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LTC4210-1IS6 Datasheet

  • LTC4210-1IS6

  • Hot Swap Controller in 6-Lead SOT-23 Package

  • 246.85KB

  • 20頁

  • LINER

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LTC4210-1/LTC4210-2
Hot Swap Controller in
6-Lead SOT-23 Package
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
s
s
Allows Safe Board Insertion and Removal
from a Live Backplane
Adjustable Analog Current Limit
with Circuit Breaker
Fast Response Limits Peak Fault Current
Automatic Retry or Latch Off On Current Fault
Adjustable Supply Voltage Power-Up Rate
High Side Drive for External MOSFET Switch
Controls Supply Voltages from 2.7V to 16.5V
Undervoltage Lockout
Adjustable Overvoltage Protection
Low Profile (1mm) SOT-23 (ThinSOT
TM
) Package
The LTC
廬
4210 is a 6-pin SOT-23 Hot Swap
TM
controller
that allows a board to be safely inserted and removed from
a live backplane. An internal high side switch driver
controls the GATE of an external N-channel MOSFET for a
supply voltage ranging from 2.7V to 16.5V. The LTC4210
provides the initial timing cycle and allows the GATE to be
ramped up at an adjustable rate.
The LTC4210 features a fast current limit loop providing
active current limiting together with a circuit breaker
timer. The signal at the ON pin turns the part on and off and
is also used for the reset function.
This part is available in two options: the LTC4210-1 for
automatic retry on overcurrent fault and the LTC4210-2
for latch off on an overcurrent fault.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT and Hot Swap are trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
Hot Board Insertion
Electronic Circuit Breaker
Industrial High Side Switch/Circuit Breaker
TYPICAL APPLICATIO
BACKPLANE PCB EDGE
CONNECTOR CONNECTOR
(FEMALE)
(MALE)
V
IN
5V
LONG
Single Channel 5V Hot Swap Controller
R
SENSE
0.01鈩?/div>
Z1
OPTIONAL
R
X
10鈩?/div>
C
X
0.1碌F
V
CC
SENSE
GATE
Q1
Si4410DY
+
R
G
100鈩?/div>
R
C
100鈩?/div>
C
C
0.01碌F
V
OUT
5V
470碌F 4A
C
LOAD
SHORT
R
ON1
20k
ON
R
ON2
10k
LTC4210
TIMER
GND
C
TIMER
0.22碌F
GND
LONG
Z1: ISMA10A OR SMAJ10A
GND
4210 TA01
U
Power-Up Sequence
C
LOAD
= 470碌F
V
ON
(2V/DIV)
V
TIMER
(1V/DIV)
V
OUT
(5V/DIV)
I
OUT
(0.5A/DIV)
10ms/DIV
4210 TA02
U
U
421012f
1

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