參數(shù)資料
型號: LT1641
廠商: Linear Technology Corporation
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Positive High Voltage Hot Swap Controller(正大電壓熱交換控制器)
中文描述: 正高電壓熱插拔控制器(正大電壓熱交換控制器)
文件頁數(shù): 10/12頁
文件大?。?/td> 187K
代理商: LT1641
10
LT1641
APPLICATIU
Power Good Detection
The LT1641 includes a comparator for monitoring the
output voltage. The noninverting input (FB pin) is com-
pared against an internal 1.233V precision reference and
exhibits 80mV hysteresis. The comparator’s output
(PWRGD pin) is an open collector capable of operating
from a pull-up as high as 100V.
The PWRGD pin can be used to directly enable/disable a
power module with an active high enable input. Figure 14
shows how to use the PWRGD pin to control an active low
enable input power module. Signal inversion is accom-
plished by transistor Q2 and R7.
W
U
U
V
CC
TIMER
SENSE
GATE
8
7
6
5
4
2
1
3
D1
CMPZ
5248B
GND
PWRGD
FB
R5
10
5%
ON
R1
294k
1%
V
IN
48V
UV = 37V
GND
1641 F14
R2
10.2k
1%
C2
0.68
μ
F
R6,
1k, 5%
R
S
0.01
C1
10nF
R3
143k
1%
R4
4.22k
1%
R7
47k
5%
+
C
L
220
μ
F
Q2
MMBT5551LT1
V
OUT
LT1641
ACTIVE LOW
ENABLE MODULE
V
OUT
V
OUT
+
V
IN
ON/OFF
V
IN
+
Q1
IRF530
Figure 14. Active Low Enable Module
Supply Transient Protection
The LT1641 is 100% tested and guaranteed to be safe
from damage with supply voltages up to 100V. However,
spikes above 100V may damage the part. During a short-
circuit condition, the large change in currents flowing
through the power supply traces can cause inductive
voltage spikes which could exceed 100V. To minimize the
spikes, the power trace parasitic inductance should be
minimized by using wider traces or heavier trace plating
and a 0.1
μ
F bypass capacitor placed between V
CC
and
GND. A surge suppressor at the input can also prevent
damage from voltage surges.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1641-1 制造商:LINER 制造商全稱:Linear Technology 功能描述:Hot Swap Controller
LT1641-1CS8 功能描述:IC CONTRLR HOTSWAP POSVOLT 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng),AdvancedTCA ? 系統(tǒng),高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件
LT1641-1CS8#PBF 功能描述:IC CONTRLR HOTSWAP POSVOLT 8SOIC RoHS:是 類別: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:- 類型:熱交換控制器 應(yīng)用:通用型,PCI Express? 內(nèi)部開關(guān):無 電流限制:- 電源電壓:3.3V,12V 工作溫度:-40°C ~ 85°C 安裝類型: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 產(chǎn)品目錄頁面:1423 (CN2011-ZH PDF)
LT1641-1CS8#TR 功能描述:IC CONTRLR HOTSWAP POSVOLT 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng),AdvancedTCA ? 系統(tǒng),高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件
LT1641-1CS8#TRPBF 功能描述:IC CONTRLR HOTSWAP POSVOLT 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng),AdvancedTCA ? 系統(tǒng),高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件