SC473 datasheet(15/18 Pages) SEMTECH

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SC473

POWER MANAGEMENT

Typical Characteristics

Nominal Load Regulation vs. Output Current

VOUT = 1.1500V Min-Max limits @ +/- 1%

1.1200

1.1300

1.1400

1.1500

1.1600

1.1700

1.1800

0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 30.00 32.00 34.00

Output Current (A)

19V

Min

Nom

Max

Figure 1 – Nominal Mode Line and Load Regulation

Battery Load Regulation vs. Output Current

VOUT = 0.97500V Min-Max limits @ +/- 1%

0.9400

0.9500

0.9600

0.9700

0.9800

0.9900

1.0000

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.00

16.00

18.00

20.00

22.00

24.00

Output Current (A)

19V

Min

Nom

Max

Figure 2 – Battery Mode Line and Load Regulation

Nominal Efficiency vs. Output Current

VOUT = 1.1500V

50.00%

60.00%

70.00%

80.00%

90.00%

100.00%

0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 30.00 32.00 34.00

Output Current (A)

19V

Figure 3 – Nominal Mode Efficiency v/s Output Current

Battery Efficiency vs. Output Current

VOUT = 0.97500V

50.00%

60.00%

70.00%

80.00%

90.00%

100.00%

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.00

16.00

18.00

20.00

22.00

24.00

Output Current (A)

19V

Figure 4 – Battery Mode Efficiency v/s Output Current

Frequency vs. VIN

VOUT = 1.1500V @ 30A

100000

200000

300000

400000

500000

8.00

9.00

10.00

11.00

12.00

13.00

14.00

15.00

16.00

17.00

18.00

19.00

20.00

VIN (V)

VIN

Figure 5 – Nominal Mode Frequency v/s Input Voltage

PMON Error vs. Current

VOUT = 1.1500V

-20

-10

4.00

9.00

14.00

19.00

24.00

29.00

34.00

Iout (A)

DCR SENSE

Figure 6 – Typical PMON Error v/s Output Current

*Above performance graphs correspond to Applications Schematic on page 2

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