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LTC4411ES5#TRPBF

P1-P3P4-P6P7-P8
LTC4411
1
4411fa
LTC4411
SCHOTTKY
DIODE
CONSTANT I
ON
CONSTANT
R
ON
CONSTANT
V
ON
V
FWD
FORWARD VOLTAGE (V)
LTC4411 FO1b
SLOPE
1/R
ON
SLOPE
1/R
FWD
I
OC
I
MAX
I
FWD
CURRENT (A)
IN
GND
CTL
OUT
STAT
LTC4411
WALL
ADAPTER
INPUT
TO
LOAD
4.7µF
STATUS OUTPUT
IS LOW WHEN WALL
ADAPTER IS SUPPLYING
LOAD CURRENT
BATTERY
CELL(S)
470k
4411 F01
V
CC
TYPICAL APPLICATIO
U
APPLICATIO S
U
DESCRIPTIO
U
FEATURES
, 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.
■
Low Loss Replacement for PowerPath
TM
OR’ing Diodes
■
Small Regulated Forward Voltage (28mV)
■
2.6A Maximum Forward Current
■
Low Forward ON Resistance (140mΩ Max)
■
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
2.6A Low Loss
Ideal Diode in ThinSOT
TM
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 140mΩ P-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.
Figure 1. Automatic Switchover of Load
Between a Battery and a Wall Adapter
■
Cellular Phones
■
Handheld Computers
■
Digital Cameras
■
USB Peripherals
■
Uninterrupted Supplies
■
Logic Controlled Power Switch
LTC4411 vs Schottky Diode
Forward Voltage Characteristics
2
LTC4411
4411fa
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
ORDER PART
NUMBER
S5 PART
MARKING
T
JMAX
= 125°C, θ
JA
= 250°C/W (Note 3)
LTAEN
LTC4411ES5
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
(Note 1)
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
5 OUT
4 STAT
IN 1
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC SOT-23
GND 2
CTL 3
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 6)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
, V
OUT
Operating Supply Range ● 2.6 5.5 V
I
QF
Quiescent Current in Forward Regulation V
IN
= 3.6V, I
LOAD
= 100mA 40 µA
(Note 4)
I
Q(Off)
Quiescent Current in Shutdown V
IN
= 3.6V, V
STAT
= 0V, V
CTL
> V
IH
● 22 25 µA
I
QRIN
Quiescent Current While in Reverse V
IN
= 3.6V ● 1.3 1.8 2.3 µA
Turn-Off. Current Drawn from V
IN
V
OUT
= 3.7V
I
QROUT
Quiescent Current While in Reverse V
IN
= 3.6V ● 14 17 23 µA
Turn-Off. Current Drawn from V
OUT
V
OUT
= 3.7V
I
LEAK
V
IN
Current When V
OUT
Supplies Power V
IN
= 0V, V
OUT
= 5.5V –1 1 µA
V
FWD
Forward Turn-On Voltage (V
IN
– V
OUT
)V
IN
= 3.6V ● 81728 mV
–V
RTO
Reverse Turn-Off Voltage (V
OUT
– V
IN
)V
IN
= 3.6V –4 5 14 mV
R
FWD
Forward ON Resistance, ∆(V
IN
-V
OUT
)/∆(I
LOAD
)V
IN
= 3.6V, 100mA < I
LOAD
< 500mA ● 100 140 mΩ
R
ON
ON Resistance in Constant R
ON
Mode V
IN
= 3.6V, I
LOAD
= 1000mA ● 140 245 mΩ
UVLO Undervoltage Lockout V
IN
Rising, 0°C < T
A
< 85°C 2.5 V
V
IN
Rising ● 2.6 V
V
IN
Falling ● 1.6 V
STAT Output
I
S(SNK)
STAT Pin Sink Current V
IN
= 3.6V, V
OUT
> V
IN
+ V
RTO
, 7 11 18 µA
V
CTL
> V
TH
+ V
HYST
I
S(OFF)
STAT Pin Off Current V
IN
= 3.6V, V
OUT
< V
IN
– V
FWD
,–1 1µA
V
CTL
< V
TH
– V
HYST
t
S(ON)
STAT Pin Turn-On Time 1.2 1.4 µs
t
S(OFF)
STAT Pin Turn-Off Time 1.1 1.25 µs
CTL Input
V
TH
CTL Input Threshold Voltage V
TH
= (V
IL
+ V
IH
)/2 ● 390 460 530 mV
V
HYST
CTL Input Hysteresis V
HYST
= (V
IH
– V
IL
)90mV
I
CTL
CTL Input Pull-Down Current V
OUT
< V
IN
= 3.6V, V
CTL
= 1.5V ● 2 3.5 6 µA
Short-Circuit Response
I
OC
Current Limit V
IN
= 3.6V (Note 5) 1.8 2.6 A
I
QOC
Quiescent Current While in V
IN
= 3.6V, I
OUT
= 1.8A 575 1100 µA
Overcurrent Operation
LTC4411
3
4411fa
Measured Thermal Resistance (2-Layer Board*)
COPPER AREA BOARD THERMAL RESISTANCE
TOPSIDE BACKSIDE AREA JUNCTION-TO-AMBIENT
2500mm
2
2500mm
2
2500mm
2
125°C/W
1000mm
2
2500mm
2
2500mm
2
125°C/W
225mm
2
2500mm
2
2500mm
2
130°C/W
100mm
2
2500mm
2
2500mm
2
135°C/W
50mm
2
2500mm
2
2500mm
2
150°C/W
*Each layer uses one ounce copper
LOAD CURRENT (A)
0.5 1.5 2.51.0 2.0 3.0
4411 G01
QUIESCENT CURRENT (µA)
0
LOAD CURRENT (A) LOAD CURRENT (A)
0.5 1.5 2.51.0 2.0 3.0
0
T
A
= –40°C
T
A
= 0°C
T
A
= 40°C
T
A
= 80°C
T
A
= 120°C
FORWARD VOLTAGE (V)
4411 G02
0
RESISTANCE (Ω)
0.5
1.0 1.5 2.0
4411 G03
1000 0.5
0.4
0.3
0.2
0.1
0.15
0.10
0.30
0.25
0.20
0.05
0
100
10
0
T
A
= –40°C
T
A
= 0°C
T
A
= 40°C
T
A
= 80°C
T
A
= 120°C
T
A
= –40°C
T
A
= 0°C
T
A
= 40°C
T
A
= 80°C
T
A
= 120°C
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 6)
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Typical I
QF
vs I
LOAD
at V
IN
= 3.6V
V
FWD
vs I
LOAD
at V
IN
= 3.6V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC4411E is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C ambient
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formula:
T
J
= T
A
+ (P
D
• 150°C/W)
The following table lists thermal resistance for several different board sizes
and copper areas. All measurements were taken in still air on 3/32" FR-4
board with the device mounted on topside.
Note 4: Quiescent current increases with load current, refer to plot of I
QF
vs I
LOAD
.
Note 5: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
Note 6: Current into a pin is positive and current out of a pin is negative.
All voltages are referenced to GND.
R
FWD
and R
ON
vs I
LOAD
at
V
IN
= 3.6V
P1-P3P4-P6P7-P8

LTC4411ES5#TRPBF

Mfr. #:
Buy LTC4411ES5#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Power Management Specialized - PMIC 2.6A L Loss Ideal Diode in SOT
Lifecycle:
New from this manufacturer.
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