參數(shù)資料
型號： LTC4244CGN-1
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： Rugged, CompactPCI Bus Hot Swap Controllers
中文描述： 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20
封裝： 0.150 INCH, PLASTIC, SSOP-20
文件頁數(shù)： 1/28頁
文件大?。?/td> 333K
代理商： LTC4244CGN-1
1
LTC4244/LTC4244-1
42441f
APPLICATIOU
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
I
Controls –12V, 3.3V, 5V and 12V Supplies
I
±
14.4V Absolute Maximum Rating for 12V
IN
and –12V
IN
Input Pins
I
Insensitive to Supply Voltage Transients
I
Adjustable Foldback Current Limit with Circuit Breaker
I
LOCAL_PCI_RST# Logic On-Chip
I
PRECHARGE Output Biases I/O Pins During Card
Insertion and Extraction
I
LTC4244-1 Designed for Applications without –12V
I
Available in 20-Lead Narrow SSOP Package
, LTC and LT are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
CompactPCI is a trademark of the PCI Industrial Computer Manufacturers Group.
I
Hot Board Insertion into CompactPCI Bus
The LTC
4244/LTC4244-1 are Hot Swap
TM
controllers that
allow a board to be safely inserted into and removed from
a CompactPCI
TM
bus slot. External N-channel transistors
control the 5V and 3.3V supplies while on-chip switches
control the
±
12V supplies. The 3.3V and 5V supplies can
be ramped up at an adjustable rate. Electronic circuit
breakers protect all four supplies against overcurrent
faults. After the power-up cycle is complete, the TIMER pin
capacitor serves as auxiliary V
CC
allowing the LTC4244/
LTC4244-1 to function without interruption in the pres-
ence of voltage spikes on the 12V
IN
supply. The PWRGD
output indicates when all four supplies are within toler-
ance. The OFF/ON pin is used to cycle board power or reset
the circuit breaker. The PRECHARGE output can be used
to bias the bus I/O pins during card insertion and extrac-
tion. PCI_RST# is combined on-chip with HEALTHY# in
order to generate LOCAL_PCI_RST#.
3.3V
IN
12V
IN
V
EEIN
12V
OUT
OFF/ON
Z4
5V
IN
R4
10
C
LOAD(5VOUT)
V
OUT
5V
5A
V
OUT
3.3V
7A
R5
1k
C1
0.33
μ
F
R3
10
R1
0.005
R2
0.007
Q1
IRF7457
Q2
IRF7457
3.3V
OUT
3.3V
SENSE
GND PRECHARGE
5V
IN
5V
SENSE
DRIVE
R9 24
1V
±
10%
Q3
MMBT2222A
C3 4.7nF
V
3.3V
4244 F01
LTC4244
GATE
5V
OUT
+
C
LOAD(3.3VOUT)
+
V
OUT
12V
500mA
C
LOAD(12VOUT)
+
V
EEOUT
TIMER
RESETOUT
I/O #1
I/O #128
V
–12V
100mA
V
OUT
3.3V
C
LOAD(VEEOUT)
C2
0.082
μ
F
+
Z3
Z2
Z1
R17
10k
3.3V
IN
R22
2.7
C9
0.01
μ
F PER
POWER PIN
C7
0.01
μ
F
C8
0.01
μ
F PER
POWER PIN
R21
1.8
R19 1k
FAULT
PWRGD
RESETIN
R18 10k
R20
1.2k
R16
1
C5
0.01
μ
F
C6
0.01
μ
F
R8 1k
R7 12
R6
10k
R10 18
R11
10k
R13
10
R14
10
R12
10k
R15
1
C4
0.01
μ
F
I/O DATA LINE 1
I/O DATA LINE 128
Z1, Z2: SMAJ12A
Z3, Z4: SMAJ5.0A
I/O PIN 128
RESET#
PCI
BRIDGE
CHIP
I/O PIN 1
GROUND
PCI_RST#
LOCAL_PCI_RST#
HEALTHY#
LONG V(I/O)
BD_SEL#
–12V
12V
LONG 3.3V
LONG 5V
3.3V
5V
Figure 1. Typical Compact PCI Application
Rugged, CompactPCI Bus
Hot Swap Controllers
相關(guān)PDF資料
PDF描述
LTC4244IGN Rugged, CompactPCI Bus Hot Swap Controllers
LTC4244IGN-1 Rugged, CompactPCI Bus Hot Swap Controllers
LTC4244CGN Rugged, CompactPCI Bus Hot Swap Controllers
LTC4252-1 TRANS ARRAY NPN/PNP SS MINI-6P
LTC4252 Negative 48V Hot Swap Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4244CGN-1#PBF 功能描述:IC CTRLR HOTSWAP PCI 20-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:119 系列:- 類型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開關(guān):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(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤 產(chǎn)品目錄頁面:1423 (CN2011-ZH PDF)
LTC4244CGN-1#TR 功能描述:IC CTRLR HOT SWAP CPCI 20-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:119 系列:- 類型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開關(guān):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(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤 產(chǎn)品目錄頁面:1423 (CN2011-ZH PDF)
LTC4244CGN-1#TRPBF 功能描述:IC CTRLR HOTSWAP PCI 20-SSOP RoHS:是 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
LTC4244IGN 功能描述:IC CTRLR HOT SWAP CPCI 20-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:119 系列:- 類型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開關(guān):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(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤 產(chǎn)品目錄頁面:1423 (CN2011-ZH PDF)
LTC4244IGN#PBF 功能描述:IC CTRLR HOTSWAP PCI 20-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:119 系列:- 類型:熱交換控制器 應(yīng)用:通用型，PCI Express? 內(nèi)部開關(guān):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(yīng)商設(shè)備封裝:80-TQFP（12x12） 包裝:托盤 產(chǎn)品目錄頁面:1423 (CN2011-ZH PDF)
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