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SI3452-B01-GM
SI3452-B01-GM - Brand New SILICON LABS Power Over Ethernet Controllers
Credit Card - One-month free return and one year warranty.
- Full or Partial Refund, if the item is not as described
- Full Refund if you don't receive your order
Description
The Si3454 is a fully-programmable, four-port power management controller for IEEE 802.3 compliant Power Sourcing Equipment (PSE). Designed for use in PSE endpoint (switches), the Si3454 integrates four independent ports, each with IEEE-required powered device (PD) detection and classification functionality. In addition, the Si3454 features a fully-programmable architecture that enables powered device (PD) disconnect using a dc sense algorithm, a robust multipoint detection algorithm, software-configurable per-port current and voltage monitoring, and programmable current limits to support the IEEE 802.3at standard. Intelligent protection circuitry includes input undervoltage detection, output current limit, and short-circuit protection. The Si3454 operates by host processor control through a three-wire, I2C-compatible serial interface. Independent serial data input and output pins enable high voltage isolation through external isolators. An interrupt pin is used to alert the host processor of various status and fault conditions. The device also supports a pin-selectable AUTO mode for autonomous operation, without the need for a host processor. The Si3454 also features an onchip dc-dc converter for creating the digital voltage rail from the PoE voltage, thus enabling single- rail power operation.
Features
■ Quad-Port Power Sourcing Equipment (PSE) controller
■ IEEE 802.3at Type I and II compliant
■ Port priority shutdown control
■ Adds enhanced features for maximum design flexibility:
• Per-port current and voltage monitoring
• PoE Plus support with programmable current limits
• Multi-point detection
• Programmable power MOSFET gate drive control
• Configurable watchdog timer enables failsafe operation
■ Maskable interrupt pin
■ Comprehensive fault protection circuitry includes:
• Power undervoltage lockout
• Output current limit and short circuit protection
• Thermal overload detection
■ Supports pin-selectable AUTO mode
■ Extended operating temp range: –40 to +85 °C
■ 5x7 mm 38-pin QFN package (RoHS-compliant)
■ On-chip dc-dc converter enables single-rail power operation
Applications
■ IEEE Power Sourcing Equipment (PSE)
■ Power over Ethernet (PoE) Switches
■ IP Phone Systems
■ Smartgrid Switches
■ Ruggedized and Industrial Switches
Shipping
| First item | Additional item | Service | Description |
|---|---|---|---|
| $0.00 | Free | Free Shipping | Estimated 15-30 business days via Registered Air Mail or others |
| $27.50 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
| $0.00 | Free | Buyer cooperating carrier | Using buyer's cooperating carrier. Buyer should create a shipping label and share it to us. And then we will call carrier for pickup |
| $38.00 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
Delivery
- The transportation time may be delayed due to customs clearance, local holidays or abnormal events.
- The estimated time is based on the fastest speed provided by commercial couriers (DHL, FedEx, UPS etc).
- The estimated time does not include the lead time of the item. The lead time of most items is 2–5 business days. If more than 5 working days are needed, we will manually confirm with you.
| Flag | Country | Express Delivery | Standard Delivery |
|---|---|---|---|
 | United States | 3 - 5 days | 10-15 days |
 | Canada | 3 - 5 days | 10-20 days |
 | Mexico | 3 - 5 days | 10-17 days |
 | Germany | 3 - 5 days | 10-12 days |
 | Italy | 3 - 5 days | 10-15 days |
 | United Kingdom | 3 - 5 days | 10-12 days |
Estimated Delivery
This item requires 2-5 business days for processing before shipping after payment is confirmed. And depending on the destination and shipping method.
Return Policy
| Return window | Refund type | Return shipping |
|---|---|---|
| 60 days after receiving item | Money Back or Replacement | Buyer pays for return shipping |
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