SI3461-KIT Silicon Laboratories Inc, SI3461-KIT Datasheet - Page 2

• Manufacturer Part Number: SI3461-KIT
• Description: BOARD EVAL FOR SI3461
• Manufacturer: Silicon Laboratories Inc
• Type: Controllers & Processorsr

Specifications of SI3461-KIT

• Main Purpose: Special Purpose DC/DC, Power Over Ethernet
• Board Type: Fully Populated
• Utilized Ic / Part: Si3461
• Ethernet Connection Type: 10/100 Base-T, IEEE 802.3
• Interface Type: Ethernet
• Operating Voltage: 12 V to 15 V
• Operating Current: 10 mA
• Product: Modules
• For Use With/related Products: Si3460
• Lead Free Status / RoHS Status: Lead free / RoHS non-compliant
• Current - Output: -
• Voltage - Output: -
• Voltage - Input: -
• Power - Output: -
• Frequency - Switching: -
• Outputs And Type: -
• Regulator Topology: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1843

Si3461-EVB
3. Connectors and Switches
The Si3461-EVB is equipped with two banana jacks and an optional third banana jack on one side and two RJ-45
connectors on the other side.
The board receives power through the banana jacks:



An optional onboard +3.3 V shunt regulator generates the supply voltage for the Si3461 from the +50 V input
voltage. The +3.3 V supply voltage may also be provided by an external source through the optional banana jack if
higher efficiency is desired. In this case, the regulator and its associated resistors (including the series resistors)
should be removed.
The RJ-45 Ethernet connectors:


Reset pushbutton:

Mode setting DIP switch:

Refer to "6.1. Initialization and Operating Mode Configuration" on page 7 for more details.
2
J1
J2
J3
J7
J8
SW1
SW2 These switches set the operating mode according to Table 2 on page 7 including the following:



Available power level (4 W, 7 W, 15.4 W, and 30 W)
Midspan or Endpoint configuration
Automatic restart or restart after disconnection modes of operation
BLACK banana jack:
RED banana jack:
Optional banana jack:
ETHERNET IN
PoE
Figure 2. Placement of Connectors and Switches
GND
+50 V nominal input (+45 V to +57 V) for PoE;
+54 V nominal input (+51 V to +57 V) for PoE+
+3.3 V input
input
output
Rev. 0.5