6
LTC1693
PIN FUNCTIONS
UUU
SO-8 Package (LTC1693-1, LTC1693-2)
IN1, IN2 (Pins 1, 3):
Driver Inputs. The inputs have V
CC
independent thresholds with 1.2V typical hysteresis to
improve noise immunity.
GND1, GND2 (Pins 2, 4): Driver Grounds. Connect to a
low impedance ground. The V
CC
bypass capacitor should
connect directly to this pin. The source of the external
MOSFET should also connect directly to the ground pin.
This minimizes the AC current path and improves signal
integrity. The ground pins should not be tied together if
isolation is required between the two drivers of the
LTC1693-1 and the LTC1693-2.
OUT 1, OUT2 (Pins 5, 7): Driver Outputs. The LTC1693-
1’s outputs are in phase with their respective inputs (IN1,
IN2). The LTC1693-2’s topside driver output (OUT1) is in
phase with its input (IN1) and the bottom side driver’s
output (OUT2) is opposite in phase with respect to its input
pin (IN2).
V
CC1
, V
CC2
(Pins 6, 8): Power Supply Inputs.
MSOP Package (LTC1693-3)
IN (Pin 1):
Driver Input. The input has V
CC
independent
thresholds with hysteresis to improve noise immunity.
NC (Pins 2, 5, 6): No Connect.
PHASE (Pin 3): Output Polarity Select. Connect this pin to
V
CC
or leave it floating for noninverting operation. Ground
this pin for inverting operation. The typical PHASE pin
input current when pulled low is 20µA.
GND (Pin 4): Driver Ground. Connect to a low impedance
ground. The V
CC
bypass capacitor should connect directly
to this pin. The source of the external MOSFET should also
connect directly to the ground pin. This minimizes the AC
current path and improves signal integrity.
OUT (Pin 7): Driver Output.
V
CC
(Pin 8): Power Supply Input.
V
CC1
8
LTC1693-1
DUAL NONINVERTING DRIVER
7
1
2
OUT1
IN1
GND1
V
CC2
6
5
3
4
OUT2
IN2
GND2
V
CC
8
LTC1693-3
SINGLE DRIVER WITH
POLARITY SELECT
7
1
4
OUT
IN
GND
NC
6
5
3
2
NC
1693 BD
PHASE
NC
V
CC1
8
LTC1693-2
TOPSIDE NONINVERTING DRIVER
AND BOTTOM SIDE INVERTING DRIVER
7
1
2
OUT1
IN1
GND1
V
CC2
6
5
3
4
OUT2
IN2
GND2
BLOCK DIAGRA SM
W
