ADI LTC4270CIUKG#PBF
| Manufacturer | |
| MPN | LTC4270CIUKG#PBF |
| LCSC Part # | C687913 |
| Packaging | QFN-52-EP(7x8) |
| Customer # | |
| Key Attributes | Power Sourcing Equipment (PSE) 13W QFN-52-EP(7x8) Power Over Ethernet (PoE) Controllers RoHS |
| Datasheet |  ADI LTC4270CIUKG#PBF |
Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Power Over Ethernet (PoE) Controllers | |
| Manufacturer | ADI | |
| Packaging | QFN-52-EP(7x8) | |
| Features | Overvoltage protection;Undervoltage Protection;Thermal Protection;Overcurrent Protection;PD detection and disconnect identification;Dual event classification detection | |
| Type | Power Sourcing Equipment (PSE) | |
| Operating Temperature | -40℃~+85℃ | |
| number of channels | 12 | |
| Power - Max | 13W |
Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 45 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
The LTC4270/LTC4271 chipset is a 12-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 1 and Type 2 (high power) compliant Power over Ethernet (PoE) systems. Transformer-isolated communication protocol replaces expensive opto-couplers and complex isolated 3.3V supply resulting in significant BOM cost savings. The LTC4270/LTC4271 chipset delivers lowest-in-industry heat dissipation by utilizing low-RDS(ON) external MOSFETs and 0.25Ω sense resistors. Advanced power management features include per-port 12-bit current monitoring ADCs, DAC-programmable current limit, and versatile fast shut-down of preselected ports. Advanced power management host software is available under a no-cost license. PD discovery uses a proprietary dual-mode 4-point detection mechanism ensuring excellent immunity from false PD detection. Midspan PSEs are supported with 2-event classification and a 2 second backoff timer. The LTC4270/LTC4271 includes an I2C serial interface operable up to 1MHz. The LTC4270/LTC4271 is available in multiple power grades allowing delivered PD power up to 90W.
Features
- 12 Independent PSE Channels
- Compliant with IEEE 802.3at Type 1 and 2
- Chipset Provides Electrical Isolation Reduced BOM Cost Eliminates up to 6 High Speed Opto-Couplers Eliminates Isolated 3.3V Power Supply
- Low Power Dissipation 0.25Ω Sense Resistance Per Channel
- Very High Reliability 4-Point PD Detection
- 2-Point Forced Voltage
- 2-Point Forced Current
- VEE and VPORT Monitoring
- 1 Second Rolling IPORT Averaging
- Supports 2-Pair and 4-Pair Output Power
- 1MHz I²C Compatible Serial Control Interface
- Available In Three Power Grades
- A-Grade – LTPoE++ 38.7W to 90W
- B-Grade – PoE+ 25.5W
- C-Grade – PoE 13W
- Available In 52-Lead 7mm × 8mm (LTC4270) and 24‑Lead 4mm × 4mm (LTC4271) QFN Packages
Applications
- PoE PSE Switches/Routers
- PoE PSE Midspans
| Qty | Unit Price(Reference Only) | Total Amount |
|---|---|---|
| 1+ | $ 16.3608 | $ 16.36 |
| 200+ | $ 6.3314 | $ 1266.28 |
| 500+ | $ 6.1091 | $ 3054.55 |
| 1,000+ | $ 5.9995 | $ 5999.50 |
Standard Packaging45/Full Tube | ||
Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Power Over Ethernet (PoE) Controllers | |
| Manufacturer | ADI | |
| Packaging | QFN-52-EP(7x8) | |
| Features | Overvoltage protection;Undervoltage Protection;Thermal Protection;Overcurrent Protection;PD detection and disconnect identification;Dual event classification detection | |
| Type | Power Sourcing Equipment (PSE) | |
| Operating Temperature | -40℃~+85℃ | |
| number of channels | 12 | |
| Power - Max | 13W |
Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 45 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
The LTC4270/LTC4271 chipset is a 12-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 1 and Type 2 (high power) compliant Power over Ethernet (PoE) systems. Transformer-isolated communication protocol replaces expensive opto-couplers and complex isolated 3.3V supply resulting in significant BOM cost savings. The LTC4270/LTC4271 chipset delivers lowest-in-industry heat dissipation by utilizing low-RDS(ON) external MOSFETs and 0.25Ω sense resistors. Advanced power management features include per-port 12-bit current monitoring ADCs, DAC-programmable current limit, and versatile fast shut-down of preselected ports. Advanced power management host software is available under a no-cost license. PD discovery uses a proprietary dual-mode 4-point detection mechanism ensuring excellent immunity from false PD detection. Midspan PSEs are supported with 2-event classification and a 2 second backoff timer. The LTC4270/LTC4271 includes an I2C serial interface operable up to 1MHz. The LTC4270/LTC4271 is available in multiple power grades allowing delivered PD power up to 90W.
Features
- 12 Independent PSE Channels
- Compliant with IEEE 802.3at Type 1 and 2
- Chipset Provides Electrical Isolation Reduced BOM Cost Eliminates up to 6 High Speed Opto-Couplers Eliminates Isolated 3.3V Power Supply
- Low Power Dissipation 0.25Ω Sense Resistance Per Channel
- Very High Reliability 4-Point PD Detection
- 2-Point Forced Voltage
- 2-Point Forced Current
- VEE and VPORT Monitoring
- 1 Second Rolling IPORT Averaging
- Supports 2-Pair and 4-Pair Output Power
- 1MHz I²C Compatible Serial Control Interface
- Available In Three Power Grades
- A-Grade – LTPoE++ 38.7W to 90W
- B-Grade – PoE+ 25.5W
- C-Grade – PoE 13W
- Available In 52-Lead 7mm × 8mm (LTC4270) and 24‑Lead 4mm × 4mm (LTC4271) QFN Packages
Applications
- PoE PSE Switches/Routers
- PoE PSE Midspans
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8542319090 |
| USHTS | |
| TARIC | |
| CAHTS | |
| BRHTS | |
| INHTS | |
| MXHTS |
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8542319090 |
| USHTS | |
| TARIC |
| Type | Details |
|---|---|
| CAHTS | |
| BRHTS | |
| INHTS | |
| MXHTS | |