鈳?/div>
T Output
10-Lead MSOP and 12-Lead (4mm
脳
3mm) DFN
Packages
The LTC
廬
4216 is a positive low-voltage Hot Swap
TM
controller that allows a board to be safely inserted and
removed from a live backplane. It controls load voltages
ranging from 0V to 6V and isolates a severe fault with
instantaneous analog current limiting.
An internal high side switch driver controls the gate of
an external N-channel MOSFET. An adjustable soft-start
limits the rate of change of the inrush current at start-up
for a large load capacitor. Together with an analog current
limit ampli鏗乪r, an electronic circuit breaker with adjustable
response time provides dual level overcurrent protection.
No external gate capacitor is required for the analog cur-
The FB pin monitors the output supply voltage and signals
the
鈳?/div>
R
鈳?/div>
E
鈳?/div>
S
鈳?/div>
E
鈳?/div>
T output pin. An ON pin provides on/off control
and a
鈳?/div>
F
鈳?/div>
A
鈳?/div>
U
鈳?/div>
L
鈳?/div>
T pin indicates the fault status. The LTC4216
is available in the 10-lead MSOP and 12-lead (4mm
脳
3mm) DFN packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIO S
鈻?/div>
鈻?/div>
鈻?/div>
鈻?/div>
Electronic Circuit Breaker
Live Board Insertion and Removal
Industrial High Side Switch/Circuit Breaker
Optical Networking
TYPICAL APPLICATIO
BACKPLANE PCB EDGE
CONNECTOR CONNECTOR
(FEMALE)
(MALE)
V
IN
1.8V
LONG
Single Channel 1.8V Hot Swap Controller
0.004鈩?/div>
Si4864DY
+
LONG
22鈩?/div>
V
CC
330nF
LTC4216
SHORT
15k
1%
LONG
ON
20k TIMER
1%
10nF
SS
FILTER
18nF
FAULT
GND RESET
SENSEP SENSEN GATE
17.4k
1%
3.3V
FB
10k
1%
10k
10k
碌P
LOGIC
FAULT
RESET
1000碌F
V
OUT
1.8V
5A
V
CC
3.3V
GND
10nF
4216 TA01
U
Normal Power-Up
with Soft-Start
V
GATE
5V/DIV
I
OUT
2.5A/DIV
V
OUT
1V/DIV
0.5ms/DIV
4216 TA01b
U
U
4216f
1
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