B&B Electronics RS-232 to Ethernet Converter ES1A Especificaciones Pagina 23

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Si3216
Rev. 1.0 23
Not Recommended
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r N
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Figure 13. Si321x BJT/Inductor DC-DC Converter Circuit
R1,R3 200 k, 1/10 W, 1%
R2,R4,R5,
R102,R104,R105
100 k
, 1/10 W, 1%
R6,R7 80.6
, 1/4 W, 1%
R8,R9 4.7 k
, 1/10 W, 1%
R10,R11 10
, 1/10 W, 5%
R12,R13 5.1 k
, 1/10 W, 5%
R14,R26* 40.2 k
, 1/10 W, 1%
R15 243
, 1/10 W, 1%
R21 15
, 1/4 W, 1%
R28,R29 1/10 W,
1% (See “AN45: Design Guide for The
Si3210 DC-DC Converter” or Table 18 for value
selection)
R32* 10 k
, 1/10 W, 5%
*Note: Only one component is necessary on each signal in the system.
Table 14. Si3216(M) External Component Values (Continued)
Q8
2N2222
Q7
FZT953
D1
ES1D
C9
10 µF
C25
2
10 µF
C10
0.1 µF
R19
1
R20
1
R18
1
R16
200
R17
F1
SDCH
SDCL
DCFF
DCDRV
GND
L1
VBAT
C14
2
0.1 µF
VDC
Note 1
Note 1
Si321x
Notes:
1. Values and configurations for these components can be derived
from Table 20 or from “AN45: Design Guide for the Si3210/15/16
DC-DC Converter”.
2. Voltage rating for C14 and C25 must be greater than VDC.
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