L9903 データシートの表示（PDF） - STMicroelectronics
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L9903 Datasheet PDF : 17 Pages
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L9903
Figure 8. Charging time of an external capacitor of 10nF connected to CP pin at VVS=8V and
VVS=13.5V
voltage [V]
30
25
Charging time of a 10nF load at CP
CP for VS=13.5V
20
CP for VS=8V
15
10
EN
5
0
0
1
2
3
4
time [ms]
Figure 9. Application Circuit Diagram
VBAT
Voltage
Regulator
VCC
µC
GND
D1
CS1
VS 10
CS2
ST 1
-
+
= VSTH
Reference
BIAS
fST
VCC
Charge
pump
VCC Overvoltage
RDG
DG 2
Undervoltage
Thermal shutdown
EN 4
REN
V S1TH =
DIR 5
PWM 3
RDIR
VCC
R PWM
PR 6
Timer
CPR RPR
RX 7
TX 8
R RX
VCC
R TX
V S2TH =
ISO-I nterf ace
= 0.5 • VVS
I KH
RCP
11 CP
13 CB1
12 GH1
14 S1
RS1
19 GL1
RGL1
18 GL2
RGL2
17 S2
RS2
15 GH2
16 CB2
9K
20 GND
R
CB1
R
R
CB2
R
C1
M
K-Line
10/17
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