参数资料
| 型号： | MAX5944ESE+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC FW CURR LIMITER DUAL 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | FireWire? 应用程序 |
| FET 型： | N 沟道 |
| 输出数： | 2 |
| 内部开关： | 无 |
| 延迟时间 - 关闭： | 100ns |
| 电源电压： | 7.5 V ~ 37 V |
| 电流 - 电源： | 1.3mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC N |
| 包装： | 带卷 (TR) |
ATION
ILABLE
19-3426; Rev 0; 10/04
KIT
EVALU
AVA
Dual FireWire Current Limiter and Low-Drop
ORing Switch Controller
General Description
The MAX5944 is a dual, current limiter/low-drop ORing,
switch controller power-management IC for FireWire ?
applications. Each independent channel controls two
external power MOSFETs to regulate current from the
input power supply to the load and performs low-voltage-
drop power-supply ORing. The MAX5944 operates over
the 7.5V to 37V input range and provides inrush and out-
put current limit in addition to diode ORing functions suit-
able for FireWire applications.
The MAX5944 allows the safe insertion and removal of
FireWire peripherals into a live FireWire port by providing
inrush current control and output current-limiting func-
tions. The MAX5944 features a current-limit function that
actively limits the current drawn by the load with a 2ms
timeout. Its autoretry function then automatically restarts
after the 259ms autoretry delay time.
The ORing feature provides a very efficient way to pro-
tect the FireWire port when connected to another
FireWire peripheral that sources a higher voltage. By
turning off the external MOSFETS, the MAX5944 provides
a true bidirectional load disconnect. Each channel has
an independent ON/OFF control that results in less than
10μA supply current per channel.
The MAX5944 operates over the -40°C to +85°C
extended temperature range and is available in a
16-pin SO package.
Applications
Features
? Provides Safe Hot-Swap for 7.5V to 37V Power
Supplies
? Dual-Channel Hot-Swap
? Low-Drop Power ORing with Ultra-Fast Turn-Off
? Active Current Limit
? ±5% Current-Limit Sensing Accuracy
? 2ms Current-Limit Timeout
? Fast Current-Limit Response to Output
Short-Circuit Conditions
? Drives External n-Channel Power MOSFETs
? Independent Overcurrent Fault Status Outputs
? 259ms Autoretry Period
? 10 μ A (Per Channel) Shutdown Current
? Independent ON/OFF Control Allows
Undervoltage Lockout Programming
? Fast Load Disconnect Control Through
ON/OFF Inputs
? Bidirectional Load Disconnect
? Power Routing from One Port to Another
Ordering Information
FireWire Desktop/Notebook Port
FireWire Peripheral Device Current Limit
PART
MAX5944ESE
TEMP RANGE
-40 ° C to +85 ° C
PIN-PACKAGE
16 SO
FireWire Hub
Hot Swap
TOP VIEW
Pin Configuration
INA 1
ONA 2
FAULTA 3
16 SENSEA
15 GATE1A
14 GATE2A
ONQ1 4
OUTB 5
GATE2B 6
GATE1B 7
MAX5944
13 OUTA
12 GND
11 FAULTB
10 ONB
Typical Operating Circuit appears at end of data sheet.
FireWire is a registered trademark of Apple Computer, Inc.
SENSEB 8
SO
9
INB
________________________________________________________________ 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
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|---|---|
| MAX5944EVKIT | 功能描述:DC/DC 开关控制器 Evaluation Kit for the MAX5944 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX5945CAX | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5945CAX+ | 功能描述:热插拔功率分布 IEEE 802.3af Quad Net Pwr Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5945CAX+T | 功能描述:热插拔功率分布 IEEE 802.3af Quad Net Pwr Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5945CAX-T | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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