Design contains obsolete parts

SIC403DB: 1.2V @ 6A, 3 ~ 28V in

Summary

The Vishay Siliconix SiC401A/B, SiC402A/B and SiC403A/B are advanced stand-alone synchronous buck regulators, featuring integrated power MOSFETs, bootstrap switch, and a programmable LDO in a space-saving PowerPAK MLP55-32L pin packages.

The SiC401A/B, SiC402A/B and SiC403A/B are capable of operating with all ceramic solutions and switching frequencies up to 1 MHz. The programmable frequency, synchronous operation and selectable power-save feature 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. Both the SiC401A/B, SiC402A/B and SiC403A/B provides an enable input and a power good output.

Specifications

Manufacturer	Vishay Siliconix
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	SIC403DB-ND
Eval Board Supplier	Vishay Siliconix
Eval Board	Board not Stocked
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	1.2 V
Current Out	6 A
Voltage In	3 ~ 28 V
Efficiency @ Conditions	>85%, 6V in, 1.2 V ~ 0.006 ~ 6 A (PS) >84%, 12V in, 1.2V @ 0.006 ~ 6 A (PS) >83%, 20V in, 1.2V @ 0.006 ~ 6 A (PS) >80%, 6V in, 1.2V @ 0.25 ~ 6 A (Cont.) >80%, 20V in, 1.2V @ 0.4 ~ 6 A (Cont.) >80%, 12V in, 1.2V @ 0.35 ~ 6 A (Cont.)
Voltage Out Range	0.6 ~ 5.5 V
Features	Current Limit (Adj. or Fixed) LDO Regulator(s), On-Chip Over Voltage Protection Power Good Output Power Save Mode Shutdown, Enable, Standby Soft Start Under Voltage Protection, Brown-Out
Switching Frequency	200 kHz ~ 1 MHz
Standby Current [Typical]	160 µA
Quiescent Current [Typical]	12 µA
Component Count + Extras	45 + 15
Internal Switch	Yes
Design Author	Vishay Siliconix
Application / Target Market	Audio: Home Theater Systems Computers Point of Load (PoL) Portable Devices Printer, Plotter Servers Set-Top Boxes
Standby Current [Maximum]	- Not Given
Quiescent Current [Maximum]	20 µA
Main I.C. Base Part	SIC403
Date Created By Author	2014-01
Date Added To Library	2014-09