• Input Voltage Range: 2.8 to 30V
• Switch Current Limit 2A
• Drives LED Strings up to 30V
• 1MHz Fixed Frequency Minimizes the External Components
• Dimming Frequency for EN/PWM Pin: 20kHz~1MHz
• Internal soft-start limits the inrush current
• Open LED Over Voltage Protection
• RoHS Compliant and Halogen Free

SY22146A is DC/DC step-up converter that delivers an accurate constant current for driving LEDs. Operation at a fixed switching frequency of 1MHz allows the device to be used with small value external ceramic capacitors and inductor. LEDs connected in series are driven with a regulated current set by the external resistor. The SY22146A is ideal for driving up to eight white LEDs in series or up to 30V.