SIC403 Datasheet | Vishay

DESCRIPTION The Vishay Siliconix Si C403 is an advanced stand-alone synchronous buck regulator featuring integrated power MOSFETs, bootstrap switch, and a programmable LDO in a space-saving MLPQ 5 x 5 - 32 pin package. The Si C403 is capable of operating with all ceramic solutions and switching frequencies up to 1 MHz. The programmable frequency, synchronous operation and selectable power-save allow operation at high efficiency across the full range of load current. The internal LDO may be used to supply 5 V for the gate drive circuits or it may be bypassed with an external 5 V for optimum efficiency and used to drive external n-channel MOSFETs or other loads. Additional features include cycle-by-cycle current limit, voltage soft-start, under-voltage protection, programmable over-current protection, soft shutdown and selectable power-save. The Vishay Siliconix Si C403 also provides an enable input and a power good output. FEATURES - Halogen-free According to IEC 61249-2-21 Definition - High efficiency > 95 % - 6 A continuous output current capability - Integrated bootstrap switch - Programmable 200 m A LDO with bypass logic - Temperature pensated current limit - Pseudo fixed-frequency adaptive on-time control - All ceramic solution enabled - Programmable input UVLO threshold - Independent enable pin for switcher and LDO - - - - - - Selectable ultra-sonic power-save mode Programmable soft-start Soft-shutdown 1 % internal reference voltage Power good output Under and over voltage protection PRODUCT SUMMARY Input Voltage Range Output Voltage Range Operating Frequency Continuous Output Current Peak Efficiency Package 3 V to 28 V 0.75 V to 5.5 V 200 k Hz to 1 MHz 6A 95 % at 300 k Hz MLPQ 5 mm x 5 mm .Data Sheet.net/ - pliant to Ro HS Directive 2002/95/EC APPLICATIONS - - - - - - Notebook, desktop, and server puters Digital HDTV and digital consumer applications Networking and telemunication equipment Printers, DSL, and STB applications Embedded applications Point of load...