LTC4440 Linear Technology, LTC4440 Datasheet - Page 5

• Manufacturer Part Number: LTC4440
• Description: High Speed High Voltage High Side Gate Driver
• Manufacturer: Linear Technology

PI FU CTIO S
SOT-23 Package
V
side circuitry. A low ESR ceramic bypass capacitor should
be tied between this pin and the GND pin (Pin 2).
GND (Pin 2): Chip Ground.
INP (Pin 3): Input Signal. TTL/CMOS compatible input
referenced to GND (Pin 2).
TS (Pin 4): Top (High Side) Source Connection.
TYPICAL PERFOR A CE CHARACTERISTICS
CC
U
(Pin 1): Chip Supply. This pin powers the internal low
U
500
480
460
440
420
400
380
360
340
320
300
3.0
2.5
1.5
2.0
1.0
0.5
0
–60
–60
U
Input Threshold Hysteresis
vs Temperature
Output Driver Pull-Down
Resistance vs Temperature
V
IH
BOOST – TS = 8V
-V
–30
–30
IL
(V
BOOST – TS = 12V
CC
W
V
TEMPERATURE (°C)
TEMPERATURE (°C)
IH
= 8V)
0
0
-V
V
IL
IH
(V
U
-V
30
30
CC
IL
BOOST – TS = 15V
= 12V)
(V
CC
60
60
= 15V)
90
90
4440 G13
4440 G15
120
120
TG (Pin 5): High Current Gate Driver Output (Top Gate).
This pin swings between TS and BOOST.
BOOST (Pin 6): High Side Bootstrapped Supply. An exter-
nal capacitor should be tied between this pin and TS
(Pin 4). Normally, a bootstrap diode is connected between
V
V
drop of the bootstrap diode.
CC
CC
– V
(Pin 1) and this pin. Voltage swing at this pin is from
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
45
40
35
30
25
20
15
10
D
5
0
–60
–60
Peak Driver (TG) Pull-Up Current
vs Temperature
to V
Propagation Delay vs Temperature
(V
BOOST – TS = 12V
CC
IN
–30
–30
= BOOST = 12V)
+ V
TEMPERATURE (°C)
TEMPERATURE (°C)
CC
0
0
t
PLH
BOOST – TS = 15V
– V
30
30
D
, where V
60
60
t
PHL
90
90
www.DataSheet4U.com
D
4440 G14
4440 G16
is the forward voltage
120
120
LTC4440
5
4440f