for further information contact your local stmicroelectronics sales office. april 2012 doc id 022882 rev 1 1/4 4 STEVAL-ISA069V1 3 a / 1.5 mhz step-down synchronous switching regulator based on the st1s31 in dfn 3x3 package data brief features 4 a peak output current from 2.8 v to 5.5 v input voltage output voltage adjustable from 0.8 v 1.5 mhz switching frequency internal soft-start and enable integrated 60 m and 45 m power mosfets all ceramic capacitors power good (por) cycle-by-cycle current limiting current foldback short-circuit protection rohs compliant description the STEVAL-ISA069V1 demonstration board is based on the st1s31, which is an internally compensated 1.5 mhz fixed-frequency pwm synchronous step-down regulator. this device operates from 2.8 v to 5.5 v input, while it regulates an output voltage as low as 0.8 v and up to vin. the peak current mode control with internal compensation delivers a very compact solution with a minimum component count. www.st.com
schematic diagram document header rpn(s) 2/4 doc id 022882 rev 1 1 schematic diagram figure 1. schematic diagram $ 0 y 6 ) . 3 7 3 7 6 & |