LTC1644 Datasheet, PDF (24/24 Pages) Linear Technology – CompactPCI Bus Hot Swap Controller

LTC1644
APPLICATIO S I FOR ATIO
CURRENT FLOW
TO LOAD
SENSE
RESISTOR
3V_IN
3.3V
W
TRACK WIDTH W:
0.03" PER AMPERE
ON 1OZ Cu FOIL
SO-8
CURRENT FLOW
TO LOAD
D
G
D
D
S
S
W
3V_OUT
3.3V
D
S
R3
GATE
R5
C1
VIA/PATH
TO GND
LTC1644*
C_TIMER
CURRENT FLOW
TO SOURCE
VIA TO
GND PLANE
GND
W
GND
*ADDITIONAL DETAILS OMITTED FOR CLARITY
DRAWING IS NOT TO SCALE!
1644 F18
Figure 18. Recommended Layout for Power MOSFET, Sense Resistor and GATE Components for the 3.3V Rail
RELATED PARTS
PART NUMBER
LTC1421
LTC1422
LT1640AL/LT1640AH
LT1641-1/LT1641-2
LTC1642
LTC1643AL/LTC1643AL-1/LTC1643AH
LTC1645
LTC1646
LTC1647
LTC4211
LTC4230
LT4250
LTC4251
DESCRIPTION
Hot Swap Controller
Hot Swap Controller in SO-8
Negative Voltage Hot Swap Controllers in SO-8
Positive Voltage Hot Swap Controller in SO-8
Fault Protected Hot Swap Controller
PCI Bus Hot Swap Controllers
2-Channel Hot Swap Controller
Dual CompactPCI Hot Swap Controller
Dual Hot Swap Controller
Hot Swap Controller with Multifunction Current Control
Triple Hot Swap Controller
– 48V Hot Swap Controller in SO-8
– 48V Hot Swap Controller in SOT-23
24 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^q FAX: [phone] ^q www.linear.com
COMMENTS
Dual Supplies from 3V to 12V, Additionally –12V
Single Supply from 3V to 12V, RESET Output
Negative High Voltage Supplies from –10V to – 80V
Supplies from 9V to 80V, Latch Off/Autoretry
3V to 15V, Overvoltage Protection Up to 33V
3.3V, 5V, 12V, –12V Supplies for PCI Bus
Operates from 1.2V to 12V, Power Sequencing
3.3V, 5V Supplies Only, 1V Precharge, PCI Reset Logic
Dual ON Pins for Supplies from 3V to 15V
Single Supply, 2.5V to 16.5V, MSOP
1.7V to 16.5V Operation, Multifunction Current Control
– 20V to – 80V, Active Current Limiting
Floating Supply, Active Current Limiting and
Fast Circuit Breaker
1644f
LT/TP 0203 2K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2001