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STEVAL-ISA049V2 데이터시트(PDF) 1 Page - STMicroelectronics

부품명 STEVAL-ISA049V2
상세설명  Synchronous dual buck converter with inhibit demonstration board based on the ST2S06B
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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Data brief
For further information contact your local STMicroelectronics sales office.
July 2009
Doc ID 15977 Rev 1
1/4
4
STEVAL-ISA049V2
Synchronous dual buck converter with inhibit
demonstration board based on the ST2S06B
Features
Step-down current mode PWM (1.5 MHz)
DC-DC converter
Fixed or adjustable output voltage from 0.8 V
2% DC output voltage tolerance
Synchronous rectification
Inhibit function
Internal soft start for start-up current limitation
and power ON delay of 50-100 µs
Typical efficiency: > 90%
0.5 A output current capability
Non-switching quiescent current: max 1 mA
overtemperature range
RDS(on) 150 mΩ (typ.)
Uses tiny capacitors and inductors
RoHS compliant
Description
This demonstration board is based on the
ST2S06B, a dual synchronous step-down DC-DC
converter optimized for powering low-voltage
digital cores in ODD applications and, generally,
used to replace the high current linear solution
when the power dissipation may cause a high
heating of the application environment.
It provides up to 0.5 A over an input voltage range
of 2.5 V to 5.5 V.
A high switching frequency (1.5 MHz) allows the
use of tiny surface-mount components. A resistor
divider to set the output voltage value, an inductor
and two capacitors are required for every channel.
In addition, a low output ripple is guaranteed by
the current mode PWM topology and by the use
of low ESR surface-mount ceramic capacitors.
The demoboard is thermal protected and current
limited to prevent damage due to accidental short-
circuit.
STEVAL-ISA049V2
www.st.com


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