LM3501TLX-21/NOPB

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Short-circuit current limit

Package: SOT-23-5

Essence: The LM3501TLX-21/NOPB is a voltage regulator IC that provides a regulated output voltage from an unregulated input voltage. It is designed to deliver high output current with low dropout voltage, making it suitable for various applications.

Packaging/Quantity: The LM3501TLX-21/NOPB is available in a SOT-23-5 package and is typically sold in reels of 3000 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.2V to 3.6V
• Dropout Voltage: 200mV at 100mA
• Output Current: Up to 500mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3501TLX-21/NOPB has the following pin configuration:

```

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| | --| |-- VIN (Input Voltage) --| |-- GND (Ground) --| |-- EN (Enable) --| |-- FB (Feedback) --|____|-- VOUT (Output Voltage) ```

Functional Features

1. Low Dropout Voltage: The LM3501TLX-21/NOPB 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 Output Current Capability: With a maximum output current of 500mA, the LM3501TLX-21/NOPB can power a wide range of devices and components.

3. Adjustable Output Voltage: The output voltage of the LM3501TLX-21/NOPB can be adjusted within the range of 1.2V to 3.6V, providing flexibility for different application requirements.

4. Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature by disabling the regulator temporarily.

5. Short-Circuit Current Limit: The LM3501TLX-21/NOPB includes short-circuit current limiting functionality to protect the device from excessive current flow during a short circuit condition.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High output current capability for powering various components - Adjustable output voltage provides flexibility - Thermal shutdown protection prevents damage from overheating - Short-circuit current limit protects against excessive current flow

Disadvantages: - Limited input voltage range (2.7V to 5.5V) - SOT-23-5 package may require additional space on the PCB

Working Principles

The LM3501TLX-21/NOPB operates as a linear voltage regulator. It takes an unregulated input voltage and regulates it to a stable output voltage using a pass transistor and feedback mechanism. The feedback pin (FB) monitors the output voltage and adjusts the pass transistor accordingly to maintain the desired output voltage. The enable pin (EN) controls the operation of the regulator, allowing it to be turned on or off as required.

Detailed Application Field Plans

The LM3501TLX-21/NOPB is suitable for a wide range of applications, including but not limited to: - Battery-powered devices - Portable electronics - IoT devices - Embedded systems - Consumer electronics

Detailed and Complete Alternative Models

1. LM317: Adjustable voltage regulator with higher input voltage range.
2. LM1117: Fixed voltage regulator with various output voltage options.
3. LT1084: High current adjustable voltage regulator with low dropout voltage.

These alternative models offer similar functionality to the LM3501TLX-21/NOPB and can be considered based on specific application requirements.

In conclusion, the LM3501TLX-21/NOPB is a versatile voltage regulator IC that provides efficient regulation, high output current capability, and adjustable output voltage. It offers thermal shutdown protection and short-circuit current limit for enhanced reliability. With its compact SOT-23-5 package, it is suitable for various applications in different industries.