LTC4244IGN#TR Linear Technology, LTC4244IGN#TR Datasheet - Page 18

• Manufacturer Part Number: LTC4244IGN#TR
• Description: IC CTRLR HOT SWAP CPCI 20-SSOP
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LTC4244IGN#TR

• Applications: CompactPCI™
• Internal Switch(s): No
• Voltage - Supply: 3.3V, 5V, ±12V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP (0.154", 3.91mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LTC4244/LTC4244-1
APPLICATIO S I FOR ATIO
18
I/O PIN 128
LONG 5V
BD_SEL#
GROUND
Figure 7. Precharge Voltage <1V Application Circuit
I/O PIN 1
GND
*ADDITIONAL DETAILS OMITTED FOR CLARITY
8
5V
PRECHARGE OUT
R10A
V
PRECHARGE
4.7nF
CONNECTOR
BACKPLANE
LTC4244*
R10B
18
PRECHARGE
5%
U
Figure 9. Precharge Bus Switch Application Circuit for 3.3V and Universal Hot Swap Boards
=
R10A + R10B
12
CONNECTOR
R10A
BACKPLANE
PCB EDGE
U
DRIVE
MMBT2222A
• 1V
11
Q3
Z4: SMAJ5.0A
*ADDITIONAL DETAILS OMITTED FOR CLARITY
DATA BUS
W
C7
0.01 F
2.7
R22
12
5%
5%
1k
C9
0.01 F PER
POWER PIN
Z4
U
5V
3.3V
4244 F07
51.1k 5%
IN
R23
IN
R20
1.2k
5%
R24
75k
5%
Q2
MMBT3906
1k 5%
R19
100
13
5
0.1 F
R13
10
R14
10
5%
5%
5V
OFF/ON
Figure 8. Precharge Voltage >1V Application Circuit
GND
IN
*ADDITIONAL DETAILS OMITTED FOR CLARITY
8
GND
R10A
8
PRECHARGE
18 5%
V
R10
PRECHARGE
OE
PRECHARGE
12
OUT
V
BUS SWITCH
PRECHARGE OUT
LTC4244*
R10B
DD
R11
10k
5%
4.7nF
12
=
LTC4244*
R10A + R10B
24
OUT
R9
IN
18
UP TO 128 I/O LINES
5%
R10A
R12
10k
5%
C3 4.7nF
DRIVE
MMBT2222A
• 1V
PRECHARGE OUT
11
MMBT2222A
I
Q3
OUT
1V 10%
DRIVE
Q3
= 55mA
11
12
5%
5%
1k
I/O
I/O
12 5%
1k 5%
R8
R7
BRIDGE
CHIP
3.3V
PCI
4244 F08
IN
3V
4244 F09
IN
42441f