DS1236S-5N+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The DS1236S-5N+ is a voltage supervisor IC primarily used for monitoring and controlling power supply voltages in electronic systems. It ensures proper system operation by providing reset signals during power-up, power-down, and brownout conditions.

Characteristics: - Voltage Range: 2.7V to 5.5V - Reset Threshold Accuracy: ±5% - Low Quiescent Current: 10µA (typical) - Power-On Reset Delay: 100ms (typical) - Active-Low Reset Output - Small Package Size: SOT-23-5 - RoHS Compliant

Package: The DS1236S-5N+ is available in a compact SOT-23-5 package, which consists of five pins arranged in a surface-mount configuration.

Essence: This IC acts as a reliable watchdog for electronic systems, ensuring stable operation by monitoring the power supply voltage and generating reset signals when necessary.

Packaging/Quantity: The DS1236S-5N+ is typically sold in reels or tubes containing a specified quantity of ICs, usually ranging from a few hundred to several thousand units per package.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Reset Threshold Voltage: Adjustable from 1.2V to VCC-0.6V
• Reset Timeout Period: Adjustable from 140ms to 1120ms
• Operating Temperature Range: -40°C to +85°C
• Input Current: 20µA (maximum)
• Output Current: 10mA (maximum)

Pin Configuration

The DS1236S-5N+ features the following pin configuration:

____ VCC | | -----| |----- GND | | -----| |----- RST |____|

• Pin 1 (VCC): Power supply input pin.
• Pin 2 (GND): Ground reference pin.
• Pin 3 (RST): Active-low reset output pin.

Functional Features

1. Power-On Reset: The DS1236S-5N+ generates a reset signal when the power supply voltage rises above the reset threshold, ensuring a controlled system startup.

2. Brownout Detection: It monitors the power supply voltage during operation and asserts the reset signal if the voltage drops below the specified threshold, preventing erratic behavior or data corruption.

3. Reset Timeout: The IC provides an adjustable reset timeout period, allowing customization based on system requirements.

4. Low Quiescent Current: With a typical quiescent current of only 10µA, the DS1236S-5N+ minimizes power consumption in battery-powered applications.

Advantages and Disadvantages

Advantages: - Wide operating voltage range allows compatibility with various systems. - Adjustable reset threshold and timeout provide flexibility for different applications. - Small package size enables space-saving designs. - Low quiescent current reduces power consumption.

Disadvantages: - Lack of built-in hysteresis may result in potential noise-related false triggering. - Limited number of pins restricts additional functionality without external circuitry.

Working Principles

The DS1236S-5N+ operates by continuously monitoring the power supply voltage using an internal voltage comparator. When the voltage exceeds the set threshold, the reset output remains inactive. However, if the voltage falls below the threshold or during power-up, the reset output is asserted, initiating a system reset. The reset signal remains active until the voltage stabilizes or the timeout period elapses.

Detailed Application Field Plans

The DS1236S-5N+ finds applications in various electronic systems where reliable power supply monitoring and reset generation are critical. Some potential application fields include:

1. Microcontrollers: Ensures proper initialization and stable operation of microcontroller-based systems.
2. Embedded Systems: Provides a safeguard against power supply fluctuations, preventing data corruption or system crashes.
3. Industrial Control Systems: Monitors voltage levels in control circuits, ensuring uninterrupted operation and preventing damage to equipment.
4. Automotive Electronics: Protects sensitive automotive electronics from voltage variations, enhancing overall system reliability.

Detailed and Complete Alternative Models

1. MAX1236ESA+: Similar functionality with adjustable reset threshold and timeout. Available in an SOIC-8 package.
2. ADM1232ARMZ-REEL7: Voltage supervisor IC with adjustable reset threshold and timeout. Packaged in a MSOP-8 form factor.
3. TPS3809K33DBVR: Ultra-low-power voltage supervisor with fixed reset threshold and adjustable timeout. Comes in a SOT-23-5 package.

These alternative models offer