LTC1693
PIN FUNCTIONS
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.
BLOCK DIAGRA SM
IN1
GND1
IN2
GND2
1
2
3
4
LTC1693-1
DUAL NONINVERTING DRIVER
6
W
U
U
U
8
7
6
5
V
CC1
OUT1
V
CC2
OUT2
IN2
GND2
IN1
GND1
8
1
2
6
3
4
5
7
V
CC1
OUT1
V
CC2
OUT2
PHASE
NC
IN
GND
8
1
4
3
2
6
5
7
V
CC
OUT
NC
NC
LTC1693-2
TOPSIDE NONINVERTING DRIVER
AND BOTTOM SIDE INVERTING DRIVER
LTC1693-3
SINGLE DRIVER WITH
POLARITY SELECT
1693 BD
LINER [ LINEAR TECHNOLOGY ]
