STMicroelectronics 2 A step-down switching demonstration board based on the L7980 STEVAL-ISA092V1 STEVAL-ISA092V1 데이터 시트
제품 코드
STEVAL-ISA092V1
Data brief
For further information contact your local STMicroelectronics sales office.
December 2011
Doc ID 022620 Rev 1
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STEVAL-ISA092V1
2 A step-down
switching demonstration board based on the L7980
Features
■
2 A DC output current
■
4.5 V to 28 V input voltage
■
Output voltage: 3.3 V (adjustable from 0.6 V)
■
250 kHz switching frequency, programmable
up to 1 MHz
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-ISA092V1 is a step-down switching
power supply based on the L7980 in a QFN
package.
power supply based on the L7980 in a QFN
package.
The L7980 is a step-down switching regulator with
embedded Power MOSFET, so it is able to deliver
up to 2 A current to the load depending on the
application conditions.
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 28 V,
while the output voltage can be set starting from
0.6 V to V
while the output voltage can be set starting from
0.6 V to V
IN
.
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.
the device includes an internal 250 kHz switching
frequency oscillator that can be externally
adjusted up to 1 MHz.
STEVAL-ISA092V1