Linear Technology LTC4359DCB Demoboard: 28V, 20A Ideal Diode and Switch with Reverse Input Protection DC1676A DC1676A 数据表
产品代码
DC1676A
LTC4359
1
4359fa
For more information
www.linear.com/LTC4359
TYPICAL APPLICATION
FEATURES
DESCRIPTION
Ideal Diode Controller with
Reverse Input Protection
The
is a positive high voltage, ideal diode
controller that drives an external N-channel MOSFET to
replace a Schottky diode. It controls the forward-voltage
drop across the MOSFET to ensure smooth current delivery
without oscillation even at light loads. If a power source
fails or is shorted, a fast turn-off minimizes reverse cur-
rent transients. A shutdown mode is available to reduce
the quiescent current to 9μA for load switch and 14µA for
ideal diode applications.
When used in high current diode applications, the LTC4359
When used in high current diode applications, the LTC4359
reduces power consumption, heat dissipation, voltage loss
and PC board area. With its wide operating voltage range,
the ability to withstand reverse input voltage, and high
temperature rating, the LTC4359 satisfies the demanding
requirements of both automotive and telecom applications.
The LTC4359 also easily ORs power sources in systems
with redundant supplies.
12V, 20A Automotive Reverse-Battery Protection
Power Dissipation vs Load Current
APPLICATIONS
n
Reduces Power Dissipation by Replacing a Power
Schottky Diode
n
Wide Operating Voltage Range: 4V to 80V
n
Reverse Input Protection to – 40V
n
Low 9µA Shutdown Current
n
Low 150μA Operating Current
n
Smooth Switchover without Oscillation
n
Controls Single or Back-to-Back N-Channel MOSFETs
n
Available in 6-Lead (2mm
× 3mm) DFN and 8-Lead
MSOP Packages
n
Automotive Battery Protection
n
Redundant Power Supplies
n
Supply Holdup
n
Telecom Infrastructure
n
Computer Systems/Servers
n
Solar Systems
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.
4359 TA01
LTC4359
V
SS
SHDN
IN
SOURCE
OUT
47nF
1k
GATE
BSC028N06NS
SMAT70A
70V
SMAJ24A
SMAJ24A
24V
V
IN
12V
V
OUT
TO LOAD
CURRENT (A)
0
POWER DISSIP
ATION (W)
4
8
6
20
4359 TA01a
2
0
5
10
15
10
SCHOTTKY DIODE (SBG2040CT)
POWER
SAVED
MOSFET (BSC028N06NS)