l6590a STMicroelectronics, l6590a Datasheet - Page 6

• Manufacturer Part Number: l6590a
• Description: Fully Integrated Power Supply
• Manufacturer: STMicroelectronics

L6590A
Figure 1. Start-up & UVLO Thresholds
Figure 2. Start-up Current Generator
Figure 3. Start-up Current Generator
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Icc [mA]
5.5
4.5
3.5
Icc [mA]
5.5
4.5
3.5
Vcc [V]
15
14
13
10
12
11
9
8
7
6
5
4
3
5
4
3
-50
0
0
2
2
0
4
4
Vdrain = 40 V
Vdrain = 60 V
Vcc [V]
Vcc [V]
Tj [°C]
50
6
6
8
8
100
Tj = 125 °C
Tj = 125 °C
Tj = -25 °C
Tj = -25 °C
Tj = 25 °C
Tj = 25 °C
10
10
150
12
12
Figure 4. IC Consumption Before Start-up
Figure 5. IC Quiescent Current
Figure 6. IC Operating Current
Icc [µA]
700
600
500
400
300
200
100
Icc [mA]
3.8
3.6
3.4
3.2
Icc [mA]
4.5
3.5
4
3
5
4
3
6
7
7
Tj = 125 °C
Tj = -25 °C
MOSFET switching @ 65 kHz
MOSFET disabled
Tj = 125 °C
8
8
8
9
9
10
10
10
Vcc [V]
Vcc [V]
Vcc [V]
12
11
11
12
12
14
Tj = -25 °C
Tj = 25 °C
13
13
Tj = 125 °C
Tj = 25 °C
Tj = -25 °C
Tj = 25 °C
16
14
14
15
18
15