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CRCW0603154KFKEA Datasheet(PDF) 1 Page - Vishay Siliconix |
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CRCW0603154KFKEA Datasheet(HTML) 1 Page - Vishay Siliconix |
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1 / 26 page  Vishay Siliconix SiC403 Document Number: 66550 S12-0628-Rev. C, 19-Mar-12 www.vishay.com 1 This document is subject to change without notice. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 For technical support, please contact: analogswitchtechsupport@vishay.com microBUCK® SiC403 6 A, 28 V Integrated Buck Regulator with Programmable LDO DESCRIPTION The Vishay Siliconix SiC403 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 SiC403 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 SiC403 also provides an enable input and a power good output. FEATURES • High efficiency > 95 % • 6 A continuous output current capability • Integrated bootstrap switch • Programmable 200 mA LDO with bypass logic • Temperature compensated 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 • Material categorization: For definitions of compliance please see www.vishay.com/doc?99912 APPLICATIONS • Notebook, desktop, and server computers • Digital HDTV and digital consumer applications • Networking and telecommunication equipment • Printers, DSL, and STB applications • Embedded applications • Point of load power supplies TYPICAL APPLICATION CIRCUIT PRODUCT SUMMARY Input Voltage Range 3 V to 28 V Output Voltage Range 0.75 V to 5.5 V Operating Frequency 200 kHz to 1 MHz Continuous Output Current 6 A Peak Efficiency 95 % at 300 kHz Package MLPQ 5 mm x 5 mm PAD 1 AGND PAD 3 LX PAD 2 VIN PGND LX PGND PGND PGND PGND PGND 17 18 19 20 21 BST VIN FBL AGND VDD VOUT FB 1 2 3 4 5 7 6 8 SS 24 LX 23 22 VIN VOUT VOUT PGOOD 3.3 V EN/PSV (Tri-State) LDO_EN SiC403 (MLP 5 x 5-32L) 31 30 29 25 26 27 28 32 |
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