BL8042B

BL8042B High Efficiency 1.2MHz 28V 2A Step-up DC/DC Converter DESCRIPTION The BL8042B is a constant frequency, current mode step-up converter intended for small, low power applications. The BL8042B switches at 1.2MHz and allows the use of tiny, low cost capacitors and inductors 2mm or less in height. Internal soft-start results in small inrush current and extends battery life. The BL8042B includes under-voltage lockout, current limiting, and thermal overload protection to prevent damage in the event of an output overload. BL8042B is available in SOT23-6 package that is PB free. FEATURES  2V to 24V Input Voltage  Up to 28V Output Voltage  Integrated 80mΩ Power MOSFET  1.2MHz Fixed Switching Frequency  Internal 4A Switch Current Limit  Internal Compensation  Thermal Shutdown  Output Adjustable from 0.6V  Available in SOT23-6 Package APPLICATIONS  ABS Set-Top Boxed  DVB-S/S2 TYPICAL APPLICATION BL8042B Figure1. BL8042B Typical Application Circuit O...