that can be used to monitor the operation of microcontrollers. If the microcontroller fails to toggle a specific signal within a programmable time period, the TPS3813K33DBVRG4 will generate a reset signal.
3. Manual Reset Input: The device features a manual reset input that allows an external signal to force a system reset.
4. Power-On Reset Generator: It includes a power-on reset generator with a fixed delay time of 200 ms, ensuring proper initialization of the system during power-up.
5. Open-Drain Output: The reset output is an open-drain configuration, allowing for flexibility in connecting multiple devices.
6. Wide Operating Range: The TPS3813K33DBVRG4 operates over a wide supply voltage range, making it suitable for various applications.
7. Temperature Range: It can withstand a wide temperature range, enabling its use in harsh environments.

Advantages and Disadvantages

Advantages: - Low power consumption - Wide operating voltage range - Precise voltage monitoring - Watchdog timer for microcontroller reliability - Manual reset capability - Power-on reset generator for proper system initialization - Open-drain reset output for flexible connections

Disadvantages: - Limited quantity per reel (3000)

Working Principles

The TPS3813K33DBVRG4 works by continuously monitoring the power supply voltage. When the voltage falls below a programmable threshold, the device generates a reset signal. This ensures that the system remains in a safe state when the power supply voltage is insufficient. Additionally, the watchdog timer feature monitors the operation of microcontrollers by checking for specific signals within a programmable time period. If the microcontroller fails to toggle the signal, the TPS3813K33DBVRG4 generates a reset signal to prevent system malfunction.

Application Field Plans

The TPS3813K33DBVRG4 is commonly used in various applications where voltage supervision is critical. Some potential application fields include: - Battery-powered devices - Embedded systems - Industrial automation - Automotive electronics - Medical equipment - Consumer electronics

Alternative Models

1. TPS3813K33DBVR: Similar to TPS3813K33DBVRG4, but without the tape and reel packaging.
2. TPS3813K33DBVT: SOT-23 package with a different pin configuration.
3. TPS3813K33DCKR: SC-70 package with a different pin configuration.

These alternative models offer similar functionality and characteristics, providing flexibility in choosing the most suitable option for specific applications.

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