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參數(shù)資料
| 型號(hào)： | MAX5946LETX |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Dual PCI Express, Hot-Plug Controller |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, QCC36 |
| 封裝： | 6 X 6 MM, 0.90 MM HEIGHT, MO-220, QFN-36 |
| 文件頁數(shù)： | 15/23頁 |
| 文件大?。?/td> | 1019K |
| 代理商： | MAX5946LETX |
Startup
The main supply outputs can become active only after
all the following events have occurred:
V
3.3VAUXIN
is above its UVLO threshold
V
12VIN
and V
3.3SA+
are both above their UVLO
threshold
ON_ is driven high
PRES-DET_
is low for more than 4ms
The auxiliary supply output is made available only after
the following events have occurred:
V
3.3VAUXIN
is above its UVLO threshold
AUXON_ is driven high
PRES-DET_
is low for more than 4ms
The
FON_
input overrides all other control signals and
turns on the respective slot when driven low, as long as
the UVLO thresholds have been reached. Table 2 sum-
marizes the logic conditions required for startup.
The auxiliary supply input powers the internal control
logic and analog references of the MAX5946, so the
main supplies cannot be enabled if V
3.3VAUXIN
is not
present.
When an output is enabled, a programmable startup
timer (t
SU
) begins to count the startup time duration.
The value of t
SU
is set to 2x the fault timeout period
(t
FAULT
). R
TIM
externally connected from TIM to GND
sets the duration of t
FAULT
.
M
Dual PCI Express, Hot-Plug
Controller
______________________________________________________________________________________
15
Table 1. Power Requirements for PCI Express Connectors
POWER RAIL
X1 CONNECTOR
X4/8 CONNECTOR
X16 CONNECTOR
3.3V
Voltage Tolerance
Supply Current
Capacitive Load
12V
Voltage Tolerance
Supply Current
Capacitive Load
3.3V AUXILIARY
Voltage Tolerance
Supply Current
Wake Enabled
375mA (max)
Non-Wake Enabled,
Capacitive Load
±9% (max)
3.0A (max)
1000μF (max)
±9% (max)
3.0A (max)
1000μF (max)
±9% (max)
3.0A (max)
1000μF (max)
±8% (max)
0.5A (max)
300μF (max)
±8% (max)
2.1A (max)
1000μF (max)
±8% (max)
5.5A (max)
2000μF (max)
±9% (max)
375mA (max)
20mA (max)
±9% (max)
375mA (max)
20mA (max)
±9% (max)
375mA (max)
20mA (max)
150μF (max)
150μF (max)
150μF (max)
Table 2. Control Logic Truth Table
ON_
AUXON_
FON_
PRES-DET_
12V_ AND 3.3V_
OUTPUTS
3.3VAUXO_
AUXILIARY
OUTPUTS
X
X
X
X
Low
High
High
High
High
High
X
On
Off
Off
On
Off
On
On
Off
Off
Off
On
On
High
Low*
Low*
Low*
Low*
Low
High
Low
High
Low
Low
High
High
*
PRES-DET_
high-to-low transition has a 4ms delay (t
DEG
).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5946LETX+ | 功能描述:熱插拔功率分布 Dual PCIe Hot-Plug Controller RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5946LETX+T | 功能描述:熱插拔功率分布 Dual PCIe Hot-Plug Controller RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5946LETX-T | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5946LEVKIT | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5947AESA | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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