LTC6103 datasheet(9/28 Pages) AD

9 / 28 page

LT6119-1/LT6119-2

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 comparator 2. 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, RIN.

V+ (Pin 9): Positive Supply Pin. The V+ pin can be con-

nected directly to either side of the sense resistor, RSENSE.

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 RIN) tied from supply

to SENSEHI sets the output current, IOUT = VSENSE/RIN,

where VSENSE is the voltage developed across RSENSE.

LTC6103 Datasheet(PDF) 9 Page - Analog Devices