ST ISA070V1 User Manual
STEVAL-ISA070V1
3 A / 1.5 MHz step-down synchronous switching regulator based on
the ST1S31 in SO-8 package
Data brief
Features
■ 4 A peak 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 mΩ and 45 mΩ power MOSFETs
■ All ceramic capacitor
■ Power Good (POR)
■ Cycle-by-cycle current limiting
■ Current foldback short-circuit protection
■ RoHS compliant
Description
The STEVAL-ISA070V1 demonstration board is
based on the ST1S31, 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
The peak current mode control with internal
compensation delivers a very compact solution
with a minimum component count.
.
in
April 2012 Doc ID 023067 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Schematic diagram STEVAL-ISA070V1
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1 Schematic diagram
Figure 1. Schematic diagram
2/4 Doc ID 023067 Rev 1
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