SC4502

SC4502/SC4502H 1.4Amp, 2MHz Step-Up Switching Regulator with Soft-Start POWER MANAGEMENT Description The SC4502/SC4502H is a high-frequency current-mode step-up switching regulator with an integrated 1.4A power transistor. Its high switching frequency (programmable up to 2MHz) allows the use of tiny surface-mount external passive components. Programmable soft-start eliminates high inrush current during start-up. The internal switch is rated at 32V (40V for the SC4502H) making the converter suitable for high voltage applications such as Boost, SEPIC and Flyback. www.DataSheet4U.com The operating frequency of the SC4502/SC4502H can be set with an external resistor. The ability to set the operating frequency gives the SC4502/SC4502H design flexibilities. A dedicated COMP pin allows optimization of the loop response. The SC4502/SC4502H is available in thermally enhanced 10-pin MLPD package. Features ‹ Low saturation voltage switch: 210mV (250mV for the SC4502H) ‹ Constant switching frequency current-mode control ‹ Programmable switching frequency up to 2MHz ‹ Soft-Start function ‹ Input voltage ranges from 1.4V to 16V ‹ Output voltage up to 32V (40V for the SC4502H) ‹ Low shutdown current ‹ Adjustable undervoltage lockout threshold ‹ Small low-profile thermally enhanced lead free package. This product is fully WEEE and RoHS compliant. Applications ‹ ‹ ‹ ‹ ‹ ‹ ‹ Flat screen LCD bias supplies TFT bias supplies XDSL power supplies Medical equipment Digital video cameras Portables ...