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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LT4295 датащи(PDF) 1 Page - Analog Devices |
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LT4295 датащи(HTML) 1 Page - Analog Devices |
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1 / 50 page  LTC9101-1/ LTC9102/LTC9103 1 Rev. 0 For more information www.analog.com Document Feedback n PoE PSE Switches/Routers and Midspans APPLICATIONS 48-Port IEEE 802.3bt PoE PSE Controller The LTC®9101-1/LTC9102/LTC9103 chipset is a 48-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 2, 802.3bt Type 3 and 4 compliant Power over Ethernet (PoE) systems. The LTC9101-1/LTC9102/ LTC9103 is designed to power compliant 802.3af, 802.3at, and 802.3bt PDs. The LTC9101-1/LTC9102/LTC9103 chip- set delivers lowest-in-industry heat dissipation by utilizing low-RDS(ON) external MOSFETs and 0.1Ω sense resistance per power channel. A transformer-isolated communication protocol replaces expensive opto-couplers and complex iso- lated 3.3V supply, resulting in significant BOM cost savings. Advanced power management features include per-port 14-bit current/power monitoring, programmable current/ power limits, and versatile fast shut-down of preselected ports. An advanced power management host software layer is available. PD detection uses a proprietary multi- point detection mechanism ensuring excellent immunity from false PD identification. Autoclass and 5-event physi- cal classification are supported. The LTC9101-1/LTC9102/ LTC9103 includes an I2C serial interface operable up to 1MHz. The LTC9101-1/LTC9102/LTC9103 is pin or I2C pro- grammable to negotiate PD delivered power up to 71.3W. n Fully Compliant IEEE 802.3bt Type 3 and 4 PSE n Fully Compliant IEEE 802.3at Type 2 PSE n Software-Compatible with LTC4291-1/LTC4292 n Up to 48 PSE Ports with One Power Channel per Port n Up to 24 PSE Ports with Two Power Channels per Port n ECC-Protected eFlash and Data RAMs n Low Power Path Dissipation per Channel n 100mΩ Sense Resistance n 30mΩ or Lower MOSFET RDS(ON) n Chipset Provides Electrical Isolation n Eliminates Optos and Isolated 3.3V Supply n Very High Reliability Multipoint PD Detection n Connection Check Distinguishes Single- Signature and Dual-Signature PDs n Continuous Per-Port Power and Current Monitoring n 1MHz I2C Compatible Serial Control Interface n Pin or I2C Programmable PD Power n Available in 24-Lead 4mm × 4mm (LTC9101-1) and a 64-Lead 7mm × 11mm (LTC9102/LTC9103) QFN Packages All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION FEATURES ID:11b ID:10b ID:01b VEE >47µF 0.1µF 100V S1B 0.1µF 1µF 100V CPA CNA DPA DNA VEE SENSE1 GATE1 AGND LTC9102/LTC9103 1000BASE-T OUT1 SENSE2 VSSK2 GATE2 OUT2 TX1 TX2 TX3 TX4 RJ45 1 2 6 4 3 5 7 8 VEE VEE VEE RESET SCL SDAIN CFG2 CFG1 CFG0 DGND DPD CND VDD LTC9101-1 CPD DND ISOLATION AD2 AD3 SDAOUT AUTO 4PVALID MSD INT 3.3V (NO I2C ISOLATION REQUIRED) VEE ONE 4-PAIR PORT SHOWN ID:00b 0.1 VEE VSSK1 0.1 FLASH 0.1µF 100V S1B 1000pF 2kV • • • • 1 2 3 4 9101123 TA01a DESCRIPTION |
Аналогичный номер детали - LT4295 |
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Аналогичное описание - LT4295 |
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