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LTC1646IGN Datasheet(PDF) 15 Page - Linear Technology

Part # LTC1646IGN
Description  CompactPCI Dual Hot Swap Controller
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1646IGN Datasheet(HTML) 15 Page - Linear Technology

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LTC1646
15
1646fa
Figure 10. 3.3V Supply Only Typical Application
Figure 8. Precharge Voltage <1V Application Circuit
APPLICATIO S I FOR ATIO
MMBT2222A
4.7nF
18
Ω
18
Ω
10
Ω
10
Ω
3k
3k
1k
0.005
Ω
1%
1k
12
Ω
1k
10k
1k
3k
1.2k
3VIN
PRECHARGE OUT
1V
±10%
IOUT = ± 55mA
3VIN
3VIN 3VSENSE
5VSENSE
3VOUT
3VOUT
5VOUT
3.3V
5VIN
RESET#
I/O
PCI
BRIDGE
(21154)
DATA BUS
DATA LINE EXAMPLE
V(I/O)
V(I/O)
0.1
µF
0.1
µF
0.010
µF
IRF7413
3.3VOUT
7.6A
GATE
GND
PRECHARGE
DRIVE
RESETOUT
TIMER
OFF/ON
FAULT
PWRGD
RESETIN
LTC1646
15
89
10
7
12
11
5
2
1
613
14
3
4
16
1646 F10
Z1: BZX84C6V2
Z1
DATA BUS
BD_SEL#
HEALTHY#
PCI_RST#
COMPACT PCI
BACKPLANE
CONNECTOR
(MALE)
COMPACT PCI
CIRCUIT CARD
CONNECTOR
(FEMALE)
3.3V
LONG 3.3V
GROUND
I/O PIN 1
4
3
2
1
1.8
Ω
MMBT2222A
4.7nF
18
Ω
R1
R2
1k
12
Ω
3VIN
PRECHARGE OUT
1646 F08
GND
PRECHARGE DRIVE
LTC1646*
613
14
*ADDITIONAL DETAILS OMITTED FOR CLARITY
VPRECHARGE =
• 1V
R1
R1 + R2
MMBT2222A
4.7nF
18
Ω
R1
R2
1k
12
Ω
3VIN
PRECHARGE OUT
1646 F09
GND
PRECHARGE
DRIVE
LTC1646*
613
14
*ADDITIONAL DETAILS OMITTED FOR CLARITY
VPRECHARGE =
• 1V
R1 + R2
R1
Figure 9. Precharge Voltage >1V Application Circuit
Other CompactPCI Applications
The LTC1646 can be easily configured for applications
where no 5V supply is present by simply tying the 5VIN and
5VSENSE pins to the 3VIN pin and tying the 5VOUT pin to the
3VOUT pin (Figure 10).
Table 5. R1 and R2 Resistor Values vs Precharge Voltage
VPRECHARGE
R1
R2
VPRECHARGE
R1
R2
1.5V
18
Ω
9.09
Ω
0.9V
16.2
Ω
1.78
Ω
1.4V
18
Ω
7.15
Ω
0.8V
14.7
Ω
3.65
Ω
1.3V
18
Ω
5.36
Ω
0.7V
12.1
Ω
5.11
Ω
1.2V
18
Ω
3.65
Ω
0.6V
11
Ω
7.15
Ω
1.1V
18
Ω
1.78
Ω
0.5V
9.09
Ω
9.09
Ω
1V
18
Ω
0
Ω



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