Datasheet

LTC6090
8
6090fa
pin FuncTions
COM (Pin 1/Pin 1): COM Pin is used to interface OD and
TFLAG pins to voltage control circuits. Tie this pin to the
low voltage ground, or let it float.
–IN (Pin 2/Pin 4): Inverting Input Pin. Input common
mode range is V
–
+ 3V to V
+
– 3V. Do not exceed absolute
maximum voltage range.
+IN (Pin 3/Pin 5): Noninverting Input Pin. Input common
mode range is V
–
+ 3V to V
+
– 3V. Do not exceed absolute
maximum voltage range.
V
–
(Pin 4, Exposed Pad Pin 9/Pin 8, Exposed Pad
Pin 17): Negative Supply Pin. Connect to V
–
Only. To
achieve low thermal resistance connect this pin to the
V
–
power plane. The V
–
power plane connection removes
heat from the device and should be electrically isolated
from all other power planes.
TFLAG (Pins 5, 9/Pins 9, 17): Temperature Flag Pin. The
TFLAG pin is an open drain output that sinks current when
the die temperature exceeds 145°C.
OUT (Pin 6/Pin 12): Output Pin. If this rail-to-rail output
goes below V
–
, the ESD protection diode will forward
bias. If OUT goes above V
+
, then output device diodes
will forward bias. Avoid forward biasing the diodes on the
OUT pin.
Excessive current can cause damage.
V
+
(Pin 7/Pin 14): Positive Supply Pin.
OD (Pin 8/Pin 16): Output Disable Pin. Active low input
disables the output stage. If left open, an internal pull-up
resistor enables the amplifier. Input voltage levels are
referred to the COM pin.
GUARD (NA/Pins 2, 3, 6, 7, 10, 11, 13, 15): Guard pins
increase clearance and creepage between other pins.
Pins 3 and 6 can be used to build guard rings around the
inputs.
(S8E/FE)
Typical perForMance characTerisTics
Thermal Shutdown Hysteresis
Output Slewing with A
V
= –10
Open Circuit Voltage of COM, OD,
TFLAG
JUNCTION TEMPERATURE (°C)
SUPPLY CURRENT (mA)
6090 G28
3.0
0
0.5
1.0
2.5
2.0
1.5
162 178170166164 168 176174172
2.5µs/DIV
OUTPUT
20V/DIV
6090 G29
2.5µs/DIV
OUTPUT
20V/DIV
6090 G29
TOTAL SUPPLY VOLTAGE (V)
PIN VOLTAGE (V)
6090 G30
100
0
20
40
80
60
0 140804020 60 120100
OD
COM
TFLAG
V
–
= 0V