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参数资料
| 型号： | LTC1643HCGN#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封装： | 0.150 INCH, PLASTIC, SSOP-16 |
| 文件页数： | 5/16页 |
| 文件大小： | 278K |
| 代理商： | LTC1643HCGN#PBF |
13
LTC1643L/LTC1643L-1/LTC1643H
APPLICATIONS INFORMATION
WU
U
circuit, PCI bridge chip and the LOCAL_PCI_RESET# logic
circuitry. The BD_SEL# signal is connected to the ON pin
while the PWRGD pin is connected to the HEALTHY#
signal. The HEATHLY# signal is combined with the
PCI_RESET# signal to generate the LOCAL_PCI_RESET#
signal. Capacitors C6 and C7 provide chip bypassing on
the 12V and –12V inputs. Diode D2 protects the part from
voltage surges below –13.2V on the –12V supply.
The 1V precharge voltage for the data bus lines is gener-
ated by an LT1117 low dropout regulator. The output of the
LT1117 is set to 1.8V, then the voltage is dropped by a
1N4148 diode to generate 1V. The precharge circuit is
capable of sourcing and sinking 40mA.
R1
0.005
1%
V(I/O)
Q2
IRF7413
Q1
IRF7413
R2
0.007
1%
R3
10
5%
R4
10
5%
R5
100
5%
C1
0.047
F
5V
5A
MED 5V
MED 3.3V
BD_SEL#
LONG GND
PCI_RST#
I/O
3.3V
7.6A
–12V
100mA
12V
500mA
PRECHARGE OUT
1V
±20%
IOUT = ±40mA
R9 2k 5%
R12 3
5%
R10 2k 5%
R8
1.2k
5%
LOCAL_PCI_RESET#
DATA LINE EXAMPLE
DATA BUS
R14
10
, 5%
11
3
13
12
14
16
15
4
8
10
9
5
6
3VIN
1
2
12V
–12V
12VIN
VEEIN
ON
FAULT
3VSENSE
5VSENSE
3VOUT
LTC1643L
5VOUT
12VOUT
VEEOUT
TIMER
5VIN
GATE
HEALTHY#
7
PWRGD
1643 F07
C2
0.1
F
GND
CompactPCI
CONNECTOR
C6
0.1
F
C5
0.1
F
C3
0.01
F
C4
1
F
D1
1N4148
R13
10k
5%
RESET#
LONG
3.3V
LONG
3.3V
LONG
5V
3.3V
PCI
BRIDGE
(21154)
5V
OUT
IN
ADJ
LT1117
R11
24
5%
R6
130
1%
R7
56.2
1%
I/O
R13
2k
5%
R11
1
5%
D2*
12V
D3*
12V
* BZX84C15 (SOT-23)
VALUE MAY VARY FOR BACKPLANES WITHOUT BYPASS CAPACITANCE
4
3
2
1
4
3
2
1
Figure 7. Typical CompactPCI Application
LTC1643L-1
The LTC1643L-1 is designed for CompactPCI designs
where the
±12V supplies are not being used on the board
or the supplies are not well regulated. The power good
comparators on the 12VOUT and VEEOUT pins are disabled.
The VEEIN pin can be connected to GND and the part will
still operate normally if a – 12VOUT output is not needed.
However, 12V is still required at the 12VIN pin for the part
to function. Refer to Figure 10 for a typical LTC1643L-1
application circuit.
Increasing 12V and – 12V Current Capability
The internal switches in the LTC1643 are designed for up
to 500mA loads on 12V and 200mA on – 12V. If more
current is needed, then the circuits in Figure 8 can be used.
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相关代理商/技术参数 |
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| LTC1643L-1CGN | 制造商:Linear Technology 功能描述: |
| LTC1643LCGN | 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:POWER CONTROL/MANAGEMENT, 16 Pin, Plastic, SSOP |
| LTC1643LCGN#PBF | 制造商:Linear Technology 功能描述:Hot Swap Controller 16-Pin SSOP N |
| LTC1644CGN | 功能描述:IC CONTROLLER HOT SWAP 20-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LTC1644CGN#PBF | 功能描述:IC CONTROLLER HOT SWAP 20-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 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:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
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