MAX5945 MAXIM [Maxim Integrated Products], MAX5945 Datasheet - Page 40

• Manufacturer Part Number: MAX5945
• Description: Quad Network Power Controller for Power-Over-LAN
• Manufacturer: MAXIM [Maxim Integrated Products]

Quad Network Power Controller
for Power-Over-LAN
Figure 17. -48V to +3.3V (300mA) Boost Converter Solution for V
Figure 18. Layout Example for Boost Converter Solution for V
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GND
-48V
0.47µF
100V
C6
-48V
GND
1700 (mils)
Q4
MMBTA56
15nF
C3
1
2
3
4
C2
0.022µF
V+
V
FB
SS_SHDN
DD
R10
2Ω
1Ω
R6
MAX5020
1kΩ
R5
NDRV
GND
V
CS
CC
8
7
6
5
68µH, DO3308P-683
DIG
1700 (mils)
C1
0.1µF
L1
DIG
30Ω
R8
GATE
C8
2.2µF
SOURCE
DRAIN
Q1
Si2328 DS
R4
1Ω
DIODES INC.: B1100
Sanyo 6SPS220M
4.7µH
C9
D1
R9
1Ω
220µF
C4
C7
0.22µF
R7
1.02kΩ
MMBTA56
2.6kΩ
1700 (mils)
R1
Q2
R2
6.81kΩ
Q3
MMBTA56
+3.3V
R3
2.61kΩ
C5
4.7µF
300mA
+3.3V
GND