onsemi

FAN5340UCX

FAN5340UCX Description

The FAN5340UCX from onsemi is a high-efficiency, PWM dimmable DC-DC regulator designed for LED backlighting applications. This obsolete but robust IC integrates an internal switch, operating within a 2.7V to 4.8V input range and delivering a regulated output voltage of 6.2V to 16V at 40mA per channel. With a 1.2MHz switching frequency, it minimizes external component size while ensuring stable performance. Packaged in an 8-pin WLCSP (Wafer-Level Chip Scale Package) and supplied in Tape & Reel (TR), it is optimized for surface-mount assembly in space-constrained designs.

FAN5340UCX Features

• Integrated Switch: Eliminates the need for an external MOSFET, reducing BOM cost and PCB footprint.
• Wide Input Range (2.7V–4.8V): Supports battery-powered and low-voltage systems.
• PWM Dimming: Enables precise brightness control for LED backlights.
• High Efficiency (1.2MHz Frequency): Reduces inductor size and improves thermal performance.
• Compact 8WLCSP Package: Ideal for portable and miniaturized designs.
• ROHS3 & REACH Compliant: Meets environmental and safety standards.

FAN5340UCX Applications

The FAN5340UCX excels in backlighting for LCD displays in:

• Smartphones and Tablets: Space-saving design suits slim devices.
• Wearable Electronics: Low power consumption extends battery life.
• Industrial HMI Panels: Reliable performance under varying input voltages.
• Automotive Infotainment: PWM dimming ensures flicker-free display adjustment.

Conclusion of FAN5340UCX

Though marked obsolete, the FAN5340UCX remains a viable solution for high-efficiency LED driving in compact, low-power systems. Its integrated switch, PWM dimming, and wide voltage range make it a versatile choice for backlighting applications. Designers seeking alternatives should consider newer onsemi offerings, but legacy designs may still leverage its proven performance.