- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377711 > LT1641 (Linear Technology Corporation) Positive High Voltage Hot Swap Controller(正大電壓熱交換控制器) PDF資料下載
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)： | 8/12頁 |
| 文件大?。?/td> | 187K |
| 代理商： | LT1641 |
8
LT1641
APPLICATIU
TIMER
The TIMER pin (Pin 5) provides a method for program-
ming the maximum time the chip is allowed to operate in
current limit. When the current limit circuitry is not active,
the TIMER pin is pulled to GND by a 3
μ
A current source.
After the current limit circuit becomes active, an 80
μ
A pull-
up current source is connected to the TIMER pin and the
voltage will rise with a slope equal to 77
μ
A/C
TIMER
as long
as the current limit circuit remains active. Once the desired
maximum current limit time is set, the capacitor value is:
C(nF) = 62 t(ms).
If the current limit circuit turns off, the TIMER pin will be
discharged to GND by the 3
μ
A current source.
W
U
U
Figure 9. Short-Circuit Waveforms
V
CC
TIMER
SENSE
GATE
8
7
6
5
4
2
1
3
D1
CMPZ
5248B
GND
PWRGD
PWRGD
FB
R5
10
5%
ON
R1
49.9k
1%
V
IN
24V
GND
1641 F10
R2
3.4k
1%
C2
0.68
μ
F
R
S
0.025
C1
10nF
R3
59k
1%
R4
3.57k
1%
R7
24k
5%
C
L
V
OUT
LT1641
Q1
IRF530
Figure 10. Automatic Restart Application
Whenever the TIMER pin reaches 1.233V, the internal fault
latch is set. The GATE pin is immediately pulled to GND and
the TIMER pin is pulled back to GND by the 3
μ
A current
source. The part is not allowed to turn on again until the
voltage at the TIMER pin falls below 0.5V. The fault latch
is cleared by pulling the ON pin low.
The waveform in Figure 9 shows how the output latches off
following a short-circuit. The drop across the sense resis-
tor is held at 12mV as the timer ramps up. Since the output
did not rise bringing FB above 0.5V, the circuit latches off.
Automatic Restart
To force the LT1641 to automatically restart after an
overcurrent fault, the bottom plate of capacitor C1 can be
tied back to the ON pin (Figure 10).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1671CMS8 | 60ns, Low Power, Single Supply, Ground-Sensing Comparator |
| LT1671CS8 | 60ns, Low Power, Single Supply, Ground-Sensing Comparator |
| LT1671IS8 | 60ns, Low Power, Single Supply, Ground-Sensing Comparator |
| LT1675CMS8-1 | 250MHz, Triple and Single RGB Multiplexer with Current Feedback Amplifiers |
| LT1675CGN | 250MHz, Triple and Single RGB Multiplexer with Current Feedback Amplifiers |
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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。