sc473mltrt Semtech Corporation, sc473mltrt Datasheet - Page 15

• Manufacturer Part Number: sc473mltrt
• Description: Sc473 Single-phase Single Chip Graphics Core Power Supply
• Manufacturer: Semtech Corporation

*Above performance graphs correspond to Applications Schematic on page 2
© 2006 Semtech Corp.
POWER MANAGEMENT
Typical Characteristics
100.00%
1.1800
1.1700
1.1600
1.1500
1.1400
1.1300
1.1200
500000
400000
300000
200000
100000
90.00%
80.00%
70.00%
60.00%
50.00%
0
0.00
8.00
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
2.00 4.00
9.00
Figure 3 – Nominal Mode Efficiency v/s Output Current
Figure 5 – Nominal Mode Frequency v/s Input Voltage
Figure 1 – Nominal Mode Line and Load Regulation
10.00
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
Nominal Load Regulation vs. Output Current
Nominal Efficiency vs. Output Current
11.00
V
OUT
19V
12.00
= 1.1500V Min-Max limits @ +/- 1%
V
Frequency vs. V
OUT
V
OUT
13.00
= 1.1500V @ 30A
9V
Output Current (A)
Output Current (A)
= 1.1500V
19V
V
14.00
IN
Min
(V)
VIN
IN
15.00
9V
Nom
16.00
Max
17.00
18.00
19.00
20.00
15
100.00%
1.0000
0.9900
0.9800
0.9700
0.9600
0.9500
0.9400
90.00%
80.00%
70.00%
60.00%
50.00%
-10
-20
60
50
40
30
20
10
0
4.00
0.00
0.00
2.00
2.00
Figure 4 – Battery Mode Efficiency v/s Output Current
Figure 2 – Battery Mode Line and Load Regulation
9.00
Figure 6 – Typical PMON Error v/s Output Current
4.00
4.00
Battery Load Regulation vs. Output Current
6.00
Battery Efficiency vs. Output Current
6.00
V
OUT
14.00
19V
= 0.97500V Min-Max limits @ +/- 1%
8.00
PMON Error vs. Current
8.00
V
V
10.00
OUT
OUT
10.00
9V
Output Current (A)
Output Current (A)
= 1.1500V
= 0.97500V
Iout (A)
DCR SENSE
19.00
19V
12.00
12.00
Min
14.00
14.00
9V
Nom
24.00
16.00
16.00
18.00
Max
18.00
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29.00
SC473
20.00
20.00
22.00
22.00
34.00
24.00
24.00