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LT4220IGN Datasheet

  • LT4220IGN

  • Dual Supply Hot Swap Controller

  • 16頁

  • LINER

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LT4220
Dual Supply
Hot Swap Controller
FEATURES
s
s
s
s
s
DESCRIPTIO
s
s
s
s
Hot Swap
TM
Controller for Positive
and Negative Supplies
Supply Tracking Mode
鹵2.7V
to
鹵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
The LT
廬
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 鈥?.7V to 鈥?6.5V 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Live Board Insertion
RAID Systems
鈥?.2V ECL Supplies
Industrial Controls
Split Supply Systems
TYPICAL APPLICATIO
12V
V
CC
V
IN
+
鹵12V
10A Hot Swap Controller
R
S
+
0.005鈩?/div>
R13
10鈩?/div>
C4
100nF
7
16
V
CC
15
SENSE
+
Q1
SUB85N03-04
12V
V
OUT
+
C1
10nF
Z1*
R5
10鈩?/div>
R6
1k
+
CL1
CONNECTOR 2
CONNECTOR 1
R1
36.5k
R2
4.99k
R15
20k
TRACK
12
ON
+
11 FAULT
8
TIMER
C7
10nF
C6
1碌F
14
GATE
+
10
PWRGD
13
R16, 20k
FB
+
R10
4.99k
R12
4.99k
R9
36.5k
D1
IN4001
LT4220
9
GND
5
FB
鈥?/div>
6
ON
鈥?/div>
V
EE
1
C5
1碌F
SENSEK SENSE
2
3
鈥?/div>
R4
4.99k
R3
36.5k
C8
10nF
GATE
鈥?/div>
R11
36.5k
C2
4 R8 10nF
1k
R7
10鈩?/div>
D2
IN4001
C3
100nF
R
S
鈥?/div>
0.005鈩?/div>
+
CL2
鈥?2V
V
OUT
鈥?/div>
4220 TA01
Z2*
鈥?2V
V
EE
V
IN
鈥?/div>
R14
10鈩?/div>
* 1SMA13AT3 TRANSIENT
VOLTAGE SUPPRESSOR
Q2
SUB85N03-04
U
12V
V
IN
+
12V
V
OUT
+
鈥?2V
V
IN
鈥?/div>
鈥?2V
V
OUT
鈥?/div>
TIME (10ms/DIV)
4220f
U
U
1

LT4220IGN 產(chǎn)品屬性

  • LT4220

  • 100

  • 集成電路 (IC)

  • PMIC - 熱交換

  • -

  • 熱交換控制器

  • 通用

  • 無

  • -

  • 2.7 V ~ 16.5 V

  • -40°C ~ 85°C

  • 表面貼裝

  • 16-SSOP（0.154"，3.90mm 寬）

  • 16-SSOP

  • 管件

LT4220IGN相關(guān)型號PDF文件下載

  • 型號
    版本
    描述
    廠商
    下載
  • 英文版
    TRANSISTOR | BJT | NPN | TO-129
    ETC
  • 英文版
    Dual Supply Hot Swap Controller
    LINER
  • 英文版
    Dual Supply Hot Swap Controller
    LINER [Lin...
  • 英文版
    TRANSISTOR | BJT | NPN | TO-129
    ETC
  • 英文版
    Negative 48V Hot Swap Controller
    Linear
  • 英文版
    Positive High Voltage Hot Swap Controller with Open-Circuit ...
    LINER
  • 英文版
    Positive High Voltage Hot Swap Controller with Open-Circuit ...
    LINER [Lin...
  • 英文版
    Negative 48V Hot Swap Controller
    LINER
  • 英文版
    Negative 48V Hot Swap Controller
    LINER [Lin...
  • 英文版
    Negative 48V Hot Swap Controller
    LINER
  • 英文版
    Negative 48V Hot Swap Controller
    LINER [Lin...
  • 英文版
    Positive High Voltage Hot Swap Controllers
    LINER
  • 英文版
    Positive High Voltage Hot Swap Controllers
    Linear
  • 英文版
    Positive High Voltage Hot Swap Controllers
    LINER
  • 英文版
    Positive High Voltage Hot Swap Controllers
    Linear
  • 英文版
    Positive High Voltage Hot Swap Controller with Open-Circuit ...
    LINER
  • 英文版
    Positive High Voltage Hot Swap Controller with Open-Circuit ...
    LINER [Lin...
  • 英文版
    Dual Supply Hot Swap Controller
    LINER
  • 英文版
    Dual Supply Hot Swap Controller
    LINER [Lin...
  • 英文版
    Dual Supply Hot Swap Controller
    LINER

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