LM3420M5-16.8/NOPB

Product Overview

Category

The LM3420M5-16.8/NOPB belongs to the category of integrated circuits (ICs) and specifically falls under the voltage regulators - switching regulators classification.

Use

This product is primarily used as a step-down (buck) voltage regulator. It efficiently converts higher input voltages into lower output voltages, making it suitable for various electronic applications.

Characteristics

• Input Voltage Range: 4.5V to 30V
• Output Voltage: 16.8V
• Output Current: Up to 1A
• Switching Frequency: 500kHz (typical)
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOT-23-5
• RoHS Compliant: Yes

Package and Quantity

The LM3420M5-16.8/NOPB is packaged in a small-outline transistor (SOT) package with five pins (SOT-23-5). It is available in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Input Voltage Range: 4.5V to 30V
• Output Voltage: 16.8V
• Output Current: Up to 1A
• Switching Frequency: 500kHz (typical)
• Quiescent Current: 100µA (typical)
• Shutdown Current: 0.1µA (typical)
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.5% (typical)
• Ripple Rejection: 70dB (typical)
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOT-23-5

Pin Configuration

The LM3420M5-16.8/NOPB has five pins arranged as follows:

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

Functional Features

• Wide Input Voltage Range: The LM3420M5-16.8/NOPB can accept input voltages ranging from 4.5V to 30V, making it suitable for a wide range of applications.
• High Efficiency: With an efficiency of up to 95%, this voltage regulator minimizes power losses and maximizes energy conversion.
• Fast Transient Response: The LM3420M5-16.8/NOPB provides a fast transient response, ensuring stable output voltage even during sudden load changes.
• Protection Features: It incorporates various protection features such as thermal shutdown, overcurrent protection, and reverse polarity protection, enhancing the reliability of the system.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• High efficiency reduces power dissipation and extends battery life.
• Compact SOT-23-5 package enables space-saving designs.
• Fast transient response ensures stability in dynamic load conditions.
• Built-in protection features enhance system reliability.

Disadvantages

• Limited output current capability of up to 1A may not be sufficient for high-power applications.
• Requires external components for proper operation, increasing overall system complexity.

Working Principles

The LM3420M5-16.8/NOPB operates as a step-down voltage regulator using a pulse-width modulation (PWM) control scheme. It utilizes an internal power MOSFET to switch the input voltage at a high frequency, which is then filtered and regulated to provide the desired output voltage.

The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the internal switch to maintain a stable output. The enable pin (EN) allows for easy on/off control of the regulator.

Detailed Application Field Plans

The LM3420M5-16.8/NOPB can be used in various applications, including but not limited to: - Battery-powered devices - Portable electronic equipment - Automotive electronics - Industrial control systems - LED lighting applications

Alternative Models

For those seeking alternative models with similar specifications and functionality, the following options are available: - LM2576-ADJ - LM2596S-ADJ - LM317T - LT1084CP-12

These alternatives offer comparable performance and can be considered based on specific application requirements.

In conclusion, the LM3420M5-16.8/NOPB is a versatile step-down voltage regulator that offers a wide input voltage