ST ISA069V1 User Manual
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 mΩand 45 mΩpower 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.
April 2012 |
Doc ID 022882 Rev 1 |
1/4 |
For further information contact your local STMicroelectronics sales office. |
www.st.com |
Schematic diagram |
Document header RPN(s) |
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1 Schematic diagram
Figure 1. Schematic diagram
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Doc ID 022882 Rev 1 |
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