SC4503 View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC4503

1.3MHz Step-Up Switching Regulator with 1.4A Switch

Semtech Corporation 

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POWER MANAGEMENT

Typical Characteristics

FB Voltage vs Temperature

1.30

1.25

1.20

1.15

1.10

-50 -25

0 25 50 75

Temperature (°C)

100 125

VIN Under-voltage Lockout

Threshold vs Temperature

2.6

2.4

2.2

2.0

1.8

1.6

-50 -25

0 25 50 75 100 125

Temperature (°C)

Switch Saturation Voltage

vs Switch Current

400

125°C

300

25°C

200

100

-40°C

0

0.0

0.5

1.0

1.5

2.0

Switch Current (A)

 2007 Semtech Corp.

6

SC4503

Switching Frequency

vs Temperature

1.5

1.4

1.3

1.2

1.1

1.0

-50 -25

0 25 50 75 100 125

Temperature (°C)

Switch Current Limit

vs Temperature

2.0

1.8

1.6

1.4

1.2

1.0

-50 -25

VSHDN/SS = 3V

0 25 50 75 100 125

Temperature (°C)

VIN Quiescent Current

vs Temperature

0.80

0.75

0.70

0.65

0.60

-50 -25

VFB = 1.5V

0 25 50 75 100 125

Temperature (°C)

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