1

LTC4413

4413f

Dual 2.6A, 2.5V to 5.5V,

Ideal Diodes in 3mm × 3mm DFN

■

2-Channel Ideal Diode ORing or Load Sharing

■

Low Reverse Leakage Current (1µA Max)

■

2.6A Maximum Forward Current

Impedance-Induced Voltage Spiking

Conducting

Package

DESCRIPTIO

FEATURES

The LTC

capable of supplying up to 2.6A from input voltages be-

tween 2.5V and 5.5V. Each ideal diode uses a 100mΩ

P-channel MOSFET that independently connects INA to

OUTA and INB to OUTB. During normal forward operation

the voltage drop across each of these diodes is regulated

to as low as 28mV. Quiescent current is less than 40µA for

diode currents up to 1A. If either of the output voltages

exceeds its respective input voltages, that MOSFET is turned

off and less than 1µA of reverse current will flow from OUT

to IN. Maximum forward current in each MOSFET is lim-

ited to a constant 2.6A and internal thermal limiting cir-

cuits protect the part during fault conditions.

Two active-high control pins independently turn off the

two ideal diodes contained within the LTC4413, control-

ling the operation mode as described by Table 3. When the

selected channel is reverse biased, or the LTC4413 is put

into low power standby, a status signal indicates this con-

dition with a low voltage.

A 9µA open-drain STAT pin is used to indicate conduction

status. When terminated to a positive supply through a 470k

resistor, the STAT pin can be used to indicate that the se-

lected diode is conducting with a HIGH voltage. This signal

can also be used to drive an auxiliary P-channel MOSFET

power switch to control a third alternate power source when

the LTC4413 is not conducting forward current.

The LTC4413 is housed in a 10-lead DFN package.

Products

APPLICATIO S

TYPICAL APPLICATIO

ENBA

GND

ENBB

470k

INA

BAT

10µF

4.7µF

4413 TA01

TO LOAD

STAT IS HIGH WHEN

BAT IS SUPPLYING

LOAD CURRENT

WALL

ADAPTER

(0V TO 5.5V)

OUTA

INB

OUTB

STAT

CONTROL CIRCUIT

LTC4413

0

1000

1500

400

4413 TA01b

500

0

100

200

300

2000

LTC4413

1N5817

LTC4413 vs 1N5817 Schottky

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.