LP3470IM5X-4.8

Product Overview

Category

LP3470IM5X-4.8 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used as a voltage supervisor or reset circuit in various electronic devices.

Characteristics

• Low-power consumption
• Wide operating voltage range
• Small package size (M5)
• High accuracy
• Adjustable reset threshold voltage

Package

LP3470IM5X-4.8 is available in a small SOT-23-5 package.

Essence

The essence of LP3470IM5X-4.8 lies in its ability to monitor and control the power supply voltage, ensuring proper functioning of the connected electronic device.

Packaging/Quantity

LP3470IM5X-4.8 is typically packaged in reels containing 3000 units.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage: Adjustable from 1.2V to 4.6V
• Quiescent Current: 3µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

LP3470IM5X-4.8 has five pins arranged as follows:

```

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| | --| VDD | --| GND | --| MR | --| RESET | --| NC | |_______| ```

Pin Description: - VDD: Power supply input - GND: Ground reference - MR: Manual reset input (active-low) - RESET: Reset output - NC: No connection (unused pin)

Functional Features

1. Voltage Monitoring: LP3470IM5X-4.8 continuously monitors the supply voltage and generates a reset signal when the voltage falls below the programmed threshold.
2. Adjustable Threshold: The reset threshold voltage can be adjusted using an external resistor divider network, allowing customization for different applications.
3. Manual Reset: The manual reset input (MR) allows for a forced reset by pulling it low.
4. Power-On Reset Delay: LP3470IM5X-4.8 includes a built-in power-on reset delay to ensure stable operation during power-up.

Advantages and Disadvantages

Advantages

• Low-power consumption extends battery life in portable devices.
• Wide operating voltage range makes it compatible with various power supply systems.
• Small package size enables space-saving designs.
• Adjustable reset threshold voltage provides flexibility for different voltage requirements.

Disadvantages

• Limited number of pins may restrict the functionality in complex systems.
• Lack of built-in hysteresis may result in potential noise-related issues.

Working Principles

LP3470IM5X-4.8 operates based on a voltage comparator circuit. It compares the supply voltage with the programmed threshold voltage. When the supply voltage drops below the threshold, the reset output is activated, indicating a power failure or unstable voltage condition. The reset output remains active until the supply voltage rises above the threshold or a manual reset signal is applied.

Detailed Application Field Plans

LP3470IM5X-4.8 finds applications in various electronic devices where reliable voltage monitoring and reset functionality are crucial. Some common application fields include:

1. Microcontrollers and Microprocessors: LP3470IM5X-4.8 ensures proper reset and initialization of these devices during power-up or voltage fluctuations.
2. Communication Systems: It provides voltage supervision in communication modules, ensuring stable operation and preventing data corruption.
3. Industrial Control Systems: LP3470IM5X-4.8 helps maintain system integrity by monitoring power supply voltages in industrial control equipment.
4. Automotive Electronics: It plays a vital role in automotive applications, ensuring proper functioning of critical systems such as engine control units and safety modules.

Detailed and Complete Alternative Models

1. LP3470IM5X-3.3: Similar to LP3470IM5X-4.8 but with a fixed reset threshold voltage of 3.3V.
2. LP3470IM5X-2.5: Another variant with a fixed reset threshold voltage of 2.5V.
3. LP3470IM5X-ADJ: Adjustable version with a wider range of reset threshold voltage options.

These alternative models provide similar functionality but cater to different voltage requirements in various applications.

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