NCP303LSN44T1

Product Overview

Category

The NCP303LSN44T1 belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and supervising voltage levels in electronic circuits.

Characteristics

• Low quiescent current consumption
• Wide operating voltage range
• Adjustable threshold voltage
• Built-in hysteresis for noise immunity
• Small package size
• RoHS compliant

Package

The NCP303LSN44T1 is available in a small SOT-23-5 package.

Essence

The essence of the NCP303LSN44T1 lies in its ability to accurately monitor voltage levels and provide reliable supervision in various electronic applications.

Packaging/Quantity

The product is typically packaged in reels, with each reel containing a specific quantity of NCP303LSN44T1 devices. The exact quantity per reel may vary depending on the manufacturer's specifications.

Specifications

• Supply Voltage Range: 0.7V to 10V
• Threshold Voltage Range: 0.4V to 9.6V (adjustable)
• Quiescent Current: 3µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The NCP303LSN44T1 features a standard SOT-23-5 pin configuration:

```

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| | --| VDD|-- Pin 1: Supply Voltage --| GND|-- Pin 2: Ground --| RST|-- Pin 3: Reset Output --| THR|-- Pin 4: Threshold Input |____| ```

Functional Features

• Undervoltage detection and reset generation
• Adjustable threshold voltage for precise monitoring
• Hysteresis for improved noise immunity
• Open-drain reset output for compatibility with various microcontrollers and logic circuits
• Low quiescent current consumption for power-sensitive applications

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring
• Wide operating voltage range
• Adjustable threshold voltage for flexibility
• Low power consumption
• Small package size for space-constrained designs

Disadvantages

• Limited to voltage supervision applications
• Requires an external resistor for threshold adjustment

Working Principles

The NCP303LSN44T1 operates by comparing the input voltage at the THR pin with the internally set threshold voltage. When the input voltage falls below the threshold, the reset output (RST) is asserted, indicating an undervoltage condition. The reset output remains active until the input voltage rises above the threshold voltage plus hysteresis.

Detailed Application Field Plans

The NCP303LSN44T1 finds application in various fields, including but not limited to: - Power supply monitoring - Battery-powered devices - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

• NCP302LSN30T1: Similar functionality with a fixed threshold voltage of 3.0V
• NCP301LSN09T1: Fixed threshold voltage of 0.9V, suitable for low-voltage applications
• NCP304LSN50T1: Higher threshold voltage of 5.0V for specific voltage level monitoring requirements

These alternative models provide similar voltage supervision capabilities but with different threshold voltage options to cater to diverse application needs.

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