SC403B datasheet(9/32 Pages) SEMTECH

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SC403B

Typical Characteristics

Efficiency vs. Load — Forced Continuous Mode

20%

40%

60%

80%

100%

0.001

0.01

0.1

IOUT (ADC)

0.5

1.5

2.5

VIN = 12V

VIN = 20V

VIN = 6V

VIN = 12V

VIN = 6V

VIN = 20V

PLOSS

Efficiency

Characteristics in this section are based on using the applicable Detailed Application Circuit — 2.

OUT vs. Load — PSAVE Mode

1.14

1.16

1.18

1.20

1.22

1.24

1.26

0.001

0.01

0.1

IOUT (ADC)

0.02

0.04

0.06

0.08

0.1

0.12

VIN = 12V

VIN = 6V

VIN = 20V

VPEAK

Regulation

Efficiency vs. Load — PSAVE Mode

OUT = 1.2V, VDD = 5V, EN/PSV is floating, external bias

100

0.001

0.01

0.1

IOUT (ADC)

0.5

1.5

2.5

VIN = 12V

VIN = 6V

VIN = 20V

PLOSS

Efficiency

OUT vs. Load — Forced Continuous Mode

1.14

1.16

1.18

1.20

1.22

1.24

1.26

0.001

0.01

0.1

IOUT (ADC)

0.025

0.05

0.075

0.1

0.125

0.15

VIN = 12V

VIN = 6V

VIN = 20V

VPEAK

Regulation

OUT = 1.2V, VDD = 5V, EN/PSV is floating, external bias

OUT = 1.2V, VDD = 5V, = EN/PSV, external bias

OUT = 1.2V, VDD = 5V = EN/PSV, external bias

Efficiency vs. Load — PSAVE Mode

OUT = 1.2V, VIN = 12V, EN/PSV = VDD, external bias

OUT vs. Load — PSAVE Mode

OUT = 1.2V, VIN = 12V, EN/PSV = VDD, external bias

100

0.001

0.01

0.1

IOUT (ADC)

0.5

1.5

2.5

VDD = 5V

VDD = 3.3V

PLOSS

Efficiency

1.14

1.16

1.18

1.20

1.22

1.24

1.26

0.001

0.01

0.1

IOUT (ADC)

0.02

0.04

0.06

0.08

0.1

0.12

VDD = 3.3V

VDD = 5V

Regulation

VPEAK

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