LM3502SQ-35

Product Overview

Category

The LM3502SQ-35 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
• Thermal shutdown protection
• Current limit protection

Package

The LM3502SQ-35 comes in a small outline package (SOP) with 8 pins.

Essence

The essence of the LM3502SQ-35 is its ability to provide stable and regulated voltage output, ensuring reliable operation of electronic devices.

Packaging/Quantity

The LM3502SQ-35 is typically packaged in reels or tubes and is available in various quantities depending on the supplier.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 3.5V
• Dropout Voltage: 200mV at 100mA
• Maximum Output Current: 150mA
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM3502SQ-35 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 LM3502SQ-35 provides accurate and stable voltage regulation, ensuring consistent 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 LM3502SQ-35 can accept a wide range of input voltages, making it suitable for various applications.
• Thermal Shutdown Protection: The regulator incorporates thermal shutdown protection to prevent damage due to excessive heat.
• Current Limit Protection: It also features current limit protection, safeguarding the circuit from overcurrent conditions.

Advantages and Disadvantages

Advantages

• High precision voltage regulation ensures reliable performance.
• Low dropout voltage allows for efficient power conversion.
• Wide input voltage range provides flexibility in different applications.
• Thermal shutdown and current limit protection enhance safety and durability.

Disadvantages

• Limited maximum output current may restrict usage in high-power applications.
• Requires external components for proper operation.

Working Principles

The LM3502SQ-35 is a linear voltage regulator that uses a feedback mechanism to maintain a constant output voltage. It compares the output voltage with a reference voltage and adjusts the internal circuitry to achieve the desired output. By regulating the voltage, it ensures that connected devices receive a stable and consistent power supply.

Detailed Application Field Plans

The LM3502SQ-35 finds applications in various fields, including:

1. Portable Electronics: It can be used in battery-powered devices such as smartphones, tablets, and portable media players to regulate voltage and ensure stable operation.
2. Automotive Electronics: The regulator can be employed in automotive systems to provide regulated voltage for sensors, control modules, and other electronic components.
3. Industrial Control Systems: It is suitable for use in industrial control systems where precise voltage regulation is required for reliable operation of machinery and equipment.
4. Communication Systems: The LM3502SQ-35 can be utilized in communication systems to regulate voltage for transceivers, amplifiers, and other components.

Detailed and Complete Alternative Models

1. LM317: A popular linear voltage regulator with adjustable output voltage and higher maximum output current.
2. LM1117: Another widely used regulator with fixed output voltage options and low dropout voltage.
3. LT1763: A high-performance regulator with low quiescent current and excellent line regulation.

These alternative models offer similar functionality to the LM3502SQ-35 and can be considered based on specific requirements and application needs.

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