LM3590MFX/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High efficiency, low dropout voltage, adjustable output voltage, thermal shutdown protection
• Package: SOT-23-5
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.2V to 5.5V
• Output Current: Up to 150mA
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 45µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3590MFX/NOPB has a total of 5 pins:

1. GND: Ground pin
2. EN: Enable pin (active high)
3. FB: Feedback pin for adjusting the output voltage
4. VIN: Input voltage pin
5. VOUT: Output voltage pin

Functional Features

• High Efficiency: The LM3590MFX/NOPB offers high efficiency, ensuring minimal power loss during voltage regulation.
• Low Dropout Voltage: With a low dropout voltage of 200mV at 100mA, the IC can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The feedback pin allows users to adjust the output voltage within the specified range according to their requirements.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Low dropout voltage ensures stable output even with low input voltages. - Adjustable output voltage provides flexibility in various applications. - Thermal shutdown protection prevents overheating and damage.

Disadvantages: - Limited output current of up to 150mA may not be suitable for high-power applications. - SOT-23-5 package may require additional space on the PCB compared to smaller packages.

Working Principles

The LM3590MFX/NOPB is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the feedback voltage (FB pin) with an internal reference voltage. The error amplifier adjusts the pass transistor to maintain a constant output voltage, compensating for changes in the input voltage and load conditions.

Detailed Application Field Plans

The LM3590MFX/NOPB can be used in various applications, including but not limited to:

1. Battery-powered devices: Provides stable voltage regulation for portable electronics such as smartphones, tablets, and wearable devices.
2. IoT devices: Suitable for powering sensors, microcontrollers, and communication modules in Internet of Things (IoT) applications.
3. Automotive electronics: Can be used in automotive systems for voltage regulation in infotainment systems, lighting controls, and other electronic components.
4. Industrial equipment: Enables precise voltage regulation in industrial automation, control systems, and instrumentation.

Detailed and Complete Alternative Models

1. LM317: A popular linear voltage regulator with adjustable output voltage and higher output current capability.
2. LM1117: Another widely used linear voltage regulator with fixed output voltage options and higher output current capacity.
3. LT1763: A low dropout voltage regulator with adjustable output voltage and excellent line and load regulation characteristics.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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