28
LTC4244/LTC4244-1
42441f
PART NUMBER DESCRIPTION COMMENTS
LTC1421 Hot Swap Controller Dual Supplies from 3V to 12V, Additional –12V
LTC1422 Hot Swap Controller Single Supply Hot Swap in SO-8 from 3V to 12V
LT1640AL/LT1640AH Negative Voltage Hot Swap Controllers in SO-8 Negative High Voltage Supplies from –10V to –80V
LT1641-1/LT1641-2 Positive Voltage Hot Swap Controllers in SO-8 Supplies from 9V to 80V, Latch Off/Autoretry
LTC1642 Fault Protected Hot Swap Controller 3V to 15V, Overvoltage Protection Up to 33V
LTC1643AL/LTC1643AL-1 PCI Bus Hot Swap Controllers 3.3V, 5V, 12V, –12V Supplies for PCI Bus
LTC1643AH
LTC1644 Compact PCI Bus Hot Swap Controller 3.3V, 5V, ±12V, Local Reset Logic and Precharge
LTC1645 2-Channel Hot Swap Controller Operates from 1.2V to 12V, Power Sequencing
LTC1646 Dual CompactPCI Hot Swap Controller 3.3V, 5V Supplies Only
LTC1647 Dual Hot Swap Controller Dual ON Pins for Supplies from 3V to 15V
LTC4211 Hot Swap Controller with Multifunction Current Control Single Supply, 2.5V to 16.5V, MSOP
LTC4240 CompactPCI Hot Swap Controller I
2
C Interface Allows Control and Readback of Device Functions
LT4250 –48V Hot Swap Controller in SO-8 –20V to –80V, Active Current Limiting
LTC4251 –48V Hot Swap Controller in SOT-23 Floating Supply, Active Current Limiting and Fast Circuit Breaker
LT/TP 0204 1K • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2003
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
RELATED PARTS
TYPICAL APPLICATIO
U
3.3V
IN
12V
IN
12V
OUT
V
EEIN
OFF/ON
Z4
5V
IN
R4
10Ω
C
LOAD(5VOUT)
V
OUT
5V
5A
V
OUT
3.3V
7A
R5
1k
C1
0.33µF
R3
10Ω
R1
0.005Ω
R2
0.007Ω
Q1
IRF7457
Q2
IRF7457
3.3V
OUT
3.3V
SENSE
GND PRECHARGE
5V
IN
5V
SENSE
DRIVE
R9 24Ω
1V
±10%
Q3
MMBT2222A
C3 4.7nF
V
IN
3.3V
4244 F17
LTC4244-1
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
OUT
3.3V
C2
0.082µF
Z3
Z2
R17
10k
3.3V
IN
R22
2.7Ω
C9
0.01µF PER
POWER PIN
C7
0.01µF
C8
0.01µF PER
POWER PIN
R21
1.8Ω
R19 1k
FAULT
PWRGD
RESETIN
R18 10k
R20
1.2k
R8 1k
R7 12Ω
R6
10k
R10 18Ω
R11
10k
R13
10Ω
R14
10Ω
•
•
•
•
•
•
•
•
•
R12
10k
R15
1Ω
C4
0.01µF
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
LONG 3.3V
LONG 5V
3.3V
5V
Figure 17. Typical LTC4244-1 Application
