LT6119-1/LT6119-2
9
611912f
For more information www.linear.com/LT6119-1
pin FuncTions
SENSELO (Pin 1): Sense Amplifier Input. This pin must
be tied to the load end of the sense resistor.
LE (Pin 2): Latch Control Pin. When high, the comparator
latch is enabled. With the comparator latch enabled, the
comparator output will latch at a low level once tripped.
When the LE input is low, the comparator latch is disabled
and the comparator functions transparently.
OUTC2 (Pin 3): Open-Drain Comparator 2 Output. Off-
state voltage may be as high as 60V above V
–
, regardless
of V
+
used.
OUTC1 (Pin 4): Open-Drain Comparator 1 Output. Off-
state voltage may be as high as 60V above V
–
, regardless
of V
+
used.
V
–
(Pin 5): Negative Supply Pin. This pin is normally con-
nected to ground.
INC1 (
Pin 6): Inverting Input of Comparator 1. The second
input of this comparator is internally connected to the
400mV reference.
INC2 (Pin 7): Input of Comparator 2. For the LT6119-1
this is the noninverting input of comparator 2. For the
LT6119-2 this is the inverting input of comparator2. The
second input of each of these comparators is internally
connected to the 400mV reference.
OUTA (Pin 8): Current Output of the Sense Amplifier. This
pin will source a current
that is equal to the sense voltage
divided by the external gain setting resistor, R
IN
.
V
+
(Pin 9): Positive Supply Pin. The V
+
pin can be con-
nected directly
to either side of the sense resistor, R
SENSE
.
When V
+
is tied to the load end of the sense resistor, the
SENSEHI pin can go up to 0.2V above V
+
. Supply current
is drawn through this pin.
SENSEHI (Pin 10): Sense Amplifier Input. The internal
sense amplifier will drive SENSEHI to the same potential
as SENSELO. A resistor (typically R
IN
) tied from supply
to SENSEHI sets the output current, I
OUT
= V
SENSE
/R
IN
,
where V
SENSE
is the voltage developed across R
SENSE
.
