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參數(shù)資料
| 型號： | LTC4354CDDB |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Negative Voltage Diode-OR Controller and Monitor |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 3 X 2 MM, PLASTIC, M0-229WECD-1, DFN-8 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 127K |
| 代理商： | LTC4354CDDB |
LTC4354
1
4354f
TYPICAL APPLICATIO
U
APPLICATIU
FEATURES
DESCRIPTIO
U
The LTC
4354 is a negative voltage diode-OR controller
that drives two external N-channel MOSFETs. It replaces
two Schottky diodes and the associated heatsink, saving
power and area. The power dissipation is greatly reduced
by using N-channel MOSFETs as the pass transistors.
Power sources can easily be ORed together to increase
total system power and reliability.
When first powered up, the MOSFET body diode conducts
the load current until the pass transistor is turned on. The
LTC4354 servos the voltage drop across the pass transis-
tors to ensure smooth transfer of current from one tran-
sistor to the other without oscillation.
The MOSFETs are turned off in less than 1
μ
s whenever the
corresponding power source fails or is shorted. Fast turn-
off prevents the reverse current from reaching a level that
could damage the pass transistors.
A fault detection circuit with an open drain output capable
of driving an LED or opto-coupler indicates either MOSFET
short, MOSFET open or supply failed.
, LTC and LT are registered trademarks of Linear Technology Corporation.
AdvancedTCA is a registered trademark of the PIC Industrial Computer Manufacturers Group.
■
AdvancedTCA
Systems
■
–48V Distributed Power Systems
■
Computer Systems/Servers
■
Telecom Infrastructure
■
Optical Networks
■
Controls N-Channel MOSFETs
■
Replaces Power Schottky Diodes
■
1
μ
s Turn-off Time Limits Peak Fault Current
■
80V Operation
■
Smooth Switchover Without Oscillation
■
No Reverse DC Current
■
Fault Output
■
Selectable Fault Thresholds
■
Available in 8-Pin (3mm
×
2mm) DFN and 8-Pin SO
Packages
Negative Voltage
Diode-OR Controller
and Monitor
–48V Diode-OR
LTC4354
LOAD
DB
GA
DA
GB
V
SS
V
B
= –48V
V
A
= –48V
–48V_RTN
FAULT
IRF3710
IRF3710
4354 TA01
V
CC
33k
12k
2k
2k
LED
1
μ
F
Power Dissipation vs Load Current
CURRENT (A)
0
0
P
1
2
3
4
6
5
2
4
6
4354 TA01b
8
10
DIODE (MBR10100)
FET (IRF3710)
POWER
SAVED
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4354CDDB#PBF | 制造商:Linear Technology 功能描述:NEGATIVE VOLTAGE DIODE-OR CONTROLLER AND MONITOR 制造商:Linear Technology 功能描述:Negative Voltage Controller 8-Pin DFN EP |
| LTC4354CDDB#TR | 功能描述:IC MON DIODE-OR CTRLR NEG 8DFN RoHS:否 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時間 - 開啟:100ns 延遲時間 - 關(guān)閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LTC4354CDDB#TRM | 功能描述:IC MON DIODE-OR CTRLR NEG 8DFN RoHS:否 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時間 - 開啟:100ns 延遲時間 - 關(guān)閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LTC4354CDDB#TRMPBF | 功能描述:IC MON DIODE-OR CTRLR NEG 8DFN RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時間 - 開啟:100ns 延遲時間 - 關(guān)閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LTC4354CDDB#TRPBF | 功能描述:IC MON DIODE-OR CTRLR NEG 8DFN RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時間 - 開啟:100ns 延遲時間 - 關(guān)閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
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