FEATURES AND BENEFITS
Switch-mode buck controller that drives strings of LEDs up to 600 V power-efficiently Controller with power-efficient Boundary Conduction Mode (BCM) operation: Virtually no reverse recovery losses in freewheel diode Zero Current Switching (ZCS) at switch, switch-on Zero voltage or valley switching at switch, switch-on Minimal required inductance value and size Suitable for direct Pulse Width Modulation (PWM) dimming Fast transient response through cycle-by-cycle current control, thereby: Preventing over or undershoots in the Light Emitting Diode (LED) current Enabling efficient PWM dimming by quickly turning the converter on and off and thus removing the need for extra dimming switches and high-side drivers Single controlled input voltage required for all UBA3070 driven LED strings in RGB or white backlighting units No binning on LED forward voltage required Protections: UnderVoltage LockOut (UVLO) Leading Edge Blanking (LEB) OverCu...
NXP Semiconductors
