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SI3402-B

Silicon Laboratories
Part Number SI3402-B
Manufacturer Silicon Laboratories
Description FULLY-INTEGRATED 802.3-COMPLIANT POE PD INTERFACE AND LOW-EMI SWITCHING REGULATOR
Published Feb 29, 2016
Detailed Description Si3402-B FULLY-INTEGRATED 802.3-COMPLIANT POE PD INTERFACE AND LOW-EMI SWITCHING REGULATOR Features  Pin-compatible ...
Datasheet PDF File SI3402-B PDF File

SI3402-B
SI3402-B

Overview
Si3402-B FULLY-INTEGRATED 802.
3-COMPLIANT POE PD INTERFACE AND LOW-EMI SWITCHING REGULATOR Features  Pin-compatible replacement for the obsolete Si3402-A  IEEE 802.
3 standard-compliant solution, including pre-standard (legacy) PoE support  Highly-integrated IC enables compact solution footprints Minimal external components Integrated diode bridges and transient surge suppressor Integrated switching regulator controller with on-chip power FET Integrated dual current-limited hotswap switch  Programmable classification circuit  Incorporates switcher EMIreduction techniques.
 Supports non-isolated and isolated switching topologies  Comprehensive protection circuitry Transient overvoltage protection Undervoltage lockout Early power-loss indicator Thermal shutdown protection Foldback current limiting  Low-profile 5 x 5 mm 20-pin QFN  RoHS-compliant Applications  Voice over IP telephones and adapters  Wireless access points  Security cameras Description  Point-of-sale terminals  Internet appliances  Network devices  High power applications The Si3402 integrates all power management and control functions required in a Power-over-Ethernet (PoE) powered device (PD) application.
The Si3402 converts the high voltage supplied over the 10/100/1000BASE-T Ethernet connection into a regulated, low-voltage output supply.
The optimized architecture of the Si3402 minimizes the solution footprint, reduces external BOM cost, and enables the use of low-cost external components while maintaining high performance.
The Si3402 integrates the required diode bridges and transient surge suppressor, thus enabling direct connection of the IC to the Ethernet RJ-45 connector.
The switching power FET and all associated functions are also integrated.
The integrated switching regulator supports isolated (flyback) and nonisolated (buck) converter topologies.
The Si3402 supports IEEE 802.
3at Type 1 Powered Device applications.
Standard external resistors connecte...


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