LTC4291-1中文资料PDF规格书
LTC4291-1规格书详情
DESCRIPTION
The LTC®9101-2 chipset is a 12/24-port power sourcing
equipment (PSE) controller designed for use in IEEE 802.3bt
Type 3 and 4 compliant Power over Ethernet (PoE) systems.
The LTC9101-2/LTC9102 is designed to power compliant
802.3af, 802.3at, and 802.3bt PDs. The LTC9101-2/LTC9102
chipset 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 isolated
3.3V supply, resulting in significant BOM cost savings.
Advanced power management features include per-port
14‑bit current/voltage monitoring, programmable power
limits, and versatile fast shut down of preselected ports.
An advanced power management host software layer is
available. PD detection uses a proprietary multipoint detection
mechanism ensuring excellent immunity from false PD
identification. Autoclass and 5-event physical classification
are supported. The LTC9101-2/LTC9102 includes an
I2C serial interface operable up to 1MHz. The LTC9101-2/
LTC9102 is pin or I2C programmable to negotiate PD delivered
power up to 71.3W.
FEATURES
- Fully Compliant IEEE 802.3bt Type 3 and 4 PSE
- Up to 24 PSE Ports with Two Power Channels per Port
- +80V/–20V Tolerant Port-Facing Pins
- ECC-Protected eFlash and Data RAMs
- Low Power Path Dissipation per Channel
- 100mΩ Sense Resistance
- 30mΩ or Lower MOSFET RDS(ON)
- Chipset Provides Electrical Isolation
- Eliminates Optos and Isolated 3.3V Supply
- Very High Reliability Multipoint PD Detection
- Connection Check Distinguishes Single-
Signature and Dual-Signature PDs
- Continuous Per-Port Voltage and Current Monitoring
- 1MHz I2C Compatible Serial Control Interface
- Pin or I2C Programmable PD Power
- Available in a 24-Lead 4mm × 4mm (LTC9101‑2) and
64-Lead 7mm × 11mm (LTC9102) QFN Packages
APPLICATIONS
- PoE PSE Switches/Routers and Midspans
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ADI/亚德诺 |
22+ |
QFN |
100000 |
代理渠道/只做原装/可含税 |
询价 | ||
ADI/亚德诺 |
20+ |
24-LeadQFN(4mmx4mmx0 |
33680 |
ADI全新原装-可开原型号增税票 |
询价 | ||
ADI/亚德诺 |
23+ |
QFN |
89630 |
当天发货全新原装现货 |
询价 | ||
LINEAR/凌特 |
18+ |
QFN |
24415 |
全新原装现货,可出样品,可开增值税发票 |
询价 | ||
LT |
QFN-24 |
210264 |
一级代理原装正品,价格优势,支持实单! |
询价 | |||
ADI/亚德诺 |
2019+ |
QFN-24 |
30000 |
询价 | |||
LINEAR |
18+ |
QFN |
54 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
LT |
23+ |
NA/ |
6550 |
原装现货,当天可交货,原型号开票 |
询价 | ||
LT |
24+23+ |
QFN-24 |
12580 |
16年现货库存供应商终端BOM表可配单提供样品 |
询价 | ||
LINEAR |
23+ |
QFN |
2554 |
原厂原装正品 |
询价 |