參數(shù)資料
型號(hào)： LTC4227IUFD-1#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 電源管理
英文描述： POWER SUPPLY MANAGEMENT CKT, PQCC20
封裝： 4 X 5 MM, LEAD FREE, PLASTIC, MO-220, QFN-20
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 307K
代理商： LTC4227IUFD-1#PBF
LTC4227-1/LTC4227-2
1
422712f
Typical applicaTion
FeaTures
DescripTion
Dual Ideal Diode and
Single Hot Swap Controller
The LTC4227 offers ideal diode and Hot Swap func-
tions for two power rails by controlling external N-channel
MOSFETs. MOSFETs acting as ideal diodes replace two
high power Schottky diodes and the associated heat sinks,
saving power and board area. A Hot Swap control MOSFET
allows a board to be safely inserted and removed from
a live backplane by limiting inrush current. The supply
output is also protected against short-circuit faults with a
fast acting current limit and internal timed circuit breaker.
The LTC4227 regulates the forward voltage drop across
the MOSFETs to ensure smooth current transfer from one
supply to the other without oscillation. The ideal diodes
turn on quickly to reduce the load voltage droop during
supply switchover. If the input supply fails or is shorted,
a fast turn-off minimizes reverse-current transients.
The LTC4227 allows turn-on/off control, and reports fault
and power good status for the supply. The LTC4227-1
features a latch-off circuit breaker, while the LTC4227-2
provides automatic retry after a fault.
Diode-OR with Hot Swap Application
applicaTions
n
Power Path and Inrush Current Control for
Redundant Supplies
n
Low Loss Replacement for Power Schottky Diodes
n
Allows Safe Hot Swapping from a Live Backplane
n
2.9V to 18V Operating Range
n
Controls N-Channel MOSFETs
n
Limits Peak Fault Current in ≤1s
n
0.5s Turn-On and Reverse Turn-Off Time
n
Adjustable Current Limit with Circuit Breaker
n
Smooth Switchover without Oscillation
n
Adjustable Current Limit Fault Delay
n
Fault and Power Status Output
n
LTC4227-1: Latch Off After Fault
n
LTC4227-2: Automatic Retry After Fault
n
20-Lead 4mm
× 5mm QFN and
16-Lead SSOP Packages
n
Redundant Power Supplies
n
Supply Holdup
n
Computer Systems and Servers
n
Telecom Networks
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. Hot Swap is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
BACKPLANE
CONNECTOR
12V
CARD
CONNECTOR
CPO1
D2ON
ON
FAULT
PWRGD
137k
100F
12V
7.6A
20k
INTVCC
GND
IN1 DGATE1
DGATE2
LTC4227
422712 TA01a
SiR462DP
Si7336ADP
0.006
HGATE OUT
SENSE+ SENSE–
CPO2
0.1F
IN2
+
0.1F
SiR462DP
EN
0.1F
TMR
Power Dissipation
vs Load Current
LOAD CURRENT (A)
0
POWER
DISSIP
ATION
(W)
0.5
1.0
1.5
2.0
2.5
3.0
2
4
6
8
4227 TA01
DIODE
(SBG1025L)
MOSFET
(SiR462DP)
POWER SAVED
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4227IUFD-2#PBF 功能描述:IC CONTROLLER HOT SWAP 20-QFN RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:119 系列:- 類(lèi)型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開(kāi)關(guān):無(wú) 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:80-TQFP 供應(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤(pán) 產(chǎn)品目錄頁(yè)面:1423 (CN2011-ZH PDF)
LTC4227IUFD-2#TRPBF 功能描述:IC CTRLR HOT SWAP 20-QFN RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:119 系列:- 類(lèi)型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開(kāi)關(guān):無(wú) 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:80-TQFP 供應(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤(pán) 產(chǎn)品目錄頁(yè)面:1423 (CN2011-ZH PDF)
LTC4228-1 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:Dual Ideal Diode and Hot Swap Controller
LTC4228CGN-1#PBF 功能描述:IC HOT SWAP CTRLR 28SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:119 系列:- 類(lèi)型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開(kāi)關(guān):無(wú) 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:80-TQFP 供應(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤(pán) 產(chǎn)品目錄頁(yè)面:1423 (CN2011-ZH PDF)
LTC4228CGN-1#TRPBF 功能描述:IC HOT SWAP CTRLR 28SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:119 系列:- 類(lèi)型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開(kāi)關(guān):無(wú) 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:80-TQFP 供應(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤(pán) 產(chǎn)品目錄頁(yè)面:1423 (CN2011-ZH PDF)
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