STEVAL-ISA098V1
2 A step-down switching demonstration board based on the L7985A in HSOP8 package
Data brief
Features
■2 A DC output current
■From 4.5 V to 38 V range input voltage
■Output voltage adjustable from 0.6 V
■250 kHz switching frequency programmable up to 1 MHz
■Internal soft-start and enable
■Low dropout operation: 100% duty cycle
■Voltage feed-forward
■Zero load current operation
■Overcurrent and thermal protection
■RoHS compliant
Description
The STEVAL-ISA098V1 demonstration board is a step-down switching power supply based on the L7985A in HSOP8 package.
The L7985A is a step-down regulator with a 2.5 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 2 A current to the load depending on the application conditions.
The input voltage can range from 4.5 V to 38 V, while the output voltage can be set starting from 0.6 V to VIN.
Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.
April 2012 |
Doc ID 023082 Rev 1 |
1/4 |
For further information contact your local STMicroelectronics sales office. |
www.st.com |
2/4
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diagram Schematic .1 Figure
1
diagram Schematic
diagram Schematic
ISA098V1-STEVAL