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LTC4412HVIS6 Datasheet

Low Loss PowerPath Controller

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FEATURES
Very Low Loss Replacement for Power Supply
OR’ing Diodes
3V to 36V AC/DC Adapter Voltage Range
–40°C to 125°C Operating Temperature Range
Minimal External Components
Automatic Switching Between DC Sources
Simplifies Load Sharing with Multiple Batteries
Low Quiescent Current: 11µA
2.5V to 36V Battery Voltage Range
Reverse Battery Protection
Drives Almost Any Size MOSFET for Wide Range of
Current Requirements
MOSFET Gate Protection Clamp
Manual Control Input
Low Profile (1mm) SOT-23 (ThinSOTTM) Package
AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
Industrial and Automotive Applications
Notebook and Handheld Computers
USB-Powered Peripherals
Uninterruptable Power Supplies
Logic Controlled Power Switch
All registered trademarks and trademarks are the property of their respective owners.
LTC4412HV
36V, Low Loss PowerPathTM
Controller in ThinSOT
DESCRIPTION
The LTC®4412HV controls an external P-channel MOSFET
to create a near ideal diode function for power switchover
or load sharing. This permits highly efficient OR’ing of
multiple power sources for extended battery life and low
self- heating. When conducting, the voltage drop across
the MOSFET is typically 20mV. For applications with a
wall adapter or other auxiliary power source, the load
is automatically disconnected from the battery when the
auxiliary source is connected. Two or more LTC4412HVs
may be interconnected to allow load sharing between
multiple batteries or charging of multiple batteries from
a single charger. The LTC4412HV is an extended supply
and temperature range version of the LTC4412.
The wide supply operating range supports operation from
one to eight Li-Ion cells in series. The low quiescent cur-
rent (11µA typical) is independent of the load current. The
gate driver includes an internal voltage clamp for MOSFET
protection.
The STAT pin can be used to enable an auxiliary P-channel
MOSFET power switch when an auxiliary supply is
detected. This pin may also be used to indicate to a micro-
controller that an auxiliary supply is connected. The con-
trol (CTL) input enables the user to force the primary
MOSFET off and the STAT pin low.
The LTC4412HV is available in a low profile (1mm)
SOT‑23 package.
TYPICAL APPLICATION
LTC4412HV vs Schottky Diode Forward Voltage Drop
1
WALL
ADAPTER
INPUT
BATTERY
CELL(S)
1N5819
FDN306P
1 LTC4412HV 6
VIN SENSE
2
5
GND GATE
3
4
CTL STAT
COUT
VCC
TO LOAD
470k STATUS OUTPUT
LOW WHEN WALL
4412HV F01 ADAPTER PRESENT
CONSTANT
RON
LTC4412HV
CONSTANT
VOLTAGE
SCHOTTKY
DIODE
Figure 1. Automatic Switchover of Load Between a Battery and a Wall Adapter
0
0.02
0.5
FORWARD VOLTAGE (V) 4412HV F01b
Rev. B
Document Feedback
For more information www.analog.com
1


Analog Devices Semiconductor Electronic Components Datasheet

LTC4412HVIS6 Datasheet

Low Loss PowerPath Controller

No Preview Available !

LTC4412HV
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage (VIN)................................... –14V to 40V
Voltage from VIN to SENSE......................... – 40V to 40V
Input Voltage
CTL......................................................... –0.3V to 40V
SENSE..................................................... –14V to 40V
Output Voltage
GATE ...................... –0.3V to the Higher of VIN + 0.3V
or SENSE + 0.3V
STAT.......................................................– 0.3V to 40V
Operating Ambient Temperature Range
(Note 2) ............................................ – 40°C to 125°C
Operating Junction Temperature............ –40°C to 125°C
Storage Temperature Range.................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
PIN CONFIGURATION
VIN 1
GND 2
CTL 3
TOP VIEW
6 SENSE
5 GATE
4 STAT
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
TJMAX = 125°C, θJA = 230°C/W
ORDER INFORMATION
TAPE AND REEL (MINI) TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4412HVIS6#TRMPBF LTC4412HVIS6#TRPBF LTBHR
6-Lead Plastic TSOT-23
–40°C to 125°C
AUTOMOTIVE PRODUCTS**
LTC4412HVIS6#WTRMPBF LTC4412HVIS6#WTRPBF LTBHR
6-Lead Plastic TSOT-23
–40°C to 125°C
Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
**Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These
models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local
Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models.
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
junction temperature range, unless otherwise noted specifications are at TA = 25°C, VIN = 12V, CTL and GND = 0V. Current into a pin is
positive and current out of a pin is negative. All voltages are referenced to GND, unless otherwise specified.
SYMBOL
VIN,
VSENSE
IQFL
IQFH
IQRL
IQRH
PARAMETER
Operating Supply Range
Quiescent Supply Current at Low Supply
While in Forward Regulation
Quiescent Supply Current at High Supply
While in Forward Regulation
Quiescent Supply Current at Low Supply
While in Reverse Turn-Off
Quiescent Supply Current at High Supply
While in Reverse Turn-Off
CONDITIONS
VIN and/or VSENSE Must Be in This Range
for Proper Operation
VIN = 3.6V. Measure Combined Current
at VIN and SENSE Pins Averaged with
VSENSE = 3.5V and VSENSE = 3.6V (Note 3)
VIN = 36V. Measure Combined Current
at VIN and SENSE Pins Averaged with
VSENSE = 35.9V and VSENSE = 36V (Note 3)
VIN = 3.6V, VSENSE = 3.7V. Measure
Combined Current of VIN and SENSE Pins
VIN = 35.9V, VSENSE = 36V. Measure
Combined Current of VIN and SENSE Pins
2
For more information www.analog.com
MIN TYP MAX UNITS
l 2.5
36
V
l
11
19
µA
l
18
32
µA
10
19
19
33
µA
µA
Rev. B


Part Number LTC4412HVIS6
Description Low Loss PowerPath Controller
Maker Analog Devices
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