Datasheet 搜索 > ADI（亚德诺） > LT4220IGN#PBF 数据手册 > LT4220IGN#PBF 数据手册 1/16 页
器件3D模型￥ 16.469
LT4220IGN#PBF 数据手册 - ADI（亚德诺）
制造商:
ADI（亚德诺）
封装:
SSOP
描述:
LT4220IGN#PBF 热插拔控制器
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
典型应用电路图在P14
焊盘布局在P15
技术参数、封装参数在P4
电气规格在P3P4
导航目录
LT4220IGN#PBF数据手册
Page:
of 16 Go
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1
LT4220
4220f
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
Dual Supply
Hot Swap Controller
■
Hot Swap
TM
Controller for Positive
and Negative Supplies
■
Supply Tracking Mode
■
±2.7V to ±16.5V Operation
■
Analog Current Limit with Foldback
■
Allows Safe Board Insertion and Removal
from a Live Backplane
■
Open-Collector Power Good Comparators
■
Automatic Retry or Latchoff After a Current Fault
■
Dual Undervoltage Lockout Comparator Inputs
■
Current Fault Indication
■
Live Board Insertion
■
RAID Systems
■
–5.2V ECL Supplies
■
Industrial Controls
■
Split Supply Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
The LT
®
4220 16-pin dual voltage Hot Swap controller
allows a board to be safely inserted and removed from a
live backplane. The device operates with any combination
of 2.7V to 16.5V and –2.7V to –16.5V supplies. Using two
external N-channel pass transistors, the board supply
voltages can be ramped up at an adjustable rate. A select-
able tracking mode allows dual supply tracking control for
ramping the positive and negative supplies together.
The LT4220 features foldback current limit and latches off
both gates if either supply remains in current limit longer
than an adjustable time period. The IC can be configured
for automatic restart after a delay set by the same timer.
A power good signal indicates when the output voltages
monitored by the two FB comparators are within tolerance,
and the gate drive signals are at their full on voltage.
The LT4220 is available in a 16-lead narrow SSOP
package.
Hot Swap is a trademark of Linear Technology Corporation.
V
CC
ON
+
C6
1µF
C5
1µF
R2
4.99k
R1
36.5k
R4
4.99k
R3
36.5k
–12V
V
EE
12V
V
CC
FAULT
TIMER
GND
TRACK
ON
–
PWRGD
FB
+
R10
4.99k
R9
36.5k
12V
V
OUT
+
R12
4.99k
R11
36.5k
4220 TA01
–12V
V
OUT
–
R7
10Ω
FB
–
SENSE
+
R
S
+
0.005Ω
R
S
–
0.005Ω
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
CL2
CL1
Z2*
R14
10Ω
CONNECTOR 1
CONNECTOR 2
C4
100nF
Z1*
R13
10Ω
V
IN
+
V
IN
–
* 1SMA13AT3 TRANSIENT
VOLTAGE SUPPRESSOR
+
+
716
15 14
12
34
12
11
6
8
9
10
13
5
R15
20k
R16, 20k
C7
10nF
C8
10nF
D1
IN4001
D2
IN4001
±12V 10A Hot Swap Controller
12V
V
IN
+
12V
V
OUT
+
–12V
V
IN
–
–12V
V
OUT
–
TIME (10ms/DIV)
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