參數(shù)資料
型號(hào)： LTC4257IS8#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 網(wǎng)絡(luò)接口
英文描述： IEEE 802.3af PD Power over Ethernet Interface Controller; Package: SO; No of Pins: 8; Temperature Range: -40°C to +85°C
中文描述： DATACOM, NETWORK INTERFACE SUPPORT CIRCUIT, PDSO8
封裝： 0.150 INCH, LEAD FREE, PLASTIC, SOP-8
文件頁(yè)數(shù)： 12/20頁(yè)
文件大小： 258K
代理商： LTC4257IS8#TRPBF
LTC4257
2
4257fb
TOP VIEW
DD PACKAGE
8-LEAD (3mm
× 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1
NC
RCLASS
NC
VIN
GND
NC
PWRGD
VOUT
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Supply Voltage
Voltage with Respect to GND Pin (Notes 4, 5, 6)
Maximum Operating Voltage
●
–57
V
Signature Range
●
– 1.5
– 9.5
V
Classification Range
● –12.5
– 21
V
UVLO Turn-On Voltage
● –37.7
–39.2
– 40.2
V
UVLO Turn-Off Voltage
● –29.3
–30.5
– 31.5
V
IIN_ON
IC Supply Current when ON
VIN = – 48V, Pins 5, 6 Floating
●
3mA
IIN_CLASS
IC Supply Current During Classification VIN = – 17.5V, Pin 2 Floating, VOUT Tied to GND
●
0.35
0.50
0.65
mA
(Note 7)
ICLASS
Current Accuracy During Classification 10mA < ICLASS < 40mA, – 12.5V ≤ VIN ≤ – 21V,
●
±3.5
%
(Notes 8, 9)
(Notes 1, 2)
VIN Voltage ............................................. 0.3V to – 100V
VOUT, PWRGD Voltage ............. VIN + 100V to VIN – 0.3V
RCLASS Voltage ............................ VIN + 7V to VIN – 0.3V
PWRGD Current .................................................. 10mA
RCLASS Current .................................................. 100mA
The
● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
ABSOLUTE
AXI U
RATI GS
W
WW
U
ELECTRICAL CHARACTERISTICS
Operating Ambient Temperature Range
LTC4257C ............................................... 0
°C to 70°C
LTC4257I ............................................. –40
°C to 85°C
Storage Temperature Range
S8 Package ....................................... – 65
°C to 150°C
DD Package ...................................... – 65
°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grades are identified by a label on the shipping container.
ORDER PART NUMBER
S8 PART MARKING
TJMAX = 150°C, θJA = 150°C/W
4257
4257I
LTC4257CS8
LTC4257IS8
1
2
3
4
8
7
6
5
TOP VIEW
GND
NC
PWRGD
VOUT
NC
RCLASS
NC
VIN
S8 PACKAGE
8-LEAD PLASTIC SO
PACKAGE/ORDER I FOR ATIO
UU
W
ORDER PART NUMBER
DD PART MARKING*
TJMAX = 125°C, θJA = 43°C/W
EXPOSED PAD TO BE SOLDERED TO
ELECTRICALLY ISOLATED PCB HEATSINK
LACT
LTC4257CDD
LTC4257IDD
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF
Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
相關(guān)PDF資料
PDF描述
LTC4259ACGW-1#PBF Quad IEEE 802.3af Power over Ethernet Controller with AC Disconnect; Package: SSOP; No of Pins: 36; Temperature Range: 0&deg;C to +70&deg;C
LTC4259ACGW-1#TRPBF Quad IEEE 802.3af Power over Ethernet Controller with AC Disconnect; Package: SSOP; No of Pins: 36; Temperature Range: 0&deg;C to +70&deg;C
LTC4259AIGW-1#PBF Quad IEEE 802.3af Power over Ethernet Controller with AC Disconnect; Package: SSOP; No of Pins: 36; Temperature Range: -40&deg;C to +85&deg;C
LTC4259AIGW-1#TRPBF Quad IEEE 802.3af Power over Ethernet Controller with AC Disconnect; Package: SSOP; No of Pins: 36; Temperature Range: -40&deg;C to +85&deg;C
LTC4259ACGW#PBF Quad IEEE 802.3af Power over Ethernet Controller with AC Disconnect; Package: SSOP; No of Pins: 36; Temperature Range: 0&deg;C to +70&deg;C
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4258 制造商:LINER 制造商全稱:Linear Technology 功能描述:Quad IEEE 802.3at Power over Ethernet Controller
LTC4258_09 制造商:LINER 制造商全稱:Linear Technology 功能描述:Quad IEEE 802.3af Power over Ethernet Controller with Integrated Detection
LTC4258CGW 制造商:Linear Technology 功能描述:POWER OVER ETHERNET CONTROLLER
LTC4258CGW#PBF 功能描述:IC POE 802.3AF QUAD 36-SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:2,450 系列:- 控制器類型:SPI 總線至 I²C 總線橋接 接口:I²C，串行，SPI 電源電壓:2.4 V ~ 3.6 V 電流 - 電源:11mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-HVQFN（4x4） 包裝:托盤 配用:568-3511-ND - DEMO BOARD SPI TO I2C 其它名稱:935286452157SC18IS600IBSSC18IS600IBS-ND
LTC4258CGW#TR 制造商:Linear Technology 功能描述:POWER OVER ETHERNET CONTROLLER
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