STEVAL-ISA090V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – 3.5 A step-down switching regulator based on the L4973

STEVAL-ISA090V1
3.5 A step-down switching regulator based on the L4973
Data brief
Features
■ Input voltage range: 8 V to 55 V
■ Output voltage: 5.1 V ± 3% (line, load and
thermal)
■ Output ripple: 51 mV
■ Output current range: 1 mA to 3.5 A
■ Max output ripple current: 30%
■ Current limit: 4.5 A
■ Switching frequency: 150 kHz
■ RoHS compliant
Description
The STEVAL-ISA090V1 demonstration board
provides a platform for evaluation of the L4973, a
3.5 A step-down monolithic power switching
regulator operating in continuous mode.
Based on the selection of the external
components, the device can operate in the entire
input voltage range of 8 V < V_IN < 55 V. The
output voltage is limited by the voltage rating of
the output capacitor, so it can be adjusted within
the 3.3 V < V_OUT < 30 V range through voltage
divider R₃, R₄. The input and output capacitors
are capable of sustaining the RMS current within
the operating range.
STEVAL-ISA090V1
April 2011
Doc ID 018689 Rev 1
For further information contact your local STMicroelectronics sales office.
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