LM3430SDX/NOPB

Overview

The LM3430SDX/NOPB is a boost controller designed for LED backlighting applications, manufactured by Texas Instruments. It operates within an input voltage range suitable for single-cell lithium-ion batteries and supports PWM dimming for brightness control. The device integrates a 2 MHz switching frequency to minimize external component size. It features thermal shutdown protection and operates reliably across a junction temperature range of -40°C to +125°C. Packaged in a compact WSON-12 footprint, it is optimized for space-constrained portable electronics.

Feature Summary

• Integrated high-frequency boost controller optimized for LED backlight drivers
• Supports analog and pulse-width modulation (PWM) dimming methods
• Includes thermal shutdown protection for enhanced system reliability

Applications

• LED backlighting for mobile phones
• LCD displays in portable devices
• Camera flash drivers

Procurement Notes

Verify the exact suffix against the manufacturer's current datasheet to ensure compatibility with specific packaging or environmental compliance requirements. Confirm that the WSON-12 package outline matches your PCB footprint design. Cross-reference the part number with official Texas Instruments documentation to validate availability status and lead times through authorized distributors.

Selection Notes

Select this component when designing LED backlight circuits requiring a compact solution with integrated protection features. Ensure the input voltage source aligns with the controller's operating range. Verify that the required dimming method, whether analog or PWM, is supported by the host system interface. Consider the thermal performance characteristics relative to the expected ambient conditions and power dissipation levels in the final enclosure.

Part Context

This part belongs to the LM3430 family of LED driver controllers from Texas Instruments. It is specifically engineered for boosting voltage from low-input sources to drive series-connected LEDs. The family emphasizes efficiency and small form factor, making it suitable for battery-powered consumer electronics where space and power conservation are critical design constraints.

Replacement Considerations

Consult the official Texas Instruments substitution guide for verified alternatives. Ensure any substitute maintains compatible pinout, electrical specifications, and package dimensions to avoid redesign efforts.