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Linear Technology Electronic Components Datasheet

LTC4411ES5 Datasheet

2.6A Low Loss Ideal Diode

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FEATURES
Low Loss Replacement for PowerPathTM
OR’ing Diodes
Small Regulated Forward Voltage (28mV)
2.6A Maximum Forward Current
Low Forward ON Resistance (140mMax)
Low Reverse Leakage Current (<1µA)
2.6V to 5.5V Operating Range
Internal Current Limit Protection
Internal Thermal Protection
No External Active Components
Pin-Compatible Monolithic Replacement
for the LTC4412
Low Quiescent Current (40µA)
Low-Profile (1mm) 5-lead SOT-23 Package
U
APPLICATIO S
Cellular Phones
Handheld Computers
Digital Cameras
USB Peripherals
Uninterrupted Supplies
Logic Controlled Power Switch
LTC4411
2.6A Low Loss
Ideal Diode in ThinSOTTM
DESCRIPTIO
The LTC®4411 is an ideal diode IC, capable of supplying up
to 2.6A from an input voltage between 2.6V and 5.5V. The
LTC4411 is housed in a 5-lead 1mm profile SOT-23
package.
The LTC4411 contains a 140mP-channel MOSFET con-
necting IN to OUT. During normal forward operation, the
drop across the MOSFET is regulated to as low as 28mV.
Quiescent current is less than 40µA for load currents up to
100mA. If the output voltage exceeds the input voltage, the
MOSFET is turned off and less than 1µA of reverse current
flows from OUT to IN. Maximum forward current is limited
to a constant 2.6A (typical) and internal thermal limiting cir-
cuits protect the part during fault conditions.
An open-drain STAT pin indicates conduction status. The
STAT pin can be used to drive an auxiliary P-channel
MOSFET power switch connecting an alternate power
source when the LTC4411 is not conducting forward
current.
An active-high control pin turns off the LTC4411 and
reduces current consumption to less than 25µA. When
shut off, the LTC4411 indicates this condition with a low
voltage on the status signal.
, LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT and
PowerPath are trademarks of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
TYPICAL APPLICATIO
WALL
ADAPTER
INPUT
BATTERY
CELL(S)
IN
OUT
LTC4411
GND
CTL STAT
TO
LOAD
VCC
4.7µF
470k
STATUS OUTPUT
IS LOW WHEN WALL
ADAPTER IS SUPPLYING
LOAD CURRENT
4411 F01
Figure 1. Automatic Switchover of Load
Between a Battery and a Wall Adapter
LTC4411 vs Schottky Diode
Forward Voltage Characteristics
IOC
IMAX
LTC4411
IFWD
SLOPE
1/RON
CONSTANT ION
CONSTANT
RON
VFWD
SLOPE
1/RFWD
CONSTANT
VON
SCHOTTKY
DIODE
FORWARD VOLTAGE (V)
LTC4411 FO1b
4411fa
1


Linear Technology Electronic Components Datasheet

LTC4411ES5 Datasheet

2.6A Low Loss Ideal Diode

No Preview Available !

LTC4411
ABSOLUTE AXI U RATI GS
(Note 1)
IN, OUT, STAT, CTL Voltage .......................... –0.3 to 6V
Operating Ambient Temperature Range
(Note 2) ...............................................–40°C to 85°C
Operating Junction Temperature
(Note 3) .............................................–40°C to 125°C
Storage Temperature Range ..................–65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
Continuous Power Dissipation
(Derate 10mW/°C above 70°C)...................... 500mW
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
IN 1
GND 2
CTL 3
5 OUT
4 STAT
S5 PACKAGE
5-LEAD PLASTIC SOT-23
TJMAX = 125°C, θJA = 250°C/W (Note 3)
ORDER PART
NUMBER
LTC4411ES5
S5 PART
MARKING
LTAEN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 6)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN, VOUT
IQF
Operating Supply Range
Quiescent Current in Forward Regulation
(Note 4)
VIN = 3.6V, ILOAD = 100mA
2.6
5.5
V
40
µA
IQ(Off)
Quiescent Current in Shutdown
VIN = 3.6V, VSTAT = 0V, VCTL > VIH
22
25
µA
IQRIN
Quiescent Current While in Reverse
VIN = 3.6V
Turn-Off. Current Drawn from VIN
VOUT = 3.7V
1.3
1.8
2.3
µA
IQROUT
Quiescent Current While in Reverse
Turn-Off. Current Drawn from VOUT
VIN = 3.6V
VOUT = 3.7V
14
17
23
µA
ILEAK
VIN Current When VOUT Supplies Power
VIN = 0V, VOUT = 5.5V
–1
1
µA
VFWD
Forward Turn-On Voltage (VIN – VOUT)
VIN = 3.6V
8
17
28
mV
– VRTO
Reverse Turn-Off Voltage (VOUT – VIN)
VIN = 3.6V
–4
5
14
mV
RFWD
Forward ON Resistance, (VIN-VOUT)/(ILOAD) VIN = 3.6V, 100mA < ILOAD < 500mA
100 140
m
RON
ON Resistance in Constant RON Mode
VIN = 3.6V, ILOAD = 1000mA
140 245
m
UVLO
Undervoltage Lockout
VIN Rising, 0°C < TA < 85°C
VIN Rising
VIN Falling
1.6
2.5
V
2.6
V
V
STAT Output
IS(SNK)
IS(OFF)
tS(ON)
tS(OFF)
CTL Input
STAT Pin Sink Current
STAT Pin Off Current
STAT Pin Turn-On Time
STAT Pin Turn-Off Time
VIN = 3.6V, VOUT > VIN + VRTO,
VCTL > VTH + VHYST
VIN = 3.6V, VOUT < VIN – VFWD,
VCTL < VTH – VHYST
7
11
18
µA
–1
1
µA
1.2
1.4
µs
1.1 1.25
µs
VTH
CTL Input Threshold Voltage
VHYST
CTL Input Hysteresis
ICTL
CTL Input Pull-Down Current
Short-Circuit Response
VTH = (VIL + VIH)/2
VHYST = (VIH – VIL)
VOUT < VIN = 3.6V, VCTL = 1.5V
390
460
530
mV
90
mV
2
3.5
6
µA
IOC
Current Limit
IQOC
Quiescent Current While in
Overcurrent Operation
VIN = 3.6V (Note 5)
VIN = 3.6V, IOUT = 1.8A
1.8
2.6
A
575 1100
µA
4411fa
2


Part Number LTC4411ES5
Description 2.6A Low Loss Ideal Diode
Maker Linear
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