SC2441AEVB(2006) View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC2441AEVB
(Rev.:2006)

1.8V to 20V Input 2-Phase Synchronous Step-down Controllers with Step-up Converter

Semtech Corporation 

POWER MANAGEMENT

Typical Characteristics

Phase Shift vs Temperature

225

180

R2 = 36.5KW

135

R2 = 47.5KW

90

R2 = 71.5KW

45

0

-50

ROSC = 40.2KW

fSYNC = 500KHz

R2 = 143KW

-25 0 25 50 75 100 125

Temperature (°C)

Pe rce ntage De viation In

Phase Shift vs Temperature

25

20

R2 = 47.5KW

15

R2 = 36.5KW

10

5

R2 = 71.5KW

0

-5

-10

-15

-20

-25

-50

ROSC = 40.2KW

fSYNC = 500KHz

R2 = 143KW

-25 0 25 50 75 100 125

Temperature (°C)

SC2441A

Phase Shift vs Temperature

225

180

135

R2 = 34.8KW

R2 = 46.4KW

90

45

ROSC = 51.1KW

fSYNC = 400KHz

0

-50 -25 0 25

R2 = 68.1KW

R2 = 140KW

50 75 100 125

Temperature (°C)

Pe rce ntage De viation In

20

Phase Shift vs Temperature

R2 = 68.1KW

10

0 R2 = 140KW

R2 = 46.4KW

-10

-20

-50

ROSC = 51.1KW

fSYNC = 400KHz

R2 = 34.8KW

-25 0 25 50 75 100 125

Temperature (°C)

Phase Shift vs Temperature

225

180

R2 = 31.6KW

135

R2 = 41.2KW

90

R2 = 61.9KW

45

0

-50

ROSC = 66.5KW

fSYNC = 300KHz

R2 = 121KW

-25 0 25 50 75 100 125

Temperature (°C)

Percentage Deviation In

30

Phase Shift vs Temperature

20

10

0

R2 = 41.2KW

-10

R2 = 31.6KW

-20

-30

R2 = 61.9KW

-40

-50

-60

-50

ROSC = 66.5KW

fSYNC = 300KHz

R2 = 121KW

-25 0 25 50 75 100 125

Temperature (°C)

Upper Gate Driver Transition Time vs Load

Capacitance

100

VCC = 12V

80

tf

60

tr

40

20

0

0

1

Load Capacitance (nF)

25°C

10

Upper Gate Driver Transition Time vs Load

Capacitance

100

VCC = 5V

80

tf

60

40

20

0

0

tr

25°C

1

10

Load Capacitance (nF)

 2006 Semtech Corp.

16

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