General Description

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

are ideal for driving up to eight white LEDs in series or

up to 30V.

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