LT6110_15 Datasheet, PDF (1/38 Pages) Linear Technology – Cable/Wire Drop Compensator

LT6110
Cable/Wire Drop
Compensator
Features
n _{Improve Voltage Regulation to a Remote Load by 10×}
n _{Ideal for Resistor-Adjustable Voltage Regulators}
n _{Gain Configurable with a Single Resistor}
n _{High Side Current Sensing:}
Integrated 20mΩ Sense Resistor for Up to 3A
Ability to Use an External Sense Resistor
n _{300µV Maximum Input Offset Voltage}
n _{Output Current Accuracy of 1% Maximum}
n _{30µA Maximum Supply Current}
n _{2V to 50V Supply Range}
n _{Fully Specified from –40°C to 125°C}
n _{Available in Low Profile (1mm) ThinSOT™ and}
(2mm × 2mm) DFN Packages
Applications
n _{Automotive and Industrial Power Distribution}
n _{USB Power}
n _{DC/DC Converters}
n _{Plug-In DC Adapters}
n _{Power over Ethernet}
Description
The LT^®6110 is a precision high side current sense with a
current mode output, designed for controlling the output
voltage of an adjustable power supply or voltage regulator.
This can be used to compensate for drops in voltage at
a remote load due to resistance in a wire, trace or cable.
The LT6110 monitors load current via a series-connected
internal or external sense resistor. Two current mode out-
puts, one sinking and one sourcing, are provided that are
proportional to the load current. This allows the LT6110 to
adjust the output voltage of a wide variety of regulators.
Either output may be used to monitor the load current.
Low DC offset allows for the use of a small sense resis-
tor, as well as precise control of small variations in wire
voltage drop.
L, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Typical Application
V_IN IN
OUT ^VREG
REGULATOR
FB
GND
I_LOAD
R_IN
+IN V⁺
RS –IN
IOUT
LT6110
IMON V^–
R_WIRE
5V
V_LOAD UNCOMPENSATED
5V
V_LOAD COMPENSATED
2A
1A
I_LOAD
200µs/DIV
V_LOAD
REMOTE
LOAD
6110 TA01
For more information www.linear.com/LT6110
6110fa
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