Linear Technology LTC4219-12 12V, 5A Integrated Hot Swap Controller DC1594A-A DC1594A-A Datenbogen
Produktcode
DC1594A-A
LTC4219
1
4219fb
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
5A Integrated
Hot Swap Controller
The LTC
®
4219 is an integrated solution for Hot Swap™
applications that allows a board to be safely inserted and
removed from a live backplane. The part integrates a Hot
Swap controller, power MOSFET and current sense resistor
in a single package for small form factor applications.
removed from a live backplane. The part integrates a Hot
Swap controller, power MOSFET and current sense resistor
in a single package for small form factor applications.
The LTC4219 provides separate inrush current control
and a 10% accurate 5.6A current limit with foldback cur-
rent limiting. The current limit threshold can be adjusted
dynamically using an external pin. Additional features
include a current monitor output that amplifi es the sense
resistor voltage for ground referenced current sensing
and a MOSFET temperature monitor output. Thermal limit
and power good monitoring are also provided. The power
good detection level and foldback current limit profi le are
internally preset for 5V (LTC4219-5) and 12V (LTC4219-12)
applications.
and a 10% accurate 5.6A current limit with foldback cur-
rent limiting. The current limit threshold can be adjusted
dynamically using an external pin. Additional features
include a current monitor output that amplifi es the sense
resistor voltage for ground referenced current sensing
and a MOSFET temperature monitor output. Thermal limit
and power good monitoring are also provided. The power
good detection level and foldback current limit profi le are
internally preset for 5V (LTC4219-5) and 12V (LTC4219-12)
applications.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot Swap
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
12V, 5A Card Resident Application
n
Small Footprint
n
33m
W MOSFET with R
SENSE
n
Available in Preset 12V and 5V Versions
n
Adjustable, 10% Accurate Current Limit
n
Current and Temperature Monitor Outputs
n
Overtemperature Protection
n
Adjustable Current Limit Timer Before Fault
n
Power Good and Fault Outputs
n
Adjustable Inrush Current Control
n
Available in 16-Lead 5mm
¥ 3mm DFN Packages
n
RAID Systems
n
Server I/O Cards
n
Industrial
Power-Up Waveforms
12V
V
OUT
12V
5A
5A
4219 TA01a
330μF
10k
V
DD
TIMER
INTV
CC
OUT
PG
GND
FLT
I
SET
I
MON
LTC4219DHC-12
EN2
EN1
+
20k
0.1μF
10k
ADC
12V
12V
V
IN
10V/DIV
I
IN
0.1A/DIV
V
OUT
10V/DIV
PG
10V/DIV
20ms/DIV
4219 TA01b