Semtech Corp. 1.3Mhz Step-Up Sw Reg W 1.4A T/r Rohs Compliant Semtech SC4503WLTRT

The SC4503 is a 1.3MHz current-mode step-up switching regulator featuring an integrated 1.4A power transistor. It operates with an input voltage range of 2.5V to 20V and can boost output voltage up to 27V. The device is designed for high voltage applications, with an internal switch rated at 34V, making it suitable for Boost and SEPIC configurations. The regulator includes a shutdown and soft-start pin, which helps to manage input current and output overshoot during startup. It has a low shutdown current of less than 1OºA, making it ideal for portable applications. The SC4503 is available in compact packages, specifically a low-profile 5-lead TSOT-23 and an 8-lead 2x2mm MLPD-W, allowing for the use of small external passive components. Typical applications include local DC-DC converters, TFT bias supplies, XDSL power supplies, medical equipment, digital cameras, and white LED drivers. The device is fully compliant with WEEE and RoHS standards.