LM2751SDX-B

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC for LED Backlighting

Characteristics: - High efficiency - Low quiescent current - Wide input voltage range - Adjustable output voltage - Overvoltage protection - Thermal shutdown protection

Package: SDX Package

Essence: The LM2751SDX-B is a power management IC specifically designed for LED backlighting applications. It provides efficient power conversion and control for driving LED backlights in various electronic devices.

Packaging/Quantity: The LM2751SDX-B is available in a standard SDX package. The quantity per package may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 4V to 24V
• Quiescent Current: 50µA (typical)
• Efficiency: Up to 90%
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM2751SDX-B has the following pin configuration:

1. VIN: Input voltage
2. EN: Enable pin
3. FB: Feedback pin
4. GND: Ground
5. VOUT: Output voltage
6. LX: Inductor connection

Functional Features

• High Efficiency: The LM2751SDX-B offers high efficiency power conversion, minimizing energy loss during LED backlight operation.
• Low Quiescent Current: With a low quiescent current of only 50µA, the LM2751SDX-B helps conserve power when the backlight is not in use.
• Wide Input Voltage Range: The IC can accept input voltages ranging from 2.7V to 5.5V, making it suitable for a wide range of applications.
• Adjustable Output Voltage: The output voltage can be adjusted from 4V to 24V, allowing flexibility in LED backlighting design.
• Overvoltage Protection: The LM2751SDX-B incorporates overvoltage protection to safeguard the LED backlight from excessive voltage levels.
• Thermal Shutdown Protection: In case of excessive temperature, the IC automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Wide input voltage range - Adjustable output voltage - Overvoltage and thermal shutdown protection

Disadvantages: - Limited to LED backlighting applications - Requires additional external components for complete circuit implementation

Working Principles

The LM2751SDX-B operates as a step-up (boost) converter. It takes the input voltage and boosts it to a higher level suitable for driving LED backlights. The feedback pin (FB) is used to regulate the output voltage, ensuring stable and accurate illumination.

Detailed Application Field Plans

The LM2751SDX-B is commonly used in various electronic devices that require LED backlighting, such as: - LCD monitors - Mobile phones - Tablets - Automotive displays - Portable gaming devices

Detailed and Complete Alternative Models

Some alternative models to the LM2751SDX-B include: - LM2752SDX-C - LM2753SDX-A - LM2754SDX-B - LM2755SDX-D

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

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