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參數(shù)資料
| 型號： | MIC2593 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Dual-Slot PCI Hot Plug Controller |
| 中文描述： | 雙插槽的PCI熱插拔控制器 |
| 文件頁數(shù)： | 5/26頁 |
| 文件大小： | 170K |
| 代理商： | MIC2593 |
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April 2004
5
M9999-042204
MIC2593
Micrel
Pin Description (cont)
Pin Number
Pin Name
Pin Function
13
24
3VSENSEA
3VSENSEB
3V Circuit Breaker Sense Input [A/B]: The current limit thresholds are set by
connecting sense resistors between these pins and 3VIN[A/B]. When the
current limit threshold of IR = 50mV is reached, the 3VGATE[A/B] pin is
modulated to maintain a constant voltage across the sense resistor and
therefore a constant current into the load. If the 50mV threshold is exceeded
for t
FLT
(see CFILTER[A/B] pin description), the circuit breaker is tripped
and the GATE pin for the affected supply
’
s external MOSFET is immediately
pulled low.
16
21
3VOUTA
3VOUTB
3.3V Power-Good Sense Inputs: Connect to 3.3V[A/B] outputs. Used to
monitor the 3.3V output voltages for Power-is-Good status.
14
23
3VGATEA
3VGATEB
3V Gate Drive Output [A/B]: Each pin connects to the gate of an external
N-channel MOSFET. During power-up, the C
GATE
and the C
GS
of the
MOSFETs are connected to a 25
μ
A current source. This controls the value
of dv/dt seen at the source of the MOSFETs, and hence the current flowing
into the load capacitance.
During current limit events, the voltage at this pin is adjusted to maintain
constant current through the switch for a period of t
FLT
. Whenever an
overcurrent, thermal shutdown, or input undervoltage fault condition occurs,
the GATE pin for the affected slot is immediately brought low. During power
down, these pins are discharged by an internal current source.
11
26
VSTBYA
VSTBYB
3.3V Standby Input Voltage: Required to support PCI VAUX output.
Additionally, the SMBus logic and internal registers run off of VSTBY[A/B]
to ensure that the MIC2593 is accessible during standby modes. A UVLO
circuit prevents turn-on of this supply until VSTBY[A/B] rises above its UVLO
threshold. Both pins must be connected together externally at the IC.
15
22
VAUXA
VAUXB
3.3VAUX[A/B] Output to PCI Card Slot: These outputs connect
the 3.3AUX pin of the PCI connectors to VSTBY[A/B] via internal
400m
MOSFETs. These outputs are current limited and protected against
short-circuit faults.
44
43
ONA
ONB
Enable Inputs: Rising-edge triggered. Used to enable or disable the MAINA
and MAINB (5V, 3.3V, +12V and
–
12V) outputs. Taking ON[A/B] low after a
fault resets the 5V, 3.3V, +12V and/or
–
12V fault latches for the affected slot.
Tie these pins to GND if using SMI power control. Also, see pin description
for /FAULTA and /FAULTB.
45
42
AUXENA
AUXENB
Enable Inputs: Rising-edge triggered. Used to enable or disable VAUXA and
VAUXB outputs. Taking AUXEN[A/B] low after a fault resets the respective
slot
’
s Aux Output Fault Latch. Tie these pins to GND if using SMI power
control. Also, see pin description for /FAULTA and /FAULTB.
2
35
CFILTERA
CFILTERB
Overcurrent Timer (Filter) Capacitor [A/B]: Capacitors connected between
these pins and GND set the duration of t
FLT
. t
FLT
is the amount of time for
which a slot remains in current limit before its circuit breaker is tripped.
1
36
/FAULTA
/FAULTB
/FAULT[A/B] Outputs: Open-drain, active-low. Asserted whenever the
circuit breaker trips due to a fault condition (overcurrent, input undervoltage,
overtemperature). Each pin requires an external pull-up resistor to VSTBY.
Bringing the slot
’
s ON[A/B] pin low resets /FAULT[A/B] if /FAULT[A/B]
was asserted in response to a fault condition on one of the slot
’
s MAIN
outputs (5V, 3.3V, +12V, or
–
12V).
/FAULT[A/B] is reset by bringing the slot
’
s AUXEN[A/B] pin low if
/FAULT[A/B] was asserted in response to a fault condition on the slot
’
s V
AUX
output. If a fault condition occurred on both the MAIN and VAUX[A/B]
outputs of the same slot, then both ON[A/B] and AUXEN[A/B] must be
brought low to de-assert the /FAULT[A/B] output.
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| MIC2593-2BTQ | 功能描述:IC CTRLR HOTPLUG PCI DUAL 48TQFP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| MIC2593-2BTQ TR | 功能描述:IC PCI HOT PLUG CTLR DUAL 48TQFP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| MIC2593-2YTQ | 功能描述:熱插拔功率分布 Dual-slot PCI Hot Swap Power Controller w/o IPMI support - Lead Free 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 |
| MIC2593-2YTQ TR | 功能描述:熱插拔功率分布 Dual-slot PCI Hot Swap Power Controller w/o IPMI support - Lead Free 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 |
| MIC2594-1BM | 功能描述:IC CTRLR HOT SWAP NEG HV 8-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
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