TPS3836J25DBVT

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisor

Characteristics: - Low Power Consumption - Wide Operating Voltage Range - Adjustable Reset Threshold - Manual Reset Input - Power-On Reset Delay Time: 200 ms (typical) - Open Drain Output - Small Package Size

Package: SOT-23-5

Essence: The TPS3836J25DBVT is a voltage supervisor IC designed to monitor the power supply voltage of electronic systems. It ensures proper system operation by generating a reset signal when the voltage falls below a certain threshold.

Packaging/Quantity: The TPS3836J25DBVT is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.8 V to 10 V
• Reset Threshold Voltage: Adjustable from 2.5 V to 5 V
• Quiescent Current: 3 µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Output Type: Open Drain
• Output Voltage: VDD - 0.4 V (max)
• Power-On Reset Delay Time: 200 ms (typical)

Pin Configuration

The TPS3836J25DBVT has a SOT-23-5 package with the following pin configuration:

____ VDD| | GND| | RESET| | GND| | OUT|____|

Functional Features

1. Voltage Monitoring: The TPS3836J25DBVT continuously monitors the supply voltage and generates a reset signal when it falls below the user-adjustable threshold.
2. Adjustable Reset Threshold: The reset threshold voltage can be set between 2.5 V and 5 V, allowing flexibility in different system requirements.
3. Manual Reset Input: The IC provides a manual reset input pin that allows an external signal to force a system reset.
4. Power-On Reset Delay: The power-on reset delay time of 200 ms ensures stable power supply before the system starts operation.
5. Open Drain Output: The open drain output allows easy interfacing with other devices.

Advantages

• Low power consumption makes it suitable for battery-powered applications.
• Wide operating voltage range enables compatibility with various power supply systems.
• Adjustable reset threshold provides flexibility in different voltage monitoring scenarios.
• Small package size (SOT-23-5) saves board space and simplifies integration into compact designs.

Disadvantages

• Lack of built-in hysteresis may result in potential oscillations near the threshold voltage.
• Limited number of pins restricts additional functionalities without external circuitry.

Working Principles

The TPS3836J25DBVT operates by comparing the supply voltage (VDD) with the user-adjustable threshold voltage. When VDD falls below the threshold, the internal comparator triggers a reset signal, which remains active until VDD rises above the threshold or a manual reset signal is applied. The open drain output allows the reset signal to be connected to other devices.

Application Field Plans

The TPS3836J25DBVT is commonly used in various electronic systems where reliable voltage monitoring is critical. Some application areas include:

1. Microcontrollers: Ensuring proper operation by monitoring the power supply voltage.
2. Battery-Powered Devices: Preventing damage due to low battery voltage.
3. Industrial Control Systems: Monitoring power supply integrity in critical control circuits.
4. Automotive Electronics: Protecting sensitive components from voltage fluctuations.
5. Telecommunications Equipment: Ensuring stable operation by monitoring power supply voltage.

Alternative Models

1. TPS3836K33DBVT: Similar to TPS3836J25DBVT, but with a fixed reset threshold of 3.3 V.
2. TPS3836H30DBVT: Similar to TPS3836J25DBVT, but with a fixed reset threshold of 3.0 V.
3. TPS3836L30DBVT: Similar to TPS3836J25DBVT, but with a fixed reset threshold of 3.0 V and lower quiescent current.

These alternative models provide options for different voltage monitoring requirements while maintaining similar characteristics and package size.

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