LM3503SQ-35/NOPB

Product Overview

Category

The LM3503SQ-35/NOPB belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

• High precision voltage regulation
• Low dropout voltage
• Wide input voltage range
• Adjustable output voltage
• Current limiting and thermal shutdown protection

Package

The LM3503SQ-35/NOPB comes in a small outline package (SOP) with 8 pins.

Essence

The essence of LM3503SQ-35/NOPB lies in its ability to provide stable and regulated voltage output for various electronic applications.

Packaging/Quantity

The LM3503SQ-35/NOPB is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.2V to 3.3V
• Dropout Voltage: 200mV at 100mA
• Maximum Output Current: 150mA
• Quiescent Current: 40µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM3503SQ-35/NOPB has the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. EN (Enable)
4. FB (Feedback)
5. VOUT (Output Voltage)
6. NC (No Connection)
7. NC (No Connection)
8. VREF (Reference Voltage)

Functional Features

• High Precision Regulation: The LM3503SQ-35/NOPB provides accurate and stable voltage regulation, ensuring reliable performance of connected devices.
• Low Dropout Voltage: With a low dropout voltage, the regulator can maintain a stable output even when the input voltage is close to the desired output voltage.
• Wide Input Voltage Range: The LM3503SQ-35/NOPB can accept a wide range of input voltages, making it suitable for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted within a specified range, allowing flexibility in different circuit requirements.
• Current Limiting and Thermal Shutdown Protection: The regulator incorporates current limiting and thermal shutdown protection mechanisms to prevent damage due to excessive current or temperature.

Advantages and Disadvantages

Advantages

• High precision voltage regulation ensures reliable performance.
• Low dropout voltage allows for efficient power conversion.
• Wide input voltage range provides versatility in application.
• Adjustable output voltage accommodates different circuit requirements.
• Current limiting and thermal shutdown protection enhance safety and reliability.

Disadvantages

• Limited maximum output current may restrict usage in high-power applications.
• Quiescent current consumption may impact overall power efficiency.

Working Principles

The LM3503SQ-35/NOPB operates as a linear voltage regulator. It uses a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage. The regulator utilizes a pass transistor to control the voltage drop across it, ensuring the desired output voltage is maintained.

Detailed Application Field Plans

The LM3503SQ-35/NOPB finds applications in various electronic systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Embedded systems - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM3503SQ-35/NOPB include: - LM317: A popular adjustable voltage regulator with higher output current capability. - LT1084: A low dropout voltage regulator with adjustable output voltage. - TPS7A4700: An ultra-low noise, high PSRR voltage regulator suitable for sensitive applications.

These alternative models can be considered based on specific requirements and design constraints.

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