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ISL70003ASEH Datasheet, PDF (17/36 Pages) Intersil Corporation – Radiation and SEE Tolerant 3V to 13.2V, 9A Buck Regulator
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ISL70003ASEH
Typical Performance Curves Unless otherwise noted, Test platform is the ISL70003ASEHEV1Z where VIN = 12V,
VOUT = 3.3V, IOUT = 3A, fSW = 500kHz, CIN = 4x 100µF + 5x1µF, LOUT = 3.3µH, COUT = 1x 150µF + 1µF, TCASE = +25°C, All outputs active. (Continued)
100
100
95
95
90
85
80 TC = +125°C
90
85
TC = -55°C
80
75
TC = +25°C
TC = +85°C
TC = -55°C
70
65
60
0
1
2
3
4
5
6
7
8
9
LOAD CURRENT (A)
75
TC = +125°C
70
TC = +25°C
65
TC = +85°C
60 0
1
2
3
4
5
6
7
8
9
LOAD CURRENT (A)
FIGURE 18. EFFICIENCY vs LOAD, VIN = 3.3V, VOUT = 2.5V, 300kHz
FIGURE 19. EFFICIENCY vs LOAD, VIN = 3.3V, VOUT = 1.2V, 500kHz
6
5
4
5VOUT
3
2
0.9VOUT
1
00
1
2
3
4
5
6
7
8
9
LOAD CURRENT (A)
FIGURE 20. POWER LOSS, VIN = 12V, 300kHz
7
6
5
5VOUT
4
3
2
0.9VOUT
1
00
1
2
3
4
5
6
7
8
9
LOAD CURRENT (A)
FIGURE 21. POWER LOSS, VIN = 12V, 500kHz
6
5
4
2.5VOUT
3
0.9VOUT
2
1
0
0
1
2
3
4
5
6
7
8
9
LOAD CURRENT (A)
FIGURE 22. POWER LOSS, VIN = 3.3V, 300kHz
6
5
4
2.5VOUT
3
0.9VOUT
2
1
00
1
2
3
4
5
6
7
8
9
LOAD CURRENT (A)
FIGURE 23. POWER LOSS, VIN = 3.3V, 500kHz
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FN8746.0
August 5, 2015
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