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AN3399 Datasheet(PDF) 4 Page - STMicroelectronics

Part # AN3399
Description  L99PM62GXP external voltage regulation
PDF  24 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3399 Datasheet(HTML) 4 Page - STMicroelectronics

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List of figures
AN3399
4/24
Doc ID 018824 Rev 2
List of figures
Figure 1.
Voltage regulation with external PNP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2.
Voltage regulation with external NPN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3.
Voltage regulation and current limitation with external PNP . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4.
Voltage regulation and current limitation with external NPN. . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 5.
Removing residual current by turning L99PM62GXP in standby mode . . . . . . . . . . . . . . . . 9
Figure 6.
V3 to VS dependence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 7.
V3 to I3 dependence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 8.
Screenshot of load regulation (from 0 to 220 mA - current limitation). . . . . . . . . . . . . . . . . 12
Figure 9.
V3 switch ON / OFF (I3 = 0 mA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 10.
V3 switch ON /OFF (I3 = 200 mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 11.
V3 switch ON /OFF to shortcut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 12.
Load switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 13.
Combination n°1 - I3 = 0; I3 = 200 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 14.
Combination n°1 - Ci = 0; C1 = 0; load switch ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 15.
Combination n°2 - I3 = 0; Ci = 1 nF; C1 = 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 16.
Combination n°2 - I3 = 200 mA; Ci = 1 nF; C1 = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 17.
Combination n°2 - Ci = 1 nF; C1 = 0; load switch ON/OFF. . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 18.
Combination n°3 - I3 = 0; Ci = 10 nF; C1 = 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 19.
Combination n°3 - I3 = 200 mA; Ci = 10 nF; C1 = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 20.
Combination n°3 - Ci = 10 nF; C1 = 0; load switch ON/OFF. . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 21.
Combination n°5 - I3 = 0; Ci = 1 nF; C1 = 10 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 22.
Combination n°5 - I3 = 200 mA; Ci = 1 nF; C1 = 10 µF. . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 23.
Combination n°5 - Ci = 1 nF; C1 = 10 µF; load switch ON/OFF . . . . . . . . . . . . . . . . . . . . . 18
Figure 24.
Combination n°6 - I3 = 0; Ci = 10 nF; C1 = 10 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 25.
Combination n°6 - I3 = 200 mA; Ci = 10 nF; C1 = 10 µF . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 26.
Combination n°6 - Ci = 10 nF; C1 = 10 µF; load switch ON/OFF . . . . . . . . . . . . . . . . . . . . 19
Figure 27.
VS cranking (1 ms pulse) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 28.
VS cranking (pulse 2 ms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 29.
VS cranking (pulse 5 ms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21



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