FAN5340MPX

Overview

The FAN5340MPX is a single-output DC-DC step-up (boost) LED driver IC manufactured by onsemi. It integrates an internal power switch and supports PWM dimming for precise brightness control. The device operates with a supply voltage range of 2.7V to 5.5V and delivers a regulated output current of up to 40mA. Designed for surface-mount applications, it utilizes an 8-MLP (3x3mm) package. The integrated switching frequency is 1.2MHz, enabling the use of compact external components suitable for space-constrained portable electronics.

Feature Summary

• Integrates a high-efficiency internal power switch for boost topology operation
• Supports pulse-width modulation (PWM) dimming for accurate backlight brightness adjustment
• Operates within a wide input voltage range from 2.7V to 5.5V

Applications

• LCD panel backlighting systems
• Portable consumer electronics displays
• Mobile device illumination circuits

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package integrity upon receipt, as the small 8-MLP form factor requires careful handling during inspection. Ensure storage conditions comply with moisture sensitivity level requirements to prevent soldering defects during assembly.

Selection Notes

Select this component when designing low-power LED backlight drivers requiring a compact footprint. The integrated switch eliminates the need for external inductors with high current ratings. Verify that the required LED forward voltage remains below the maximum boost output capability defined in the official datasheet for the specific operating conditions.

Part Context

This part belongs to the FAN5340 family of LED drivers. It serves as a specialized solution for managing LED strings in portable devices where size and efficiency are critical constraints. The design focuses on minimizing board space while maintaining stable current regulation for consistent display performance.

Replacement Considerations

Consult official cross-reference documentation for verified substitutes. Ensure any replacement maintains the 8-MLP package dimensions and 40mA output current capability to preserve mechanical and electrical compatibility.