LX1991ILQ

Product Overview

Category: Integrated Circuit (IC)

Use: LX1991ILQ is a high-performance voltage regulator designed for use in various electronic devices. It provides stable and regulated power supply to ensure proper functioning of the connected components.

Characteristics: - High precision voltage regulation - Low dropout voltage - Wide input voltage range - Thermal shutdown protection - Current limit protection

Package: LX1991ILQ is available in a compact quad flat package (ILQ) which ensures easy integration into circuit boards.

Essence: The essence of LX1991ILQ lies in its ability to regulate voltage with high precision, ensuring reliable and efficient operation of electronic devices.

Packaging/Quantity: Each package of LX1991ILQ contains one unit of the IC.

Specifications

• Input Voltage Range: 2.5V - 16V
• Output Voltage Range: 1.2V - 12V
• Dropout Voltage: 0.3V at 500mA
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

LX1991ILQ features a total of six pins arranged as follows:

1. VIN (Input Voltage)
2. GND (Ground)
3. VOUT (Output Voltage)
4. BYP (Bypass Capacitor)
5. EN (Enable)
6. NC (No Connection)

Functional Features

• High Precision Regulation: LX1991ILQ ensures precise voltage regulation, minimizing fluctuations and providing stable power supply to connected components.
• Low Dropout Voltage: With a low dropout voltage of only 0.3V, LX1991ILQ can maintain a stable output even when the input voltage is close to the desired output voltage.
• Wide Input Voltage Range: The IC can operate within a wide input voltage range of 2.5V to 16V, making it suitable for various applications.
• Thermal Shutdown Protection: LX1991ILQ incorporates thermal shutdown protection, which prevents the IC from overheating and ensures its longevity.
• Current Limit Protection: The IC features current limit protection, safeguarding against excessive current flow and potential damage to connected devices.

Advantages and Disadvantages

Advantages: - High precision voltage regulation - Low dropout voltage - Wide input voltage range - Thermal shutdown and current limit protection ensure device safety - Compact package for easy integration

Disadvantages: - Limited output voltage range (1.2V - 12V) - Higher quiescent current compared to some alternative models

Working Principles

LX1991ILQ operates based on a feedback control mechanism. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output. By continuously monitoring and regulating the voltage, the IC ensures that the connected components receive the required power supply.

Detailed Application Field Plans

LX1991ILQ finds applications in various electronic devices, including but not limited to: - Mobile phones - Tablets - Portable media players - Digital cameras - Wireless communication devices

The IC is particularly useful in battery-powered devices where stable voltage regulation is crucial for optimal performance.

Detailed and Complete Alternative Models

1. LX1992ILQ: Similar to LX1991ILQ, but with an extended output voltage range of 0.8V - 15V.
2. LX1993ILQ: Offers additional features such as adjustable output voltage and overcurrent protection.
3. LX1994ILQ: Designed for low-power applications, providing high efficiency and ultra-low quiescent current.

These alternative models cater to specific requirements and offer flexibility in voltage regulation for different applications.

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