ITH/RUN (Pin 2/Pin 1): Current Threshold/Run Input. This pin pe" />
參數(shù)資料
型號： DC804B-A
廠商： Linear Technology
文件頁數(shù)： 31/32頁
文件大?。?/td> 0K
描述： EVAL BOARD FOR LTC4267
設計資源： DC804B Design Files
標準包裝： 1
主要目的： 電源管理，以太網(wǎng)供電（POE）
嵌入式： 否
已用 IC / 零件： LTC4267
已供物品： 板
LTC4267
8
4267fc
ITH/RUN (Pin 2/Pin 1): Current Threshold/Run Input. This
pin performs two functions. It serves as the switching
regulator error amplier compensation point as well as
the run/shutdown control input. Nominal voltage range is
0.7V to 1.9V. Forcing the pin below 0.28V with respect to
PGND causes the controller to shut down.
PGND (Pin 1, 8, 9, 16/Pin 2, 15): Switching Regulator
Negative Supply. This pin is the negative supply rail for the
switching regulator controller and must be tied to POUT.
NGATE (Pin 3/Pin 3): Gate Driver Output. This pin drives
the regulator’s external N-Channel MOSFET and swings
from PGND to PVCC.
PVCC (Pin 4/Pin 4): Switching Regulator Positive Supply.
This pin is the positive supply rail for the switching regula-
tor and must be closely decoupled to PGND.
RCLASS(Pin5/Pin5):ClassSelectInput.Usedtosetthecur-
rent value the PD maintains during classication. Connect
a resistor between RCLASS and VPORTN (see Table 2).
VPORTN (Pin 7/Pin 7): Negative Power Input. Tie to the
–48V input port through the input diodes.
POUT (Pin 10/Pin 10): Power Output. Supplies –48V to
the switching regulator PGND pin and any additional PD
loads through an internal power MOSFET that limits input
current. POUT is high impedance until the voltage reaches
the turn-on UVLO threshold. The output is then current
limited. See the Application Information section.
PWRGD (Pin 11/Pin 11):Power Good Output, Open-Drain.
Indicates that the PD MOSFET is on and the switching
regulator can start operation. Low impedance indicates
power is good. PWRGD is high impedance during detec-
tion, classication and in the event of a thermal overload.
PWRGD is referenced to VPORTN.
SIGDISA (Pin 12/Pin 12):Signature Disable Input. SIGDISA
allows the PD to present an invalid signature resistance
and remain inactive. Connecting SIGDISA to VPORTP lowers
the signature resistance to an invalid value and disables
all functions of the LTC4267. If unused, tie SIGDISA to
VPORTN.
VPORTP (Pin 13/Pin 13): Positive Power Input. Tie to the
input port power return through the input diodes.
SENSE (Pin 14/Pin 14): Current Sense. This pin performs
two functions. It monitors the regulator switch current by
reading the voltage across an external sense resistor. It also
injects a current ramp that develops a slope compensation
voltage across an optional external programming resistor.
See the Applications Information section.
VFB (Pin 15/Pin 16): Feedback Input. Receives the feed-
back voltage from the external resistor divider across the
output.
NC (Pin 6/Pin 6, 8, 9): No Internal Connection.
Backside Connection (DHC Only, Pin 17): Exposed Pad.
This exposed pad must be soldered to an electrically isolated
and thermally conductive PC board heat sink.
(GN/DHC)
UU
U
PI FU CTIO S
相關PDF資料
PDF描述
IR3087MTR IC XPHASE W/OVP/TM CTRL 20L-MLPQ
A3BBB-1618M IDC CABLE- ASR16B/AE16M/ASR16B
HBM22DSUH CONN EDGECARD 44POS .156 DIP SLD
GBC22DRYI CONN EDGECARD 44POS DIP .100 SLD
IR3081MTR IC PHASE CONTROLLER 28L MLPQ
相關代理商/技術參數(shù)
參數(shù)描述
DC804B-A 制造商:Linear Technology 功能描述:EVAL BOARD, LTC4267 3.3V, 1A POE INTERFA
DC8050 制造商:DCCOM 制造商全稱:Dc Components 功能描述:TECHNICAL SPECIFICATIONS OF NPN EPITAXIAL PLANAR TRANSISTOR
DC-8050-BT 功能描述:機架和機柜 75.31"X27.00"X30.75" RoHS:否 制造商:Hammond Manufacturing 產(chǎn)品:Racks 類型:Table Top 外部寬度: 外部高度: 外部深度: 面板高度: 面板寬度:
DC-8050-RB 功能描述:機架和機柜 RO 563-DC-8050-BT RoHS:否 制造商:Hammond Manufacturing 產(chǎn)品:Racks 類型:Table Top 外部寬度: 外部高度: 外部深度: 面板高度: 面板寬度:
DC8050S 制造商:DCCOM 制造商全稱:Dc Components 功能描述:TECHNICAL SPECIFICATIONS OF NPN EPITAXIAL PLANAR TRANSISTOR
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*