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參數(shù)資料
| 型號： | MAX4271-MAX4273 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 3V to 12V Current-Limiting Hot Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection |
| 中文描述： | 3V至12V的電流限制與自動重試，DualSpeed熱插拔控制器/雙層故障保護 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 407K |
| 代理商： | MAX4271-MAX4273 |
Typical Operating Circuit
N
M1
MAX4271
MAX4272
V
OUT
C
BOARD
CTIM
CSPD
C
TIM
ON
ON
GND
STAT
V
CC
R
SENSE
STAT
REMOVABLE CARD
2.7V TO 13.2V
BACKPLANE
IN
SENSE
GATE
GND
General Description
The MAX4271/MAX4272/MAX4273 comprise a com-
plete family of integrated 3V to 12V hot-swap con-
trollers. They allow the safe insertion and removal of
circuit cards into live backplanes.
The discharged filter capacitors of the circuit card pro-
vide a low impedance to the live backplane. High in-
rush currents from the backplane to the circuit card can
burn up connectors and components, or momentarily
collapse the backplane power supply leading to a sys-
tem reset. This family of hot-swap controllers prevents
such problems by regulating the current to a preset
limit when the board is plugged in, allowing the system
to stabilize safely. After the startup cycle is completed,
two on-chip comparators provide DualSpeed/BiLevel
protection against short circuits, load glitches, and
overcurrent conditions. In the event of a fault condition,
the load is disconnected. Fault recovery is handled by
unlatching (MAX4271), autoretry (MAX4272), or pro-
grammed (MAX4273) methods.
The MAX4271 family includes many integrated features
that reduce component count and design time. An on-
board charge pump provides the gate drive for a low-
cost, external N-FET. Integrated features like startup
current regulation and current glitch protection eliminate
external timing resistors and capacitors. Also featured
are an open-drain status output to indicate a fault condi-
tion, and an adjustable overcurrent response time.
The MAX4271 (latched fault protection) and MAX4272
(autoretry fault protection) come in 8-pin SO packages.
The MAX4273 (full function) comes in the space-saving
16-pin QSOP package and 16-pin SO package. All
parts are specified across the extended temperature
range, and have an absolute maximum rating of 15V to
provide extra protection against inductive kickback dur-
ing board removal.
Features
o
Provide Safe Hot Swap for +3V to +12V Power
Supplies with Few External Components
o
Unique Current Regulation Architecture
Minimizes N-FET Linear Mode Duration
o
Autoretry Feature (MAX4272/MAX4273)
o
DualSpeed/BiLevel Current Limit Protects Against
Current Glitches and Short Circuits
o
Power-On RESET (MAX4273)
o
15V Absolute Maximum Rating Protects Against
Inductive Kickbacks During Board Removal
o
Internal Charge Pump Generates Gate Drive for
External N-MOSFET
o
Status Output Pin Indicates Fault/Safe Condition
o
Space-Saving 8-Pin SO, 16-Pin QSOP Packages
________________________Applications
Base Stations
RAID
Remote-Access Servers
M
3V to 12V Current-Limiting Hot Swap Controllers
with Autoretry, DualSpeed/BiLevel Fault Protection
________________________________________________________________
Maxim Integrated Products
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
1
19-1694; Rev 1a; 4/01
EVALUATION KIT
AVAILABLE
DualSpeed/BiLevel is a trademark of Maxim Integrated
Products.
Pin Configurations appear at end of data sheet.
Network Routers and
Switches
ISDN
Ordering Information
PART
MAX4271
ESA
MAX4272
ESA
MAX4273
EEE
MAX4273ESE
TEMP. RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
8 SO
8 SO
16 QSOP
16 SO
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX4271ESA | 3V to 12V Current-Limiting Hot Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection |
| MAX4272ESA | 3V to 12V Current-Limiting Hot Swap Controllers with Autoretry, DualSpeed/BiLevel Fault Protection |
| MAX427EPA | Low Noise, High-Precision Op Amps |
| MAX437EPA | Low Noise, High-Precision Op Amps |
| MAX427ESA | Low Noise, High-Precision Op Amps |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4272ESA | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX4272ESA+ | 功能描述:熱插拔功率分布 3-12V Current-Limit Hot Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX4272ESA+T | 功能描述:熱插拔功率分布 3-12V Current-Limit Hot Swap Controller RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX4272ESA-T | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX4273EEE | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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