ltc4221 Linear Technology Corporation, ltc4221 Datasheet - Page 26

• Manufacturer Part Number: ltc4221
• Description: Dual Hot Swap Controller/power Sequencer With Dual Speed, Dual Level Fault Protection
• Manufacturer: Linear Technology Corporation

LTC4221
TYPICAL APPLICATIO S
V
V
V
V
26
3.3V
2.5V
3.3V
2.5V
CC1
CC2
CC1
CC2
GND
GND
CONNECTOR
CONNECTOR
BACKPLANE
BACKPLANE
(FEMALE)
(FEMALE)
CONNECTOR
CONNECTOR
PCB EDGE
PCB EDGE
(MALE)
(MALE)
LONG
LONG
LONG
LONG
LONG
LONG
Z1, Z2: SMAJ10
Z1, Z2: SMAJ10
Simultaneous Turn-On with Autoretry Function—Linked Current Limits
16.5k
4.22k
21k
10k
Z1
Z1
R2
R1
R2
R1
U
C
470nF
TIMER
R
10Ω
R
10Ω
C
X1
C
100nF
470nF
X1
TIMER
C
100nF
X1
X1
R4
10k
12.4k
R3
Z2
Z2
C
C
FILTER
100nF
FILTER
100nF
R3
14.3k
1nF
C
C
1nF
Sequenced Turn-On
X2
X2
R
10Ω
R
10Ω
16
10
16
10
X2
X2
1
7
9
8
1
7
9
8
ON1
ON1
ON2
FAULT
GND
TIMER
FILTER
ON2
FAULT
GND
TIMER
FILTER
V
V
CC1
CC1
2
2
R
R
0.004Ω
0.004Ω
SENSE1
SENSE1
SENSE1 GATE1 V
SENSE1 GATE1 V
3
3
IRF7413
IRF7413
LTC4221
LTC4221
Q1
Q1
4
4
CC2
CC2
15
15
R
R
0.004Ω
0.004Ω
SENSE2
SENSE2
SENSE2 GATE2
SENSE2 GATE2
14
14
PWRGD2
PWRGD1
PWRGD2
PWRGD1
IRF7413
IRF7413
Q2
Q2
FB2
FB1
FB2
FB1
13
13
12
11
6
5
12
11
6
5
14.3k
5.11k
14.3k
5.11k
R
R
R
R
F3
F4
F3
F4
R
10k
R
10k
PG2
PG2
R
20k
R
5.11k
R
20k
R
5.11k
4221 TA03
4221 TA04
F1
F2
F1
F2
R
10k
PG1
V
3.3V
5A
V
2.5V
5A
PWRGD2
PWRGD1
V
3.3V
5A
V
2.5V
5A
PWRGD2
OUT1
OUT2
OUT1
OUT2
4221fa