L5991A(1999) Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
L5991A Datasheet PDF : 19 Pages
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L5991 - L5991A
Figure 9. Vref SVRR vs. switching frequency.
SVRR (dB)
120
Vcc=15V
Vp-p=1V
80
40
Figure 10. Output saturation.
Vsat = V [V]
10
16
14
Vcc = Vc = 15V
Tj = 25°C
12
10
8
0
1
10
100
1000
fsw (Hz)
Figure 11. Output saturation.
Vsat = V [V]
10
2.5
10000
2
Vcc = Vc = 15V
Tj = 25°C
1.5
6
0
0.2
0.4
0.6
0.8
1
1.2
Isource [A]
Figure 12. UVLO Saturation
Ipin10 [mA]
50
40
Vcc < Vccon
before turn-on
30
1
20
0.5
10
0
0
0.2 0.4 0.6 0.8 1
1.2
Isink [A]
Figure 13. Timingresistor vs.switchingfrequency.
fsw (KHz)
5000
2000
1000
500
200
100
50
20
10
6/23
Vcc = 15V, V15 =0V
Tj = 25°C
5 .6nF
2.2nF
100pF
220pF
470pF
1 nF
10
20
30
40
Rt (kohm)
0
0 200 400 600 800 1,000 1,200 1,400
Vpin10 [mV]
Figure 14. Switching frequency vs. tempera-
ture.
fsw (KHz)
320
R t= 4.5Kohm, C t = 1nF
310
Vcc = 15V, V15=Vref
300
290
280
-50 -25 0
25 50 75
Tj (°C)
100 125 150
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