SI3461-KIT Silicon Laboratories Inc, SI3461-KIT Datasheet - Page 7

• 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

Table 4. Selected Electrical Specifications (Si3461-EVB)
2.1. Si3461-EVB Performance Characteristics
When implemented according to the recommended external component and layout guidelines for the Si3461-EVB,
the Si3461 enables the following performance specifications in single-port PSE applications. Refer to the Si3461-
EVB User's Guide and schematics for details.
Description
Power Supplies
V
Range
V
Voltage
V
Voltage
VDD Supply Voltage
Range
Output Supply
Voltage
Supply Current
Detection Specifications
Detection Voltage
Detection Current
Minimum Signature
Resistance
Maximum Signature
Resistance
Classification Specifications
Classification Voltage
Classification Cur-
rent Limit
Notes:
IN
IN
IN
1. Typical specifications are based on an ambient operating temperature of 25 °C and VIN = +50 V unless otherwise
2. Absolute classification current limits are configurable. See “5.2. Classification” and "5.3. Power-Up" on page 13.
3. Typical ICUT values are adjusted according to the input voltage to provide power limiting with approximately 5% margin
4. Overload current is within limits, typically in less than 1 ms.
Input Supply
Input UVLO
Input OVLO
specified.
against the 802.3 requirements. The maximum ICUT values are consistent with the IEEE requirement that Icut
maximum is less than 400 mA at the minimum allowed Vout of 44 V or 684 mA for PoE+ mode at the minimum allowed
Vout of 50 V.
R
Symbol
R
V
I
UVLO
OVLO
DETmax
V
V
CLASS
DETmin
V
I
CLASS
V
DET
OUT
I
DET
DD
IN
IN
(not including shunt regulator)
Current into the V
voltage at V
0 mA < I
Measured with 100 
Test Conditions
Detection point 1
Detection point 2
Detection point 3
I
ambient range
OVLO turn-off
Si3461 supply
–40 to +85 °C
UVLO turn-off
voltage at V
voltage at V
voltage range
OUT
across V
Short circuit
PSE output
CLASS
= 350 mA
IN
= 50 V and
OUT
Rev. 1.0
< 45 mA
DD
IN
IN
node
3.15
26.5
Min
15.5
45
57
15
55
—
—
—
—
—
Typ
3.3
8.0
4.0
8.0
4.0
50
60
49
17
29
—
75
—
42
1
Si3461
Max
3.45
10.5
20.5
57
45
19
33
95
—
—
—
3
Unit
mA
mA
mA
k
k
V
V
V
V
V
V
V
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