L6590A データシートの表示（PDF） - STMicroelectronics
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L6590A Datasheet PDF : 19 Pages
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Figure 7. IC Operating Current
Icc [mA]
4.4
MOSFET switching @ 22 kHz
4.2
Tj = 125 °C
4
Tj = 25 °C
3.8
3.6
Tj = -25 °C
3.4
3.2
3
7 8 9 10 11 12 13 14 15
Vcc [V]
Figure 8. Switching Frequency vs.
Temperature
fsw [kHz]
80
70
Normal operation
60
50
40
30
Standby
20
10
-50
0
50
100
150
Tj [°C]
Figure 9. Vcc clamp vs. Temperature
VCCclamp [V]
18
17.8
17.6
Iclamp = 20 mA
17.4
17.2
Iclamp = 10 mA
17
-50
0
50
100
150
Tj [°C]
L6590A
Figure 10. OVP Threshold vs. Temperature
Vth [V]
16
15.8
15.6
15.4
15.2
15
-50
0
50
100
150
Tj [°C]
Figure 11. OCP Threshold vs. Current Slope
Ipklim / (Ipklim @ di/dt = 120 mA/µs)
1.06
1.04
Tj = 25 °C
1.02
1
0.98
0.96
50
100
150
200
250
dI/dt [mA/µs]
Figure 12. OCP threshold vs. Temperature
Ipklim / (Ipklim @ Tj = 25°C)
1.1
1.08
di/dt = 120 mA/µs
1.06
1.04
1.02
1
0.98
-50
0
50
100
150
Tj [°C]
7/19
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