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参数资料
| 型号： | MAX5943AEEE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 16/20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： | 100 |
| 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： | 管件 |
FireWire Current Limiter and Low-Drop
ORing Switch Controller
MOSFET Selection
Select external MOSFETs according to the application
current level. The MOSFETs’ on-resistance (R DS(ON) )
should be chosen low enough to have minimum voltage
For the MAX5943B–MAX5943E, a short-circuit event
results in high power dissipated in both Q1 and Q2 dur-
ing the timeout period (Figure 13) where the total power
dissipated in either MOSFET is:
drop at full load to limit the MOSFET power dissipation.
High R DS(ON) also causes large output ripple if there is
a pulsating load. Determine the device power rating to
where:
P = I SC 2 x R DS(ON)
accommodate startup, a short-circuit condition, and
when the device is in autoretry mode.
During normal operation, the external MOSFETs dissipate
little power. The power dissipated in normal operation is:
and
I SC = V IN /R EQ
R EQ = R SENSE +R DS(ON1) + R DS(ON2)
P = I LOAD 2 x R DS(ON)
The most power dissipation occurs during a short-circuit
V IN
+
V IS
-
+ V Q1 -
+ V Q2 -
event, resulting in high power dissipated in Q2 (Figure
11) during the timeout period for the MAX5943A, where
the power dissipated across Q2 is:
IN
SENSE GATE1
GATE2
OUT
P Q2 = (V IN - V IS – V Q1 ) x I LIMIT
MAX5943A
Figure 11. Power Dissipated Across MOSFETs During a Short-
Circuit Fault for MAX5943A
L1
TP3
N1
Si2318DS
N2A
Si7222DN
N2B
FERRITE
250 Ω
PORT 0
1
3
5
J3
R3
1k Ω
Q1A
DMMT3906
Q1B
R4
1k Ω
C3
1 μ F
C4
0.1 μ F
R7
100k Ω
PORT 0
R5
100k Ω
R6
100k Ω
2
4
6
R2
0.020 Ω
J1
V IN
TP1
V IN
1%
0.25W
U1
R1
200k Ω
TP5
ON
MAX5943AEEE
C1
1 μ F
C2
0.01 μ F
J2
GND
R8
TP2
GND
TP6
V PULLUP
100k Ω
TP4
FAULT
Figure 12. UL-Recognized Single-Port FireWire Protective Circuit
16
______________________________________________________________________________________
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PDF描述 |
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| MAX8555EUB+T | IC CNTRLR MOSFET ORING 10-UMAX |
| MAX5943CEEE+ | IC FIREWIRE CURR LIMITER 16-QSOP |
| S2AA-13 | RECTIFIER GPP SMD 50V 1.5A SMA |
| V24A8C300BL2 | CONVERTER MOD DC/DC 8V 300W |
| R0.25S8-1524/P | CONV DC/DC 0.25W 15V IN 24V OUT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5943AEEE+ | 功能描述:热插拔功率分布 FireWire Current Limiter 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 |
| MAX5943AEEE+T | 功能描述:热插拔功率分布 FireWire Current Limiter 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 |
| MAX5943AEEE-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 |
| MAX5943AEVKIT | 功能描述:电源管理IC开发工具 Evaluation Kit for the MAX5943A/B/C/D/E RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX5943BEEE | 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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