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參數資料
| 型號： | LTC1646IGN#TR |
| 廠商： | Linear Technology |
| 文件頁數： | 6/20頁 |
| 文件大?。?/td> | 407K |
| 描述： | IC CNTRLR HOTSWAP PCIDUAL 16SSOP |
| 標準包裝： | 2,500 |
| 類型： | 熱交換控制器 |
| 應用： | CompactPCI? |
| 內部開關： | 無 |
| 電源電壓： | 3.3V，5V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-SSOP |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | LTC1646IGNTR |
LTC1646
6
1646fa
PWRGD (Pin 4) :Open Drain Power Good Digital Output.
Connect the CPCI HEALTHY# signal to the PWRGD pin.
PWRGD remains low while V
3VOUT
e 2.9V and V
5VOUT
e
4.65V. When either of the supplies falls below its power
good threshold voltage, PWRGD will go high after a 50祍
deglitching time.
5V
OUT
(Pin 5): 5V Output Sense. The PWRGD pin will not
pull low until the 5V
OUT
pin voltage exceeds 4.65V. If no 5V
input supply is available, tie the 5V
OUT
pin to the 3V
OUT
pin
in order to disable the 5V
OUT
power good function.
GND (Pin 6): Chip Ground
3V
OUT
(Pin 7): 3.3V Output Sense. The PWRGD pin will not
pull low until the 3V
OUT
pin voltage exceeds 2.90V. If no
3.3V input supply is available, tie the 3V
OUT
pin to the
5V
OUT
pin.
3V
IN
(Pin 8): 3.3V Supply Sense Input. An undervoltage
lockout circuit prevents the switches from turning on
when the voltage at the 3V
IN
pin is less than 2.5V. If no 3.3V
input supply is available, connect a diode between 5V
IN
and 3V
IN
(tie anode to 5V
IN
and cathode to 3V
IN
). See
Figure 11.
RESETOUT (Pin 1): Open Drain Digital Output. Connect
the CPCI LOCAL_PCI_RST# signal to the RESETOUT pin.
RESETOUT is the logical combination of RESETIN and
PWRGD (see Table 4).
TIMER (Pin 2): Current Fault Inhibit Timing Input. Connect
a capacitor from TIMER to GND. With the chip turned off,
the TIMER pin is internally held at GND. When the chip is
turned on, a 5礎 pull-up current source is connected to
TIMER. Current limit and voltage compliance faults will be
ignored until the voltage at the TIMER pin is greater than
1.25V.
FAULT (Pin 3): Open Drain Digital I/O. FAULT is pulled low
when a current limit fault is detected. Faults are ignored
while the voltage at the TIMER pin is less than 1.25V. Once
the TIMER cycle is complete, FAULT will pull low and the
chip will latch off in the event of an overcurrent fault. The
chip will remain latched in the off state until the OFF/ON pin
is cycled high then low or the power is cycled.
Forcing the FAULT pin low with an external pull-down will
cause the chip to be latched into the off state after a 21祍
deglitching time.
TYPICAL PERFOR A CE CHARACTERISTICS
W
RESETOUT, PWRGD and FAULT
Output Low Voltage vs I
SINK
5V
OUT
/3V
OUT
Discharge
Impedance vs Temperature
50 25
0
25
50
75 100
TEMPERATURE (癈)
1646 G23
180
160
140
120
100
80
60
40
20
0
0
1
2
3
4
5
I
SINK
(mA)
1646 G22
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
90癈
25癈
45癈
U
U
PI FU CTIO S
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相關代理商/技術參數 |
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| LTC1647-1CS8 | 功能描述:IC CONTROLLR HOTSWAP DUAL 8-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:100 系列:- 類型:熱插拔開關 應用:通用 內部開關:是 電流限制:可調 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 供應商設備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| LTC1647-1CS8#PBF | 功能描述:IC CTLR HOTSWAP DUAL 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:119 系列:- 類型:熱交換控制器 應用:通用型，PCI Express? 內部開關:無 電流限制:- 電源電壓:3.3V，12V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-TQFP 供應商設備封裝:80-TQFP（12x12） 包裝:托盤 產品目錄頁面:1423 (CN2011-ZH PDF) |
| LTC1647-1CS8#TR | 功能描述:IC CONTROLLER HOTSWAP DUAL 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:100 系列:- 類型:熱插拔開關 應用:通用 內部開關:是 電流限制:可調 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 供應商設備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| LTC1647-1CS8#TRPBF | 功能描述:IC CONTROLLR HOTSWAP DUAL 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:100 系列:- 類型:熱插拔開關 應用:通用 內部開關:是 電流限制:可調 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 供應商設備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| LTC1647-1IS8 | 功能描述:IC CONTROLLER HOTSWAP DUAL 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:100 系列:- 類型:熱插拔開關 應用:通用 內部開關:是 電流限制:可調 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 供應商設備封裝:10-TDFN-EP（3x3） 包裝:管件 |
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