Description

The A8504952S44A is an electronic component categorized as backshells and cable clamps. This multi-output WLED driver is designed for medium display backlighting needs. It integrates a boost converter and eight current-sinks, which boosts the output voltage up to 47V with its high voltage capability, catering to a wide range of LED backlighting applications. The A8504952S44A is suitable for applications like thin notebook displays, LCD TVs, RGB backlighting, GPS systems, and portable DVD players.

Features and Benefits

The A8504952S44A comes with multiple features that make it a preferred choice. It has active current sharing between six LED strings for ±1.3% typical current matching and a ±1.2% typical current accuracy. It can drive up to 11 series × 8 parallel = 88 LEDs (Vf = 3.5 V, If = 40 mA) and has external PWM control for LED dimming and an external resistor for LED current setting. It also includes a boost converter with integrated 50 V, 2 A DMOS, LED sinks rated for 45 mA, 200 kHz to 2 MHz switching frequency, open LED disconnect, boost current limit, thermal shutdown, and soft start. Additionally, it does not produce audible ceramic capacitor noise during PWM dimming and includes adjustable overvoltage protection (OVP) and doesn't require pull-up resistors for LED modules that use ESD (Electrostatic Discharge) capacitors.

Application Scenarios

The A8504952S44A can be used in various applications, including but not limited to, backlighting for thin notebook displays, LCD TVs, RGB backlighting, GPS systems, and portable DVD players.

Comparison

• Active current sharing between six LED strings for ±1.3% typical current matching
• Flexible channel selection control and high voltage capability allow a wide range of LED backlighting applications
• Includes adjustable overvoltage protection (OVP)
• No pull-up resistors required for LED modules that use ESD capacitors.

• None reported