STEVAL-ISA068V1 STMicroelectronics

STEVAL-ISA068V1 4 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S32 in DFN 4x4 package Data brief Features 4 A DC output current 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 capacitor Power Good (POR) Cycle-by-cycle current limiting Current foldback short-circuit protection RoHS compliant Description The STEVAL-ISA068V1 is based on the ST1S32, 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 V . in The peak current mode control with internal compensation delivers a very compact solution with a minimum component count. June 2012 Doc ID 023047 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4 6 6 Schematic diagram STEVAL-ISA068V1 1 Schematic diagram Figure 1. Schematic diagram 6 OUT U U , , U( U( U U 37 2 2 K K 34 3 34 3 0 . 0 // 6). 37 E0 2 2 K K 6). % 5 5 2 2 K K U U 6). - V 2/4 Doc ID 023047 Rev 1