SC4502 View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC4502

1.4Amp, 2MHz Step-Up Switching Regulator with Soft-Start

Semtech Corporation 

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SC4502/SC4502H

POWER MANAGEMENT

Typical Application Circuits

VIN

L1

D1

VOUT

90

Efficiency at 14V input

14V

SS14

35V

85

1.4MHz 6.8µH

8

6,7

R1

17.4K

80

IN

SW

OFF ON 3 SHDN

FB 2

75

C1

2.2µF

C3

47nF

10

SC4502H

SS

COMP

1

GND ROSC

4,5 9

R4

R3

5.11K

C4

C2

10µF

R2

649

70

65

60

55

1.5nF

50

1.0MHz 10µH

0

0.05

0.1

0.15

0.2

Load (A)

Figure 13(a). All Ceramic Capacitor High Voltage Application

f (MHz)

1.0

1.4

R4(KΩ)

15.8

10

L1

10uH IHLP-2525BD_01

6.8uH IHLP-2525BD_01

Figure 13(b). Efficiency of the All Ceramic Capacitor High

Voltage Application

 2005 Semtech Corp.

18

www.semtech.com

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