1
LTC4210-1/LTC4210-2
421012f
APPLICATIO S
DESCRIPTIO
FEATURES
TYPICAL APPLICATIO
The LTC
?/DIV>
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.
s
Allows Safe Board Insertion and Removal
from a Live Backplane
s
Adjustable Analog Current Limit
with Circuit Breaker
s
Fast Response Limits Peak Fault Current
s
Automatic Retry or Latch Off On Current Fault
s
Adjustable Supply Voltage Power-Up Rate
s
High Side Drive for External MOSFET Switch
s
Controls Supply Voltages from 2.7V to 16.5V
s
Undervoltage Lockout
s
Adjustable Overvoltage Protection
s
Low Profile (1mm) SOT-23 (ThinSOT
TM
) Package
s
Hot Board Insertion
s
Electronic Circuit Breaker
s
Industrial High Side Switch/Circuit Breaker
Hot Swap Controller in
6-Lead SOT-23 Package
, LTC and LT are registered trademarks of Linear Technology Corporation.
Single Channel 5V Hot Swap Controller
ThinSOT and Hot Swap are trademarks of Linear Technology Corporation.
Power-Up Sequence
+
V
CC
SENSE
LTC4210
470礔
C
LOAD
V
OUT
5V
4A
GND
4210 TA01
R
C
100&
GATE
GND
TIMER
ON
SHORT
LONG
V
IN
5V
GND
LONG
Z1: ISMA10A OR SMAJ10A
R
ON2
10k
R
ON1
20k
R
X
10&
R
SENSE
0.01&
PCB EDGE
CONNECTOR
(MALE)
Q1
Si4410DY
Z1
OPTIONAL
R
G
100&
C
TIMER
0.22礔
C
X
0.1礔
C
C
0.01礔
BACKPLANE
CONNECTOR
(FEMALE)
4210 TA02
10ms/DIV
I
OUT
(0.5A/DIV)
V
OUT
(5V/DIV)
V
ON
(2V/DIV)
V
TIMER
(1V/DIV)
C
LOAD
= 470礔
发布紧急采购，3分钟左右您将得到回复。
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