LTC4440A-5
6
4440a5f
For more information www.linear.com/LTC4440A-5
pin FuncTions
block DiagraM
TiMing DiagraM
INP (Pin 1): Input Signal. TTL/CMOS compatible input
referenced to GND (Pin 2).
GND (Pins 2, 4, Exposed Pad Pin 9): Ground. The exposed
pad must be electrically connected to Pins 2 and 4 and
soldered to PCB ground for rated thermal performance.
V
CC
(Pin 3): Chip Supply. This pin powers the internal low
side circuitry. A low ESR ceramic bypass capacitor should
be tied between this pin and the GND pin (Pin 2).
NC (Pin 5): No Connect. No connection required. For
convenience, this pin may be tied to Pin 6 (BOOST) on
the application board.
BOOST (Pin 6): High Side Bootstrapped Supply. An external
capacitor should be tied between this pin and TS (Pin8).
Normally, a bootstrap diode is connected between V
CC
(Pin3) and this pin. Voltage swing at this pin is from V
CC
– V
D
to V
IN
+ V
CC
– V
D
, where V
D
is the forward voltage
drop of the bootstrap diode.
TG (Pin 7): High Current Gate Driver Output (Top Gate).
This pin swings between TS and BOOST.
TS (Pin 8): Top (High Side) source connection or GND if
used in ground referenced applications.
BOOST
TG
BOOST
4440A5 BD
V
IN
UP TO 80V,
TRANSIENT
UP TO 100V
TS
UNDERVOLTAGE
LOCKOUT
LEVEL SHIFTER
V
CC
4V TO 15V
GND
INP
V
IH
90%
10%
t
r
INPUT (INP)
OUTPUT (TG)
INPUT RISE/FALL TIME <10ns
V
IL
t
f
t
t