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参数资料
| 型号： | MAX5954LETX+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 16/22页 |
| 文件大小： | 1027K |
| 描述： | IC PCI EXP/HOT-PLUG CTRLR 36TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 热交换控制器 |
| 应用： | 通用型，PCI Express? |
| 内部开关： | 无 |
| 电源电压： | 3.3V，12V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 36-WFQFN 裸露焊盘 |
| 供应商设备封装： | 36-TQFN 裸露焊盘（6x6） |
| 包装： | 管件 |
Thermal Shutdown
When the die temperature goes above +150癈 (T
SD
), an
overtemperature fault occurs and the MAX5954 shuts
down all outputs. The device waits for the junction temper-
ature to decrease below T
SD
- Hysteresis before entering
fault management (see the Fault Management section).
Fault Management
A fault occurs when an overcurrent lasts longer then
t
FAULT
or when the device experiences an overtemper-
ature condition.
" A fault on a main output (12V or 3.3V) shuts down
both main outputs. The 3.3V auxiliary is not affected.
" A fault on the 3.3V auxiliary output shuts down all
three outputs.
The MAX5954A automatically restarts from a fault shut-
down after the t
RESTART
period, while the MAX5954L
latches off. If an overcurrent fault occurred on a main
output, bring ON low for at least t
RESET
(100祍) and
high again to reset the fault and restart the outputs. If
the overcurrent fault occurred on an auxiliary output or
an overtemperature fault occurred, bring both ON and
AUXON low for a minimum of t
RESET
to reset the fault.
Bring ON and/or AUXON high again to restart the
respective outputs. As an extra protection, the
MAX5954L waits a minimum of t
RESTART
before it can
be restarted.
Debounced Logic Gate
(Input and Output)
INPUT accepts an input from a mechanical switch. The
corresponding output (OUTPUT) is debounced for
4.4ms. When INPUT goes from high to low, OUTPUT
goes low right away and stays low for at least 4.4ms.
After the debounce time OUTPUT follows INPUT. If INPUT
goes from low to high, OUTPUT goes high right away and
Single PCI Express, Hot-Plug
Controller
16 ______________________________________________________________________________________
V
ON_,TH
ON, AUXON
PWRGD
FAULT
12G, 3.3G
12VO, 3.3VO
3.3VAUXO
V
PGTH12
V
PGTH3.3
V
PGTH3.3AUX
3.3AUXIN
RISING
EDGE
PWRGD IS PULLED UP TO 3.3.
FAULT IS PULLED UP TO 3.3AUXIN.
t
POR_HL
Figure 2. Power-Up Timing, No Fault
FAULT
3.3VAUXIN
RISING
EDGE
PWRGD IS PULLED UP TO 3.3VAUXO.
FAULT IS PULLED UP TO 3.3VAUXIN.
A FAULT ON THE 3.3V OUTPUT OR 3.3VAUXO OUTPUT PRODUCES SIMILAR RESULTS.
V
ON_,TH
ON
2 x t
FAULT
PWRGD
12G
12V OUTPUT
CURRENT
3.3VAUXO
V
12ILIM,TH
R
SENSE
Figure 3. 12V Power-Up Timing (Turn-On into Output
Overcurrent/Short Circuit)
FAULT
PWRGD IS PULLED UP TO 3.3VAUXO.
FAULT IS PULLED UP TO 3.3VAUXIN.
A FAULT ON THE 3.3V OUTPUT OR 3.3VAUXO OUTPUT PRODUCES SIMILAR RESULTS.
t
FAULT
PWRGD
12G
12V OUTPUT
CURRENT
V
12ILIM,TH
R
SENSE
Figure 4. 12V Output Overcurrent/Short Circuit During Normal
Operation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5954LETX+ | 功能描述:热插拔功率分布 Single PCIe Hot Plug 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 |
| MAX5954LETX+T | 功能描述:热插拔功率分布 Single PCIe Hot Plug 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 |
| MAX5954LEVCMAXQUSB | 功能描述:电源管理IC开发工具 MAX5954LMAXQUSB EVAL KIT 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 |
| MAX5954LEVKIT | 功能描述:电源管理IC开发工具 Evaluation Kit/Evaluation System for the MAX5954L/MAX5954A 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 |
| MAX5955AEEE | 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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