LP3470IM5X-4.38

Basic Information Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low Dropout Voltage - Low Quiescent Current - Adjustable Output Voltage - Overcurrent and Thermal Protection - Small Package Size (SOT-23-5) - RoHS Compliant

Package: SOT-23-5

Essence: The LP3470IM5X-4.38 is a voltage regulator IC designed to provide a stable output voltage for various electronic devices.

Packaging/Quantity: The LP3470IM5X-4.38 is typically sold in reels containing 3000 units.

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 150mV at 100mA
• Quiescent Current: 20µA (typical)
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LP3470IM5X-4.38 has the following pin configuration:

```

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| | --| VDD|-- Pin 1: Power Supply Input --| GND|-- Pin 2: Ground --| EN |-- Pin 3: Enable Input --| FB |-- Pin 4: Feedback Input --| VOUT|-- Pin 5: Output Voltage |____| ```

Functional Features

• Low Dropout Voltage: The LP3470IM5X-4.38 exhibits a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: The IC has a low quiescent current, minimizing power consumption when the load is light.
• Adjustable Output Voltage: The output voltage can be adjusted within a specified range using external resistors.
• Overcurrent and Thermal Protection: The LP3470IM5X-4.38 incorporates protection features to prevent damage from excessive current or high temperatures.
• Small Package Size: The SOT-23-5 package offers a compact form factor, making it suitable for space-constrained applications.
• RoHS Compliant: The IC is compliant with the Restriction of Hazardous Substances (RoHS) directive, ensuring it meets environmental standards.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures stable output even with varying input voltage. - Low quiescent current minimizes power consumption. - Adjustable output voltage provides flexibility for different applications. - Overcurrent and thermal protection safeguards the IC and connected devices. - Small package size allows for easy integration into compact designs. - RoHS compliance demonstrates environmental responsibility.

Disadvantages: - Limited output current capability may not be suitable for high-power applications. - Requires external components (resistors) for output voltage adjustment.

Working Principles

The LP3470IM5X-4.38 operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop across its internal pass transistor. When the input voltage exceeds the desired output voltage, the pass transistor adjusts its resistance to maintain a stable output. The enable input (EN) allows the regulator to be turned on or off, conserving power when not needed. The feedback input (FB) monitors the output voltage and adjusts the pass transistor accordingly.

Detailed Application Field Plans

The LP3470IM5X-4.38 is commonly used in various electronic devices that require a stable and regulated power supply. Some typical application fields include:

1. Battery-Powered Devices: Portable electronic devices, such as smartphones, tablets, and wearable devices, benefit from the LP3470IM5X-4.38's low dropout voltage and low quiescent current, extending battery life.

2. Embedded Systems: Microcontrollers, sensors, and other embedded systems often require a stable power source. The LP3470IM5X-4.38 provides reliable voltage regulation in these applications.

3. Consumer Electronics: Audio/video equipment, gaming consoles, and home appliances can utilize the LP3470IM5X-4.38 to ensure consistent power supply for optimal performance.

4. Automotive Electronics: The IC's wide operating temperature range makes it suitable for automotive applications, including infotainment systems, dashboard displays, and lighting control modules.

Detailed and Complete Alternative Models

1. LM1117-ADJ: Adjustable Voltage Regulator, SOT-223 package.
2. LT1763CS8-3.3: Low Dropout Regulator, SO-8 package.
3. **TS2950CT-3.3