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SC2542 Datasheet(PDF) 24 Page - Semtech Corporation

Part # SC2542
Description  High Performance Wide Input Range Dual Synchronous Buck Controller
PDF  27 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC2542 Datasheet(HTML) 24 Page - Semtech Corporation

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© 2005 Semtech Corp.
www.semtech.com
SC2542
POWER MANAGEMENT
Typical Characteristics (Cont.)
0%
20%
40%
60%
80%
100%
01
2
3
4
5
6
7
8
9
10
Io( A )
V in= 8V
V in= 16V
0.00%
20.00%
40.00%
60.00%
80.00%
100.00%
10
100
1000
10000
Io(mA)
skip mode
Synchronize
Over current protection (5A/10mV)
CH1: TG
CH2: BG
CH3: IL
CH4: Vo
Efficiency curve for Vout = 3.3V
Efficiency curve for SPWM Mode vs. SKIP Mode
50
100
150
200
250
300
350
Ro s c( K OHM)
4
5
6
7
8
9
4.5
5 .0
5.5
6 .0
6 .5
7 .0
7.5
8 .0
8 .5
9.0
9.5
RIL IM (K O H M)
Operating frequency vs. Rosc
RILIM vs. OCP (Vin = 12V)



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