LM3503ITLX-44/NOPB

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Regulator

Characteristics: - Input Voltage Range: 2.7V to 5.5V - Output Voltage Range: 0.6V to 4.5V - Maximum Output Current: 1A - Dropout Voltage: 200mV at 1A - Quiescent Current: 45µA - Operating Temperature Range: -40°C to +125°C - Package Type: SOT-23-5 - Packaging Quantity: 3000 units per reel

Specifications

The LM3503ITLX-44/NOPB is a voltage regulator IC designed for use in various electronic devices. It operates within an input voltage range of 2.7V to 5.5V and provides a regulated output voltage ranging from 0.6V to 4.5V. The maximum output current supported by this IC is 1A, with a dropout voltage of 200mV at 1A. The quiescent current is low, measuring only 45µA.

Pin Configuration

The LM3503ITLX-44/NOPB features a SOT-23-5 package with the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. FB (Feedback)
4. EN (Enable)
5. VOUT (Output Voltage)

Functional Features

• Wide Input Voltage Range: The LM3503ITLX-44/NOPB can accept input voltages ranging from 2.7V to 5.5V, making it suitable for a wide range of applications.
• Low Dropout Voltage: With a dropout voltage of only 200mV at 1A, this voltage regulator minimizes power dissipation and improves efficiency.
• Low Quiescent Current: The quiescent current of 45µA ensures minimal power consumption when the device is in standby or idle mode.
• Enable Pin Control: The EN pin allows for easy on/off control of the voltage regulator, enabling power-saving features in the system.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications. - Low dropout voltage enhances overall efficiency. - Low quiescent current minimizes power consumption. - Enable pin control provides flexibility in power management.

Disadvantages: - Limited maximum output current of 1A may not be suitable for high-power applications. - SOT-23-5 package may require additional thermal considerations for heat dissipation.

Working Principles

The LM3503ITLX-44/NOPB operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB) with a reference voltage. Any difference between the two voltages is amplified and used to adjust the pass transistor, ensuring a stable output voltage.

Detailed Application Field Plans

The LM3503ITLX-44/NOPB can be used in various applications, including but not limited to: - Battery-powered devices - Portable electronic devices - IoT devices - Wearable devices - Embedded systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM3503ITLX-44/NOPB include: - LM317: Adjustable Voltage Regulator - LM1117: Low Dropout Voltage Regulator - LT1763: Ultra-Low Dropout Linear Regulator - TPS7A47: High-Voltage, Ultra-Low IQ, Low-Dropout Regulator

These alternative models provide different specifications and features, allowing designers to choose the most suitable option for their specific application requirements.

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