LM3501TL-21/NOPB

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Regulator

Characteristics: - Low Dropout Voltage - Adjustable Output Voltage - Current Limit Protection - Thermal Shutdown Protection

Package: SOT-23-5

Essence: The LM3501TL-21/NOPB is a voltage regulator IC that provides a stable output voltage with low dropout. It is commonly used in various electronic devices to regulate and control the voltage levels.

Packaging/Quantity: The LM3501TL-21/NOPB is available in a SOT-23-5 package, which is a small surface-mount package. It is typically sold in reels or tubes containing multiple units.

Specifications

The LM3501TL-21/NOPB has the following specifications:

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.2V to 3.6V
• Dropout Voltage: 200mV at 100mA
• Maximum Output Current: 150mA
• Quiescent Current: 45µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM3501TL-21/NOPB has a total of five pins arranged as follows:

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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

• Low Dropout Voltage: The LM3501TL-21/NOPB has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The output voltage can be adjusted within a specified range using external resistors.
• Current Limit Protection: The IC has built-in current limit protection to prevent excessive current flow and protect the circuit.
• Thermal Shutdown Protection: In case of overheating, the LM3501TL-21/NOPB automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation. - Adjustable output voltage provides flexibility in various applications. - Current limit and thermal shutdown protection enhance reliability.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - SOT-23-5 package may require surface-mount soldering expertise.

Working Principles

The LM3501TL-21/NOPB operates as a linear voltage regulator. It compares the feedback voltage (FB) with a reference voltage to control the output voltage. By adjusting the resistance connected to the FB pin, the output voltage can be set within the specified range. The IC regulates the output voltage by controlling the current flow between the input and output pins.

Detailed Application Field Plans

The LM3501TL-21/NOPB is widely used in various electronic devices and applications, including:

1. Battery-powered devices: It is commonly used in portable electronics such as smartphones, tablets, and wearable devices to regulate the battery voltage and ensure stable operation.
2. IoT devices: The IC finds application in Internet of Things (IoT) devices that require low power consumption and reliable voltage regulation.
3. Automotive electronics: It is used in automotive applications to regulate voltage levels for sensors, actuators, and other electronic components.
4. Industrial equipment: The LM3501TL-21/NOPB is suitable for industrial equipment that requires precise voltage regulation and low dropout characteristics.

Detailed and Complete Alternative Models

1. LM317: A popular linear voltage regulator IC with adjustable output voltage and high current capability.
2. LT1083: A high-current linear voltage regulator with low dropout voltage and adjustable output voltage.
3. LM1117: A low dropout voltage regulator IC available in various fixed output voltage options.

These alternative models offer similar functionality and can be considered as substitutes for the LM3501TL-21/NOPB depending on specific requirements.

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