AL3069Q Boost Controller

The AL3069Q from Diodes Incorporated is a high-efficiency 60 V boost controller that includes four 80 V high-precision current sink channels, as well as fault diagnostics, for LED backlight applications. The boost technology has built-in adaptive voltage control and operates over a wide input-voltage range from 4.5 V to 60 V. Its operating frequency can be adjusted from 100 kHz to 1 MHz.

The four-channel output current can be easily set with an external resistor. The channel-to-channel and device-to-device current matching is ±0.5% (typical).

Extensive fault diagnostic and robust protection features include:

• Cycle-by-cycle current limit
• Soft start
• Undervoltage lockout
• Programmable overvoltage
• Overtemperature
• Open/short LED protection
• Open/short Schottky diode protection
• Inductor short-circuit protection
• V_OUT short protection
• A fault indicator (FAULTB) pin

These improve system robustness for automotive applications. The AL3069Q is available in the TSSOP-16EP (Type DX) and U-QFN4040-16/SWP (Type UXB) packages. A standard compliance version, AL3069, is available and is suitable for industrial and commercial applications.

*Automotive-compliant - AEC qualified, manufactured in facilities certified to IATF 16949, supporting PPAP documents.