LTC4411ES5 Linear Technology, LTC4411ES5 Datasheet

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LTC4411ES5

Manufacturer Part Number
LTC4411ES5
Description
2.6A Low Loss Ideal Diode in ThinSOT
Manufacturer
Linear Technology
Datasheet

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0
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
Low Loss Replacement for PowerPath
OR’ing Diodes
Small Regulated Forward Voltage (28mV Min)
2.6A Maximum Forward Current
Low Forward ON Resistance (140m Max)
Low Reverse Leakage Current (<1 A)
2.6V to 5.5V Operating Range
Internal Current Limit Protection
Internal Thermal Protection
No External Active Components
Pin-Compatible Low-Power Replacement
for LTC4412
Low Quiescent Current (40 A typical)
Low-profile (1mm) 5-lead SOT-23 Package
Cellular Phones
Handheld Computers
Digital Cameras
USB Peripherals
Uninterrupted Supplies
Logic Controlled Power Switch
BATTERY
ADAPTER
CELL(S)
INPUT
WALL
Figure 1. Automatic Switchover of Load
Between a Battery and a Wall Adapter
IN
GND
CTL
U
LTC4411
STAT
OUT
U
4.7 F
V
TM
CC
470k
TO
LOAD
STATUS OUTPUT
IS LOW WHEN WALL
ADAPTER IS SUPPLYING
LOAD CURRENT
4411 F01
DESCRIPTIO
The LTC
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 140m 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 40 A for load currents up to
100mA. If the output voltage exceeds the input voltage, the
MOSFET is turned off and less than 1 A 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 25 A. When
shut off, the LTC4411 indicates this condition with a low
voltage on the status signal.
ThinSOT and PowerPath are trademarks of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Ideal Diode in ThinSOT
®
4411 is an ideal diode IC, capable of supplying up
I
I
MAX
FWD
I
OC
V
FWD
LTC4411
U
Forward Voltage Characteristics
SLOPE
1/R
LTC4411 vs Schottky Diode
FWD
FORWARD VOLTAGE (V)
2.6A Low Loss
SLOPE
1/R
ON
SCHOTTKY
DIODE
LTC4411
CONSTANT I
CONSTANT
CONSTANT
V
R
ON
ON
LTC4411 FO2
ON
1
4411f
TM

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LTC4411ES5 Summary of contents

Page 1

... An active-high control pin turns off the LTC4411 and reduces current consumption to less than 25 A. 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. TO LOAD ...

Page 2

... V )/ – HYST < 3.6V 1.5V OUT IN CTL V = 3.6V (Note 3.6V 1.8A IN OUT U W ORDER PART NUMBER LTC4411ES5 5 OUT 4 STAT S5 PART MARKING = 250 C/W (Note 3) JA LTAEN MIN TYP MAX 2.6 5.5 40 1.3 1.8 2 – 100 140 140 245 2 ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T 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 ...

Page 4

LTC4411 W U TYPICAL PERFOR A CE CHARACTERISTICS FWD SUPPLY 0.150 T = – 120 0.125 ...

Page 5

W BLOCK DIAGRA GND V REF CTL OPERATIO The LTC4411 operation is described with the aid of Figure 3. Forward regulation for the LTC4411 has three operation modes depending on the ...

Page 6

LTC4411 U OPERATIO When the load current exceeds I condition is detected and the LTC4411 will limit the output current. This will cause the output voltage to drop as the load current exceeds the amount of current that the LTC4411 ...

Page 7

... When a wall adapter input is applied, both LTC4411’s Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 8

... TO INPUT IN OUT LOAD C OUT C LTC4411 GND 3 4 LOGIC CTL STAT INPUT C : C0805C105K8PAC C1206C475K8PAC 4411 F09 OUT 2.90 BSC (NOTE 4) 0.30 – 0.45 TYP 5 PLCS (NOTE 3) 0.01 – 0.10 1.90 BSC S5 TSOT-23 0302 28V IN LT/TP 1103 1K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2003 4411f ...

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