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參數資料
| 型號： | MIC2341-2YTQ |
| 廠商： | Micrel Inc |
| 文件頁數： | 5/32頁 |
| 文件大小： | 1277K |
| 描述： | IC HOT PLUG CTLR DUAL PCI 48TQFP |
| 標準包裝： | 250 |
| 類型： | 熱交換控制器 |
| 應用： | 通用型，PCI Express? |
| 內部開關： | 無 |
| 電源電壓： | 3.3V，12V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-TQFP |
| 供應商設備封裝： | 48-TQFP（7x7） |
| 包裝： | 管件 |
| 產品目錄頁面： | 1085 (CN2011-ZH PDF) |
| 其它名稱： | 576-2995 |
第1頁第2頁第3頁第4頁當前第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
Micrel, Inc.
MIC2341/2341R
October 2007
5
M9999-102507-A
(408) 944-0800
Pin Description
Pin Number
Pin Name
Pin Function
5
32
12VINA
12VINB
12V Supply Power and Sense Inputs [A/B]: Two pins are provided for Kelvin
connection (one for each slot). Pin 5 is the (+) Kelvin-sense connection to the
supply side of the sense resistor for 12V Slot A. Pin 32 is the (+) Kelvin-sense
connection to the supply side of the sense resistor for 12V Slot B. These two
pins must ultimately connect to each other as close as possible at the MIC2341
controller in order to eliminate any IR drop between these pins. An undervoltage
lockout circuit (UVLO) prevents the switches from turning on while this input is
lower than its lockout threshold voltage.
12
25
3VINA
3VINB
3.3V Supply Power and Sense Inputs [A/B]: Two pins are provided for
connection (one for each slot). Pin 12 is the (+) Kelvin-sense connection to the
supply side of the sense resistor for 3V Slot A. Pin 25 is the (+) Kelvin-sense
connection to the supply side of the sense resistor for 3V Slot B. These two pins
must ultimately connect to each other as close as possible at the MIC2341
controller in order to eliminate any IR drop between these pins. An undervoltage
lockout circuit (UVLO) prevents the switches from turning on while this input is
lower than its lockout threshold voltage.
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 3.3V Output Power-is-Good status.
10
27
12VOUTA
12VOUTB
12V Power-Good Sense Inputs: Connect to 12V[A/B] outputs. Used to monitor
the 12V output voltages for 12V Output Power-is-Good status.
8
29
12VSENSEA
12VSENSEB
12V Circuit Breaker Sense Input [A/B]: The current limit thresholds are set by
connecting sense resistors between these pins and 12VIN[A/B]. When the 12V
primary overcurrent detector current-limit threshold of 50mV is reached, the
12VGATE[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
or t
DFLT
(whichever is shorter), the circuit breaker is tripped and
the corresponding 12VGATE pin for the affected slot is immediately pulled up to
its corresponding 12VIN to turn OFF the external MOSFET.
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 3V
primary overcurrent detector current-limit threshold of 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
or t
DFLT
(whichever is shorter), the circuit breaker is tripped and
the corresponding 3VGATE pin for the affected slot is immediately pulled down
to AGND to turn OFF the external MOSFET.
3
24
12VGATEA
12VGATEB
12V Gate Drive Outputs [A/B]: Each pin connects to the gate of an external P-
channel power MOSFET. During power-up, the external C
GATE
(if used) and the
C
GS
of the external MOSFETs are connected to a 25礎 current sink. This
controls the value of dv/dt seen at the source of the MOSFETs, and hence the
current flowing into the 12V load capacitance.
During current limit events, the voltage at this pin is adjusted to maintain
constant current through the FET for a period of t
FLT
or t
DFLT
(whichever is
shorter). Whenever an overcurrent, thermal shutdown, or input undervoltage
fault condition occurs, the corresponding 12VGATE pin for the affected slot is
pulled up to its corresponding 12VIN pin to turn OFF the external MOSFET.
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| MIC2341-2YTQ TR | 功能描述:熱插拔功率分布 Dual -Slot PCI Express Hot-Plug Controller RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MIC2341R-2YTQ | 功能描述:熱插拔功率分布 Dual -Slot PCI Express Hot-Plug Controller RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MIC2341R-2YTQ TR | 功能描述:熱插拔功率分布 Dual -Slot PCI Express Hot-Plug Controller RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MIC2342-2YTQ | 功能描述:熱插拔功率分布 Dual -Slot PCI Express Hot-Plug Controller RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MIC2342-2YTQ TR | 功能描述:熱插拔功率分布 Dual -Slot PCI Express Hot-Plug Controller RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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