Description:
The SR1555 is a multi-channel linear constant-current LED driver chip that divides the series-LED in up to four segments to achieve a high power factor with a low THD. The chip integrates with over temperature compensation function. When internal temperature of the chip exceeds the compensation starting temperature, it will linearly reduces the output current to ensure application reliability and avoid flicker. The scheme requires very few components to effectively reduce the cost. The SR1555 uses ESOP8 packaging. The chip chassis has a radiator, reducing internal temperature of the chip, can help maintaining a stable output current. SR1555 can be applied to a variety of universal LED lighting, such as LED fluorescent tube, bulb lamp, ceiling lamp and other applications.
Features:
_Input Voltage: 110Vac/220Vac
_Power Factor(PF) > 0.9
_THD < 10%
_Over Temperature Protection(OTP) and Compensation
_ESOP8 Package
Applications:
_LED Fluorescent tube, Lighting Bulb, Ceiling Lamp
_LED Constant Current Driver
