TPS3836L30DBVT

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Supervisor with Programmable Delay Time - Precision Voltage Monitor for 3.3-V Systems - Open-Drain Output - Manual Reset Input (MR) - Power-On Reset (POR) Signal Valid to VDD = 1.1 V - No External Components - Low Supply Current of 10 µA (Typ) - Operating Temperature Range: -40°C to +125°C - Small SOT-23 Package

Package: SOT-23 (DBV)

Essence: The TPS3836L30DBVT is a low-power voltage supervisor designed for monitoring the power supply voltage in microcontroller-based systems. It provides a reset signal whenever the supply voltage drops below a preset threshold.

Packaging/Quantity: The TPS3836L30DBVT is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.1 V to 5.5 V
• Threshold Voltage Options: 2.93 V
• Accuracy: ±1.5%
• Quiescent Current: 10 µA (Typ)
• Power-On Reset Delay Time: 200 ms (Typ)
• Manual Reset Input Threshold Voltage: 0.4 V (Typ)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The TPS3836L30DBVT has the following pin configuration:

```

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| | --| VDD GND |-- Ground --| MR RST |-- Manual Reset Input --| VOUT NC |-- Output Voltage |___________| ```

Functional Features

1. Voltage Monitoring: The TPS3836L30DBVT continuously monitors the supply voltage and provides a reset signal when it falls below the preset threshold.
2. Programmable Delay Time: The delay time for the reset signal can be programmed using external capacitors.
3. Open-Drain Output: The output pin is an open-drain configuration, allowing for easy interfacing with other devices.
4. Manual Reset Input: The device includes a manual reset input (MR) that allows for an external reset signal to override the internal monitoring circuit.

Advantages

• Low power consumption
• Small package size
• Wide operating temperature range
• No external components required
• Accurate voltage monitoring

Disadvantages

• Limited threshold voltage options
• Manual reset input threshold may not be suitable for all applications

Working Principles

The TPS3836L30DBVT operates by comparing the supply voltage with a preset threshold voltage. When the supply voltage drops below this threshold, the internal circuit triggers a reset signal. The delay time for the reset signal can be adjusted using external capacitors. The open-drain output allows for easy integration with other devices, while the manual reset input provides flexibility for external reset control.

Application Field Plans

The TPS3836L30DBVT is commonly used in microcontroller-based systems where reliable voltage monitoring is essential. Some application fields include:

1. Battery-powered devices
2. Industrial automation systems
3. Automotive electronics
4. Medical equipment
5. Consumer electronics

Alternative Models

1. TPS3837L30DBVT: Similar to TPS3836L30DBVT but with a different threshold voltage option.
2. TPS3838L30DBVT: Higher accuracy version of TPS3836L30DBVT with ±0.5% accuracy.
3. TPS3839L30DBVT: Lower quiescent current version of TPS3836L30DBVT with 5 µA (Typ) current consumption.

These alternative models provide options for different threshold voltages, accuracy requirements, and power consumption levels.

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