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參數資料
| 型號： | MAX5943 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Quadruple 2-Input Positive-NAND Buffers With Open-Collector Outp 20-LCCC -55 to 125 |
| 中文描述： | FireWire限流器與低壓差“或”邏輯開關控制器 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 933K |
| 代理商： | MAX5943 |
General Description
The MAX5943 is a fully integrated power-management
IC for FireWire
applications. This device controls two
external power n-channel MOSFETs to regulate current
from the input power supply to the load and performs
low-voltage-drop, power-supply ORing. The MAX5943
operates over a 7.5V to 37V input range and provides
inrush and output current limit in addition to a diode
ORing function suitable for FireWire applications.
The MAX5943 allows the safe insertion and removal of
FireWire peripherals into a live FireWire port by providing
inrush current control and an output current-limiting func-
tion. The ORing feature provides a very efficient way to
protect the FireWire port when connected to another
FireWire peripheral that sources a higher voltage. By turn-
ing off both external MOSFETS, the MAX5943 provides a
true bidirectional load disconnect. A low-current shut-
down mode disables the MAX5943, resulting in less than
10μA supply current. A pin-selectable input allows
latched or autoretry fault management after a fault.
The MAX5943A features a current-limit function that
actively limits the current drawn by the load with a pro-
grammable timeout. The MAX5943B–MAX5943E do not
actively limit the load current but provide a circuit-breaker
function. See the
Selector Guide
for the default and pro-
grammable circuit-breaker timeouts.
The MAX5943 operates over the -40°C to +85°C extended
temperature range and is available in a 16-pin QSOP
package.
Applications
FireWire Desktop/Notebook Port
FireWire Peripheral Device Current Limit
FireWire Hub
Hot Swap
Features
Provides Safe Hot Swap for 7.5V to 37V Power
Supplies
Low-Drop Power ORing with Ultra-Fast Turn-Off
Programmable Active Current Limit (MAX5943A)
Programmable Circuit Breaker
(MAX5943B–MAX5943E)
±
5% Current-Limit Sensing Accuracy
Programmable Current-Limit/Circuit-Breaker
Timeout
Fast Current-Limit Response to Output Short-
Circuit Conditions (MAX5943A)
Drives External N-Channel Power MOSFETs
Overcurrent Fault Status Output
Latched or Autoretry Overcurrent Fault
Management
10μA Shutdown Current
ON/OFF Control Allows Undervoltage Lockout
Programming
Fast Load Disconnect Control Through ON Input
Ordering Information
M
FireWire Current Limiter and Low-Drop
ORing Switch Controller
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
ON
IN
SENSE
GATE1
N.C.
GATE2
OUT
N.C.
GND
TOP VIEW
MAX5943
QSOP
FAULT
TIM
OR_ADJ
ILIM
LATCH
N.C.
ONQ1
Pin Configuration
19-3378; Rev 0; 8/04
Typical Operating Circuit and Selector Guide appear at end
of data sheet.
FireWire is a registered trademark of Apple Computers, Inc.
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
16 QSOP
16 QSOP
16 QSOP
16 QSOP
16 QSOP
MAX5943AEEE
MAX5943BEEE
MAX5943CEEE
MAX5943DEEE
MAX5943EEEE
相關PDF資料 |
PDF描述 |
|---|---|
| MAX5943AEEE | Quadruple 2-Input Positive-NAND Buffers With Open-Collector Outp 14-CDIP -55 to 125 |
| MAX5943BEEE | Quadruple 2-Input Positive-NAND Buffers With Open-Collector Outp 14-CFP -55 to 125 |
| MAX5943CEEE | FireWire Current Limiter and Low-Drop ORing Switch Controller |
| MAX5943EEEE | FireWire Current Limiter and Low-Drop ORing Switch Controller |
| MAX6043CAUT50 | Precision High-Voltage Reference in SOT23 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX5943AEEE | 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 |
| MAX5943AEEE+ | 功能描述:熱插拔功率分布 FireWire Current Limiter 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 |
| MAX5943AEEE+T | 功能描述:熱插拔功率分布 FireWire Current Limiter 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 |
| MAX5943AEEE-T | 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 |
| MAX5943AEVKIT | 功能描述:電源管理IC開發工具 Evaluation Kit for the MAX5943A/B/C/D/E 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 |
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