LTC4413-1/LTC4413-2
Dual 2.6A, 2.5V to 5.5V
Fast Ideal Diodes
in 3mm × 3mm DFN
Description
Features
2-Channel Ideal Diode OR’ing or Load Sharing
n Low Loss Replacement for PowerPath™ OR’ing
Diodes
n Fast Response Replacement for LTC4413
n Low Forward On-Resistance (140mΩ Max at 3.6V)
n Low Reverse Leakage Current
n Low Regulated Forward Voltage (18mV Typ)
n Overvoltage Protection Sensor with Drive Output for
an External P-Channel MOSFET (LTC4413-2 Only)
n 2.5V to 5.5V Operating Range
n 2.6A Maximum Forward Current
n Internal Current Limit Protection
n Internal Thermal Protection
n Status Output to Indicate if Selected Channel is
Conducting
n Programmable Channel On/Off
n Low Profile (0.75mm) 10-Lead 3mm × 3mm DFN
Package
n
Applications
Battery and Wall Adapter Diode OR’ing in Handheld
Products
n Backup Battery Diode OR’ing
n Power Switching
n USB Peripherals
n Uninterruptable Supplies
n
The LTC®4413-1 and LTC4413-2 each contain two monolithic ideal diodes, each capable of supplying up to 2.6A
from input voltages between 2.5V and 5.5V. The ideal
diodes use a 100mΩ P-channel MOSFET to independently
connect INA to OUTA and INB to OUTB. During normal
forward operation, the voltage drops across each of
these diodes are regulated to as low as 18mV. Quiescent
current is less than 80µA for diode currents up to 1A. If
either of the output voltages exceeds its respective input
voltage, that MOSFET is turned off and less than 1µA of
reverse current flows from OUT to IN. Maximum forward
current in each MOSFET is limited to a constant 2.6A and
internal thermal limiting circuits protect the part during
fault conditions. An internal overvoltage protection sensor
detects when a voltage exceeds the LTC4413-2 absolute
maximum voltage tolerance.
Two active-high control pins independently turn off the two
ideal diodes contained within the LTC4413-1/LTC4413‑2.
When the selected channel is reverse biased, or the
LTC4413-1/LTC4413-2 is put into low power standby, the
status signal is pulled low by an 11µA open drain.
The LTC4413-1/LTC4413-2 are housed in a 10-lead 3mm
× 3mm DFN package.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT and PowerPath are trademarks of Analog Devices, Inc. All other trademarks are the
property of their respective owners.
Typical Application
Power Loss vs Load
Automatic Switchover from a Battery to a Wall Adapter
OUTA
INA
10µF
0.1µF
1Ω
BAT
+
VCC
600
470k
IDEAL
ENBA
STAT
LTC4413-2
OVI
GND
STAT
OVP
OVP
OUTB
ENBB
INB
TO LOAD
4.7µF
IDEAL
441312 TA01a
STAT IS HIGH WHEN WALL ADAPTER IS
SUPPLYING LOAD CURRENT
OVP IS HIGH WHEN WALL ADAPTER VOLTAGE > 6V
POWER LOSS (mW)
FDR8508
WALL
ADAPTER
INPUT
700
500
LTC4413-1
400
300
1N5817
200
100
0
0
500
1000 1500 2000
LOAD (mA)
2500
3000
441312 TA01b
441312fg
For more information www.linear.com/LTC4413-1
1
