onsemi

FAN5346S30X

FAN5346S30X Description

The FAN5346S30X from onsemi is a high-performance DC-DC regulator designed for LED driver applications, particularly backlighting in displays and portable electronics. This obsolete but robust component integrates an internal switch, enabling efficient power conversion with minimal external components. Operating within a 2.5V to 5.5V input range, it delivers a 30V output at 25mA per channel, making it suitable for driving high-voltage LED strings. The device features PWM dimming for precise brightness control and operates at a 1.2MHz switching frequency, ensuring low EMI and compact PCB designs. Packaged in a 6-pin SSOT and available in Tape & Reel (TR), it meets ROHS3 and REACH compliance standards.

FAN5346S30X Features

• Integrated Switch: Eliminates the need for external MOSFETs, reducing BOM cost and board space.
• Wide Input Range (2.5V–5.5V): Compatible with Li-ion batteries and low-voltage power sources.
• High Output Voltage (30V): Supports long LED strings in series configurations.
• PWM Dimming (1.2MHz): Enables flicker-free brightness adjustment for displays.
• Compact 6-SSOT Package: Ideal for space-constrained applications.
• Low EMI: High switching frequency minimizes interference in sensitive circuits.
• ROHS3/REACH Compliant: Environmentally friendly and suitable for global markets.

FAN5346S30X Applications

• LCD/OLED Backlighting: Smartphones, tablets, and automotive displays.
• Portable Electronics: Handheld devices requiring efficient LED drivers.
• Industrial Lighting: Low-power indicator or panel lighting systems.
• Consumer Electronics: TVs, monitors, and signage with PWM-controlled backlighting.

Conclusion of FAN5346S30X

The FAN5346S30X stands out for its high-voltage output, integrated design, and PWM dimming capabilities, making it a reliable choice for backlight applications. While marked as obsolete, its performance and compliance with environmental standards ensure suitability for legacy designs or replacements. Its compact footprint and low EMI operation further enhance its appeal for space-sensitive and noise-critical systems. For engineers seeking a proven LED driver solution, the FAN5346S30X remains a technically sound option.