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参数资料
| 型号： | MAX5957AETN+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 13/25页 |
| 文件大小： | 634K |
| 描述： | IC TRPL PCI EXP/HOT-PLUG 56-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 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： | 56-WFQFN 裸露焊盘 |
| 供应商设备封装： | 56-TQFN-EP（7x7） |
| 包装： | 带卷 (TR) |
Triple PCI Express, Hot-Plug Controllers
______________________________________________________________________________________ 13
Pin Description (continued)
PIN
NAME
FUNCTION
41
3.3SA+
Slot A 3.3V Positive Current-Sense Input. Connect the positive side of the current-sense resistor to
3.3SA+ using the Kelvin-sensing technique to ensure accurate current sensing.
42
3.3SA-
Slot A 3.3V Negative Current-Sense Input. Connect to the negative side of the sense resistor using
the Kelvin-sensing technique to ensure accurate current sensing.
43
3.3GA
Slot A 3.3V Gate-Drive Output. Connect 3.3GA to the gate of slot A s 3.3V MOSFET. At power-up,
V
3.3GA
is charged to 5.5V above the 3.3V supply by a constant current derived from V
12VIN
.
V
3.3GA
s rise time is determined by the external gate capacitance.
44
FAULTA
Open-Drain Fault Output Signal. FAULTA latches active low whenever slot A outputs are shut down
due to a fault. A fault is either of:
" An overcurrent condition lasting longer than the overcurrent timeout.
" A device overtemperature condition.
If the fault is detected in the main outputs, FAULTA must be reset by toggling the ONA input. If the
fault is in the auxiliary output, FAULTA must be reset by toggling both ONA and AUXONA. For the
autorestart version, FAULTA is reset when the part initiates the next power-on cycle.
45
PWRGDA
Open-Drain Power-Good Output. PWRGDA goes low 160ms after all outputs of slot A reach their
final value and the power MOSFETs are fully enhanced.
47
3.3AUXOA Slot A 3.3V Auxiliary Power-Supply Output
50
3.3AUXOB Slot B 3.3V Auxiliary Power-Supply Output
51
PWRGDB
Open-Drain Power-Good Output. PWRGDB goes low 160ms after all outputs of slot B reach their
final value and the power MOSFETs are fully enhanced.
52
FAULTB
Open-Drain Fault Output Signal. FAULTB latches active low whenever the slot B outputs are shut
down due to a fault. A fault is either of:
" An overcurrent condition lasting longer than the overcurrent timeout.
" A device over temperature condition.
If the fault is detected in the main outputs, FAULTB must be reset by toggling the ONB input. If the
fault is in the auxiliary output, FAULTB must be reset by toggling both ONB and AUXONB. For the
autorestart version, FAULTB is reset when the part initiates the next power-on cycle.
53
3.3GB
Slot B 3.3V Gate-Drive Output. Connect 3.3GB to the gate of slot Bs 3.3V MOSFET. At power-up,
V
3.3GB
is charged to 5.5V above the 3.3V supply by a constant current derived from V
12VIN
.
V
3.3GB
s rise time is determined by the external gate capacitance.
54
3.3SB-
Slot B 3.3V Negative Current-Sense Input. Connect to the negative side of the sense resistor using
the Kelvin-sensing technique to ensure accurate current sensing.
55
3.3SB+
Slot B 3.3V Positive Current-Sense Input. Connect the positive side of the current-sense resistor to
3.3SB+ using the Kelvin-sensing technique to ensure accurate current sensing.
56
12GB
Slot B 12V Gate-Drive Output. Connect 12GB to the gate of slot Bs 12V MOSFET. At power-up,
V
12GB
is raised to the internal charge-pump voltage level by a constant current.
Detailed Description
The MAX5957/MAX5958 triple hot-plug controllers are
designed for PCIe applications. The devices provide
hot-plug control for 12V, 3.3V, and 3.3V auxiliary sup-
plies for three PCIe slots. The MAX5957/MAX5958s
logic inputs/outputs allow interfacing directly with the
system hot-plug-management controller or through an
SMBus with an external I/O expander. An integrated
debounced attention switch and present-detect signals
are included to simplify system design (Figure 1).
The MAX5957/MAX5958 drive six external n-channel
MOSFETs to control the 12V and 3.3V main outputs.
The 3.3V auxiliary outputs are controlled through inter-
nal 0.2& n-channel MOSFETs. Internal charge pumps
provide a gate drive for the 12V outputs while the gate
drive of the 3.3V output is driven by the 12V input sup-
ply. The 3.3V auxiliary outputs are completely indepen-
dent from the main outputs with their own charge
pumps.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5957LETN+ | 功能描述:热插拔功率分布 Triple 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 |
| MAX5957LETN+T | 功能描述:热插拔功率分布 Triple 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 |
| MAX5958AETN+ | 功能描述:热插拔功率分布 Triple 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 |
| MAX5958AETN+T | 功能描述:热插拔功率分布 Triple 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 |
| MAX5958LETN+ | 功能描述:热插拔功率分布 Triple 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 |
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