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參數資料
| 型號： | LM5068 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | NEGATIVE VOLTAGE HOT SWAP CONTROLLER |
| 中文描述： | 負電壓熱插拔控制器 |
| 文件頁數： | 1/1頁 |
| 文件大?。?/td> | 42K |
| 代理商： | LM5068 |
For additional information, contact Don Ashley at
Donald.Ashley@nsc.com
General Description
The LM5068 hot-swap controller provides intelligent con-
trol of power supply connections during the insertion and
removal of circuit cards powered by live system backplanes
The LM5068 provides both in-rush current control and
short-circuit protection functions, and limits power supply
transients in the backplane caused by the insertion of
additional circuit cards. The LM5068 controls the external
N-Channel MOSFET to provide programmable load current
limiting and circuit breaker functions using a single external
current sense resistor. The LM5068 issues a power good
(PWRGD) signal at the conclusion of a successful power-
on sequence. Input over-voltage or under-voltage fault
conditions will cancel the PWRGD indication.
The LM5068-1 and -2 indicate power good as an open-
drain active high PWRGD state. The LM5068-3 and -4
indicate power-good as an open-drain active low PWRGD
state. The LM5068-1 and -3 latch off after a fault condition
is detected while the LM5068-2 and -4 continuously re-try
at intervals set by a programmable timer.
The LM5068 is available in MSOP-8 package.
LM5068
Negative Voltage Hot-Swap Controller
Features
In-rush current limiting for safe board insertion into
live backplanes
Fast response to over-current fault conditions with
active current limiting
Wide -10V to -100V input voltage range
Programmable Under-voltage and Over-voltage
shutdown protection with adjustable hysteresis
Programmable Multi-Function Timer for board
insertion de-bounce delay
Fault timer avoids nuisance trips caused by short
duration load transients
Active gate clamping during initial power application
Available in both latched fault and automatic retry
versions
Available with either active HIGH or active LOW
power good flag
2003 National Semiconductor Corporation
PRELIMINARY
Samples are available now; volume production is expected
in late January 2004.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM5068EVAL | 功能描述:電源管理IC開發工具 LM5068 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM5068EVAL/NOPB | 功能描述:EVALUATION BOARD FOR LM5068 RoHS:是 類別:編程器，開發系統 >> 評估演示板和套件 系列:- 標準包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| LM5068MM-1 | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| LM5068MM-1/MMX-1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Negative Voltage Hot Swap Controller |
| LM5068MM-1/NOPB | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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