LM3420AM5X-8.4

Overview

Product Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High accuracy - Adjustable output voltage - Small package size - Low quiescent current

Package: SOT-23-5

Essence: The LM3420AM5X-8.4 is a voltage regulator IC designed to provide a stable and adjustable output voltage with low dropout voltage. It is commonly used in various electronic devices to regulate the voltage supplied to different components.

Packaging/Quantity: The LM3420AM5X-8.4 is typically sold in reels or tubes containing a specific quantity of ICs, such as 2500 units per reel.

Specifications

• Input Voltage Range: 2.5V to 10V
• Output Voltage Range: 1.25V to 8.4V
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 50µA
• Maximum Output Current: 500mA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3420AM5X-8.4 has a total of five pins arranged in the following configuration:

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Pin 1: Enable (EN) Pin 2: Feedback (FB) Pin 3: Ground (GND) Pin 4: Output (OUT) Pin 5: Input (IN)

Functional Features

1. Low Dropout Voltage: The LM3420AM5X-8.4 exhibits a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.

2. High Accuracy: This voltage regulator IC provides high accuracy in maintaining the desired output voltage, ensuring stable and reliable performance.

3. Adjustable Output Voltage: The LM3420AM5X-8.4 allows for adjustable output voltage within a specified range, providing flexibility in various applications.

4. Small Package Size: With its compact SOT-23-5 package, the LM3420AM5X-8.4 is suitable for space-constrained electronic devices.

5. Low Quiescent Current: The IC has a low quiescent current, minimizing power consumption when the load is light or inactive.

Advantages

• Stable and accurate voltage regulation
• Adjustable output voltage
• Low dropout voltage ensures efficient operation
• Small package size enables integration into compact designs
• Low quiescent current for reduced power consumption

Disadvantages

• Limited maximum output current (500mA)
• Input voltage range may not be suitable for all applications
• Requires external components for proper operation

Working Principles

The LM3420AM5X-8.4 operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB) with a reference voltage. When the output voltage deviates from the desired value, the internal circuitry adjusts the pass transistor to maintain the correct output voltage.

Detailed Application Field Plans

The LM3420AM5X-8.4 finds application in various electronic devices that require stable and adjustable voltage regulation. Some common application fields include:

1. Battery-powered devices: Used to regulate the voltage supplied to different components in portable electronics like smartphones, tablets, and digital cameras.

2. Automotive electronics: Provides voltage regulation for automotive systems such as infotainment systems, lighting modules, and sensors.

3. Industrial control systems: Ensures stable voltage supply for control circuits, motor drivers, and sensors in industrial automation applications.

4. Power management modules: Integrated into power management circuits to regulate voltage for different subsystems in computer systems, servers, and networking equipment.

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with a fixed output voltage of 3.3V and higher maximum output current (800mA).

2. LT1763-5: Adjustable output voltage regulator with low dropout voltage and higher maximum output current (1500mA).

3. MCP1702-5002E: Low quiescent current voltage regulator with fixed output voltage of 5V and lower maximum output current (250mA).

4. TPS79633: High-accuracy, low-dropout voltage regulator with fixed output voltage of 3.3V and higher maximum output current (1000mA).

These alternative models offer similar functionality to the LM3420AM5X-8.4 but may have different specifications and package options.

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