LM3639AYFQR

Product Overview

LM3639AYFQR belongs to the category of LED drivers and controllers. It is commonly used in various electronic devices to control the brightness of LED backlighting. The LM3639AYFQR is known for its high efficiency, compact package, and versatile functionality. It comes in a small form factor package and is essential for managing LED backlighting in a wide range of applications.

Basic Information

• Category: LED drivers and controllers
• Use: Control the brightness of LED backlighting
• Characteristics: High efficiency, compact package
• Package: Small form factor
• Essence: Essential for managing LED backlighting
• Packaging/Quantity: Varies based on manufacturer's specifications

Specifications

The LM3639AYFQR features a voltage range of 2.7V to 5.5V and an adjustable current sink for driving up to 11 LEDs. It also includes a built-in boost converter with programmable over-voltage protection and over-current protection.

Detailed Pin Configuration

The detailed pin configuration of LM3639AYFQR is as follows: 1. VIN: Input voltage 2. GND: Ground 3. ISET: Current setting pin 4. PWM: Pulse width modulation input 5. EN: Enable pin 6. BST: Boost converter output 7. FB: Feedback pin 8. LED1-LED11: LED outputs

Functional Features

The LM3639AYFQR offers precise LED current matching, which ensures uniform brightness across all LEDs. It also provides a wide dimming range and supports both analog and PWM dimming control.

Advantages and Disadvantages

Advantages: - Precise LED current matching - Wide dimming range - Supports analog and PWM dimming control

Disadvantages: - Limited to driving up to 11 LEDs

Working Principles

The LM3639AYFQR operates by regulating the current flowing through the LEDs, thereby controlling their brightness. It utilizes a boost converter to efficiently drive the LEDs while providing protection against over-voltage and over-current conditions.

Detailed Application Field Plans

The LM3639AYFQR is widely used in various applications such as: - LCD monitors - Automotive infotainment systems - Portable electronics - Industrial displays

Detailed and Complete Alternative Models

Some alternative models to LM3639AYFQR include: - LT3957 - TPS61165

In summary, the LM3639AYFQR is a versatile LED driver and controller that offers precise brightness control, wide dimming range, and efficient operation. Its compact package and essential functionality make it a popular choice for managing LED backlighting in diverse electronic devices.

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