LTC4257CS8-1#PBF
| Parameters | |
|---|---|
| Factory Lead Time | 1 Week |
| Package / Case | 8-SOIC (0.154, 3.90mm Width) |
| Surface Mount | YES |
| Operating Temperature | 0°C~70°C |
| Packaging | Tube |
| Published | 2005 |
| JESD-609 Code | e3 |
| Part Status | Active |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Number of Terminations | 8 |
| ECCN Code | EAR99 |
| Type | Controller (PD) |
| Terminal Finish | Matte Tin (Sn) |
| Additional Feature | REQUIRES A NEGATIVE SUPPLY OF 48V |
| Subcategory | Power Management Circuits |
| Technology | CMOS |
| Voltage - Supply | 57V Max |
| Terminal Position | DUAL |
| Terminal Form | GULL WING |
| Peak Reflow Temperature (Cel) | 260 |
| Number of Functions | 1 |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Base Part Number | LTC4257 |
| Pin Count | 8 |
| JESD-30 Code | R-PDSO-G8 |
| Number of Channels | 1 |
| Adjustable Threshold | NO |
| Power - Max | 12.95W |
| Current - Supply | 3mA |
| Supply Current-Max (Isup) | 3mA |
| Internal Switch(s) | Yes |
| Standards | 802.3af (PoE) |
| Auxiliary Sense | No |
| Length | 4.9025mm |
| Width | 3.899mm |
| RoHS Status | ROHS3 Compliant |
LTC4257CS8-1#PBF Overview
As part of the Tube package, PoE controller is embedded.In other words, 8-SOIC (0.154, 3.90mm Width) refers to the way in which it is packaged.The type of this PoE controller is Controller (PD).It has been reported that the number of channels is growing strongly/weakly: 1.Keeping its operating temperature at 0°C~70°C ensures PoE reliability.Electricity is supplied to this Po E controller by voltage 57V Max.The base part number LTC4257 determines the Po E controllers.It is possible to terminate a transmission line with a 8 termination by connecting a power over ethernet controller with a matching impedance to the transmission line.During normal operation, this electrical ethernet over power controller will produce 12.95W Watts of power.8 pins are equipped with it.Supply current is equal to 3mA.There is a Po E controller named Power Management Circuits that includes this Po E controller.During the reflow process of this electrical ethernet power controller, Cel (peak reflow temperature) reaches 260.The maximal current (Isup) supplied for its operation reaches 3mA.Also, it has REQUIRES A NEGATIVE SUPPLY OF 48V as a characteristic.
LTC4257CS8-1#PBF Features
Tube package
8 pin count
LTC4257CS8-1#PBF Applications
There are a lot of Linear Technology/Analog Devices LTC4257CS8-1#PBF Power Over Ethernet (PoE) Controllers applications.
- IP Phone Power Management
- IEEE 802.3bt (Draft) Compliant Devices
- Single-Port PSE End-Point Applications
- POS Terminals
- Routers
- Power Modules
- Public Information Displays
- Pass-through System
- Non-Compliant, Application Specific Devices
- Single-Port PSE Power Injectors
