ltc4221 Linear Technology Corporation, ltc4221 Datasheet - Page 28

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

TYPICAL APPLICATIO
RELATED PARTS
LTC4221
PART NUMBER
LTC1421
LTC1422
LTC1642
LTC1643AL/LTC1643AH PCI Hot Swap Controllers
LTC1645
LTC1647
LTC4210
LTC4211
LTC4230
LTC4251
LTC4252
LTC4253
28
0V TO 3.3V
3.3V TO 0V
V
V
FAULT
3.3V
2.5V
CC1
CC2
ON
OR
GND
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
CONNECTOR
BACKPLANE
(FEMALE)
●
D1: 1N4148
Z1, Z2: SMAJ10
FAX: [phone]
DESCRIPTION
2-Channel, Hot Swap Controller
Single Channel, Hot Swap Controller in SO-8
Fault Protected, Hot Swap Controller
Dual Channel Hot Swap Controller
Dual Channel, Hot Swap Controller
Single Channel, Hot Swap Controller in SOT-23
Single Channel, Hot Swap Controller in MSOP
Triple Channel, Hot Swap Controller
–48V Hot Swap Controller in S0T-23
–48V Hot Swap Controller in MSOP
–48V Hot Swap Controller and Sequencer
CONNECTOR
PCB EDGE
(MALE)
LONG
LONG
SHORT
SHORT
LONG
U
●
12.1k
20.5k
23.7k
C
www.linear-tech.com
470nF
TIMER
Sequenced Up/Down, Channel 2 Up First, Down Last
R3
R2
R1
Z1
R
10Ω
X1
9.53k
C
100nF
X1
R4
23.2k
R5
Z2
C
FILTER
1nF
R6
10k
D1
R
10Ω
X2
C
100nF
X2
ON1
ON2
FAULT
GND
TIMER
FILTER
V
CC1
COMMENTS
24-Pin, Operates from 3V to 12V and Supports –12V
Operates from 2.7V to 12V, System Reset Output
Operates up to 16.5V, Overvoltage Protection to 33V
3.3V, 5V and ±12V Supplies
Operates from 1.2V to 12V, Power Sequencing
Operates from 2.7V to 16.5V
Operates from 2.7V to 16.5V, Multifunction Current Control
2.5V to 16.5V, Multifunction Current Control
1.7V to 16.5V, Multifunction Current Control
–48V Hot Swap Controller, Active Current Limiting
Active Current Limiting With Drain Acceleration
Active Current Limiting With Drain Acceleration and Three
Sequenced Power Good Outputs
R
0.004Ω
SENSE1
SENSE1 GATE1 V
IRF7413
LTC4221
Q1
CC2
R
0.004Ω
SENSE2
SENSE2 GATE2
© LINEAR TECHNOLOGY CORPORATION 2004
PWRGD2
PWRGD1
IRF7413
LT 0707 REV A • PRINTED IN THE USA
Q2
FB2
FB1
14.3k
5.11k
R
R
F3
F4
4221 TA06
R
20k
R
5.11k
F1
F2
V
3.3V
5A
V
2.5V
5A
OUT1
OUT2
4221fa