SI3400-E1-GM Silicon Laboratories Inc, SI3400-E1-GM Datasheet - Page 8

• Manufacturer Part Number: SI3400-E1-GM
• Description: IC POWER OVER ETHERNET 20QFN
• Manufacturer: Silicon Laboratories Inc
• Type: Power over Ethernet Switch (PoE)r

Specifications of SI3400-E1-GM

• Package / Case: 20-QFN
• Applications: IP Phones, Power over LAN, Network Routers and Switches
• Internal Switch(s): Yes
• Current Limit: 525mA
• Voltage - Supply: 2.8 V ~ 57 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1326 - KIT REF DESIGN PWR OVER ETHERNET
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1385; SI3400-E-GM

Si3400/Si3401
2. Typical Application Schematics
*Note: This is a simplified schematic. See “AN296:
8
Item
RJ-45
C1
C2
C3
C4
C5
C6
C7
R1
R2
R3
R4
D1
L1
Designs”
Ethernet PHY
To
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
for more details and complete application schematics.
Resistor
Resistor
Resistor
Resistor
Inductor
Diode
Type
C2
Figure 1. Schematic—Class 0 with Non-Isolated 5 V Output*
Table 7. Component Listing—Class 0 with 5 V Output
C1
1000 µF
25.5 kΩ
7.32 kΩ
2.87 kΩ
30.1 kΩ
150 pF
0.1 µF
0.1 µF
0.1 µF
3.3 nF
Value
33 µH
15 µF
R1
CT1
CT2
SP1
SP2
RDET
RCL
Using the Si3400/01 PoE PD Controller in Isolated and Non-Isolated
Toler.
20%
20%
20%
20%
10%
10%
10%
20%
1%
1%
1%
1%
Rev. 0.9
Si3400
Si3401
C5
1/16 W
1/16 W
1/16 W
1/16 W
Rating
100 V
100 V
100 V
3.5 A
10 V
16 V
16 V
16 V
16 V
EROUT
SWO
Switcher supply capacitor. Several paral-
lel capacitors are used for lower ESR.
PD input supply capacitor.
Switcher load capacitor - 1000 µF in par-
allel with and X5R 22 µF for lower ESR.
VDD bypass capacitor.
Softstart capacitor.
Compensation capacitor.
Compensation capacitor.
Detection resistor.
Feedback resistor divider.
Feedback resistor divider.
Feedback compensation resistor.
Schottky diode; part no. PDS5100.
Coilcraft part no. DO5010333.
FB
C6
R4
D1
C4
L1
C7
R3
R2
Notes
C3