SY7201A - Silergy

SY7201A 30V High Current Boost LED Driver

SY7201 and SY7201A are DC/DC step-up converters that deliver 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 SY7201 and SY7201A .

Features

• 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: ο SY7201: 20kHz~1MHz ο SY7201A: 100Hz~10kHz
• Internal softstart limits the inrush current
• Open LED over voltage protection
• RoHS Compliant and Halogen Free
• Compact package: SOT23-6 pin Applications
• GPS Navigation Systems
• Handheld Devices
• Portable Media Players Typical Applications L D Vin Cin Dimming IN LX EN/PWM OVP GND FB R1 Figure 1. Schematic Diagram Vout Cout AN_SY7201/A Rev. 0.9 Sile.