Datasheet

LTC6102
LTC6102-1/LTC6102HV
10
6102fe
For more information www.linear.com/LTC6102
–INS (Pin 1): Amplifier Inverting Input. When tied to –INF,
the internal sense amplifier will drive –INS to the same
potential as +IN.
–INF (Pin 2): Force Input. This pin carries the input
current from R
IN
and must be tied to –INS near R
IN
. A
resistor (R
IN
) tied from V
+
to –INF sets the output current
I
OUT
= V
SENSE
/R
IN
. V
SENSE
is the voltage across the ex-
ternal R
SENSE
.
V
–
(Pin 3, LTC6102/LTC6102HV Only): Negative Supply.
EN (Pin 3, LTC6102-1 Only): Enable Pin, Referenced to
the Negative Supply. When the enable pin is pulled high,
the LTC6102-1 is active. When the enable pin is pulled low
or left floating, the LTC6102-1 is disabled.
OUT (Pin 4): Open-Drain Current output. OUT will source
a current that is proportional to the sense voltage into
an external resistor. I
OUT
is the same current that enters
–INF.
V
–
(Pin 5): Negative Supply.
V
REG
(Pin 6): Internal Regulated Supply. A 0.1µF (or
larger) capacitor should be tied from V
REG
to V
+
. V
REG
is
not designed to drive external circuits.
V
+
(Pin 7): Positive Supply. Supply current is drawn
through this pin.
+IN (Pin 8): Amplifier Noninverting Input. Must be tied
to the system load end of the sense resistor. The +IN pin
has an internal 5k series resistor designed to allow large
input voltage transients or accidental disconnection of the
sense resistor. This pin can be held up to 20V below the
–INS pin indefinitely, or up to 60V below the –INS pin for
up to one second (see Absolute Maximum Ratings).
Exposed Pad (Pin 9, DFN Only): V
–
. The Exposed Pad
must be soldered to PCB.
pin FuncTions