SC2542TETRT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC2542TETRT

High Performance Wide Input Range Dual Synchronous Buck Controller

Semtech Corporation 

POWER MANAGEMENT

Typical Characteristics (Cont.)

Over current protection (5A/10mV)

CH1: TG

CH2: BG

CH3: IL

CH4: Vo

SC2542

Efficiency curve for Vout = 3.3V

100%

V in= 8V

V in= 16V

80%

60%

40%

20%

0%

0 1 2 3 4 5 6 7 8 9 10

Io( A )

Operating frequency vs. Rosc

3 50

3 00

2 50

2 00

1 50

1 00

50

Ro s c( K OHM)

Efficiency curve for SPWM Mode vs. SKIP Mode

RILIM vs. OCP (Vin = 12V)

100.00%

80.00%

60.00%

40.00%

20.00%

0.00%

10

100

1000

Io(mA)

skip mode

Synchronize

10000

9

8

7

6

5

4

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)

© 2005 Semtech Corp.

24

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