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参数资料
| 型号： | MAX5943EEEE+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 17/20页 |
| 文件大小： | 0K |
| 描述： | IC FIREWIRE CURR LIMITER 16-QSOP |
| 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-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
FireWire Current Limiter and Low-Drop
ORing Switch Controller
The programmable timeout of the MAX5943 allows the
use of MOSFETs with low power ratings. A MOSFET
typically withstands single-shot pulses with higher dis-
sipation than the specified package rating.
A single-port FireWire protective circuit employing the
MAX5943A has been UL recognized as a result of
extensive safety testing by Underwriters Laboratories. It
is the circuits themselves, not any individual component
thereof, that are UL recognized. The circuit is further
described in Application Note 3984—UL Recognized,
IEEE 1394 Single- and Dual-Port FireWire Protective
Circuits available at www.maxim-ic.com/appnotes.cfm/
appnote_number/3984.
The circuit provides:
? 2.5A (adjustable) current limiting to the load at initial
connection or in overload fault condition
V IN
R SENSE
R DS(ON)1
R DS(ON)1
ISC
?
2ms (adjustable) current-limit timeout before load
disconnect for excessive load current
?
Automatic-restart attempts after a fault shutdown
condition
IN
SENSE GATE1
GATE2
OUT
?
<0.8% current-limited duty cycle in continuous fault
condition
MAX5943B–MAX5943E
?
6.5V undervoltage shutdown protection
Figure 13. Power Dissipated Across MOSFETs During a Short-
?
Low-drop ORing in multiple power-source applica-
tions, and
Circuit Fault for MAX5943B–MAX5943E
FB
BST
V IN
ON
?
Fault reporting
CPA SENSE
PHY
POWER OUT
LX
MAX5033
VD
IN4148
IN4148
GND
SGND
IN4148
CABLE
POWER
15m Ω
SI7958DP
SI7958DP
30m Ω
SI7958DP
SI7958DP
PORT 0
SOURCE
TIM IN
SENSE GATE1
GATE2 OUT
INA
SENSEA GATE1A
GATE2A OUTA
ON
ILIM
LATCH
MAX5943A
GND
ONQ1
FAULT
OR_ADJ
ONA
ONQ1
GND
MAX5944
FAULTA
FAULTB
ONB
INB
SENSEB GATE1B
GATE2B OUTB
BATTERY-
POWER
SOURCE
15m Ω
SI7958DP
SI7958DP
30m Ω
IRF7478
IRF7478
IN4148
PORT 1
TIM IN
ON
SENSE GATE1
MAX5943A
GATE2 OUT
FAULT
CABLE NOT
ON SLEEP
ILIM
LATCH
GND
ONQ1
OR_ADJ
CURRENT-LIMIT
SENSE
PORT 1 PORT 0
SENSE SENSE
Figure 14. Two-Port FireWire Power Provider Using MAX5943A and MAX5944
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5944ESE | 功能描述:DC/DC 开关控制器 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 |
| MAX5944ESE+ | 功能描述:DC/DC 开关控制器 Dual FireWire Current Limiter 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 |
| MAX5944ESE+T | 功能描述:DC/DC 开关控制器 Dual FireWire Current Limiter 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 |
| MAX5944ESE-T | 功能描述:DC/DC 开关控制器 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 |
| 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 |
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