SIC403A

www.vishay.com SiC403A, SiC403BCD Vishay Siliconix 6 A microBUCK® SiC403A/B Integrated Buck Regulator with Programmable LDO DESCRIPTION The Vishay Siliconix SiC403A/B an advanced stand-alone synchronous buck regulator featuring integrated power MOSFETs, bootstrap switch, and a programmable LDO in a space-saving PowerPAK MLP55-32L pin packages. The SiC403A/B 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. 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 SiC403A/B also provides an enable input and a power good output. PRODUCT SUMMARY Input Voltage Range Output Voltage Range Operating Frequency Continuous Output Current Peak Efficiency Package 3 V to 28 V 0.6 V to VIN x 0.75 a 200 kHz to 1 MHz 6A 93 % PowerPAK MLP55-32L Note a. See “High Output Voltage Operation” section FEATURES High efficiency > 93 % 6 A continuous output current capability Integrated bootstrap switch Programmable 200 mA LDO with bypass logic Temperature compensated current limit All ceramic solution enabled Pseud...