16
LT4220
4220f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2003
LT/TP 0403 2K • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC
®
1421 Dual Hot Swap Controller Two Circuit Breakers for Supplies from 3V to 12V and Supports –12V
LTC1422 Single Hot Swap Controller in SO-8 Operates from 3V to 12V
LTC1645 Dual Hot Swap Controller Operates from 1.2V to 12V, Allows Supply Sequencing
LTC1647 Dual Hot Swap Controller Operates from 2.7V to 16.5V, Separate ON Pins
LTC4211 Single Hot Swap Controller with Multifunction 2.5V to 16.5V, Active Inrush Limiting, Fast Comparator
Current Control
LTC4230 Triple Hot Swap Controller with Multifunction 1.7V to 16.5V, Active Inrush Limiting, Fast Comparator
Current Control
V
CC
ON
+
C6
1µF
R2
R1
R4
R3
V
EE
V
CC
FAULT
TIMER
GND
TRACK
ON
–
PWRGD
FB
+
R10
R9
V
OUT+
R12
R11
4220 F09
V
OUT
–
R7
10Ω
FB
–
SENSE
+
R
S
+
R
S
–
GATE
+
R6
1k
R5
10Ω
C1
10nF
R8
1k
C2
10nF
C3
100nF
Q1
SUB85N03-04
V
EE
SENSE
–
SENSEK
LT4220
GATE
–
Q2
SUB85N03-04
CONNECT FOR
AUTO RESTART
BACKPLANE
CONNECTOR
STAGGERED
PCB EDGE
CONNECTOR
GND MUST CONNECT FIRST
*TRANSIENT VOLTAGE SUPPRESSOR
GND
POWER GOOD
RPG
5.1k
CL1
CL2
C7
C8
12
11
8
9
6
716 15 14
10
13
5
4321
R14
10Ω
R13
10Ω
Z2*
Z1*
C5
1µF
C4
100nF
ESD
CONTROL
+
+
U
TYPICAL APPLICATIO
Figure 9. Hot Swap Controller on Mainboard with Tracking
