LP3470M5-4.00

Overview

Product Category

The LP3470M5-4.00 belongs to the category of voltage regulators.

Use

This product is primarily used for regulating and stabilizing voltage levels in electronic circuits.

Characteristics

• Voltage regulation: The LP3470M5-4.00 provides a stable output voltage, ensuring consistent performance of connected devices.
• Low power consumption: This voltage regulator operates with minimal power consumption, making it suitable for energy-efficient applications.
• Small package size: The LP3470M5-4.00 comes in a compact package, allowing for easy integration into various electronic systems.
• High accuracy: It offers precise voltage regulation, ensuring reliable operation of sensitive components.

Package and Quantity

The LP3470M5-4.00 is available in a small surface-mount package (M5) and is typically sold in reels or tubes containing multiple units.

Specifications

• Input voltage range: 2.5V - 6.5V
• Output voltage: 4.00V
• Output current: Up to 50mA
• Dropout voltage: 150mV at 50mA load
• Quiescent current: 1µA (typical)
• Operating temperature range: -40°C to +125°C

Pin Configuration

The LP3470M5-4.00 has the following pin configuration:

```

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| | --| VIN GND |-- Pin 1: Ground --| VOUT EN |-- Pin 2: Enable |___________| ```

Functional Features

Undervoltage Lockout (UVLO)

The LP3470M5-4.00 incorporates an undervoltage lockout feature that disables the output when the input voltage falls below a certain threshold. This protects connected devices from operating at insufficient voltage levels.

Thermal Shutdown Protection

To prevent overheating and potential damage, the LP3470M5-4.00 includes a thermal shutdown mechanism that disables the regulator when the temperature exceeds a safe limit.

Enable Pin Control

The enable pin allows for easy on/off control of the regulator, enabling power-saving functionality in applications where the regulator is not required to be active at all times.

Advantages and Disadvantages

Advantages

• High accuracy and stability in voltage regulation.
• Low power consumption, suitable for energy-efficient designs.
• Compact package size facilitates integration into various electronic systems.
• Undervoltage lockout and thermal shutdown protection enhance device safety.

Disadvantages

• Limited output current capacity (up to 50mA).
• Input voltage range may not be suitable for all applications requiring voltage regulation.

Working Principles

The LP3470M5-4.00 operates as a linear voltage regulator. It utilizes a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage. The regulator continuously monitors the input voltage and adjusts its internal components to compensate for any fluctuations, ensuring a consistent output voltage.

Application Field Plans

The LP3470M5-4.00 finds application in various electronic systems that require precise voltage regulation. Some potential application fields include:

1. Battery-powered devices: The LP3470M5-4.00 can be used to regulate voltage in portable electronics such as smartphones, tablets, and wearables.
2. IoT devices: It is suitable for powering sensors, microcontrollers, and communication modules in Internet of Things (IoT) applications.
3. Automotive electronics: The regulator can be employed in automotive systems to stabilize voltage levels for various components, including infotainment systems, lighting, and sensors.
4. Industrial automation: It can be utilized in industrial control systems, PLCs (Programmable Logic Controllers), and motor control circuits to ensure stable voltage supply.

Alternative Models

1. LP3470M5-3.30: A variant of the LP3470 series with an output voltage of 3.30V.
2. LP3470M5-5.00: Another variant with an output voltage of 5.00V.
3. LP3470M5-ADJ: This model allows for adjustable output voltage within a specified range.

These alternative models offer similar functionality but cater to different voltage requirements.

In conclusion, the LP3470M5-4.00 is a voltage regulator that provides stable voltage regulation, low power consumption, and compact packaging. It offers advantages such as high accuracy, undervoltage lockout, thermal shutdown protection, and enable pin control. While it has limitations in terms of output current capacity and input voltage range, it finds applications in battery-powered devices, IoT, automotive electronics, and industrial automation. Alternative models with different output voltages are also available.