SI3461-KIT Silicon Laboratories Inc, SI3461-KIT Datasheet - Page 26

• 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
12. BOM Component Considerations
To achieve optimal performance and full-specification compliance, Silicon Labs strongly encourages the use of the
components and vendor part numbers listed in “10. Si3461-EVB Bill of Materials”. If alternate components must be
substituted, note the following recommendations for components in the power section.
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Other component considerations:
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Diode D6 must not clamp at 57 V and must clamp to <100 V under worst-case surge conditions.
Heat dissipating components must be separated from each other and moved away from components that are
heat-sensitive.
Headers J10 and J11 are used for development purposes only. The Si3461 is not user-programmable, and it is
not recommended that these components be included in actual layouts.
The operating mode setting DIP switch and its associated resistors are probably not needed in a custom
design. Replace them with a suitable voltage divider consisting of two resistors (preferably with a resulting
2.0 k parallel resistance).
Diode D1 protects the circuit from accidental polarity reversal. It may not be needed.
The reset push button and its associated components (R2 and C5) are optional. If not needed, tie the /RST
input high.
A much higher-efficiency external supply may be substituted for the 3.3 V shunt regulator.
Rev. 0.5