Datasheet

LTC4444
5
4444fb
TYPICAL PERFORMANCE CHARACTERISTICS
Input Thresholds (TINP, BINP)
Hysteresis vs Temperature
V
CC
Undervoltage Lockout
Thresholds vs Temperature
Rise and Fall Time
vs V
CC
Supply Voltage
Rise and Fall Time
vs Load Capacitance
Peak Driver (TG, BG) Pull-Up
Current vs Temperature
Output Driver Pull-Down
Resistance vs Temperature
Propagation Delay
vs V
CC
Supply Voltage
Propagation Delay vs Temperature
TEMPERATURE (°C)
375
TG OR BG INPUT THRESHOLD HYSTERESIS (mV)
425
500
4444 G10
400
475
450
V
CC
= BOOST = 12V
TS = GND
–55 –25 5 35 65 95 125 150
–55 –25 5 35 65 95 125 150
TEMPERATURE (°C)
6.0
V
CC
SUPLLY VOLTAGE (V)
6.1
6.3
6.4
6.5
6.7
4444 G11
6.2
6.6
RISING THRESHOLD
FALLING THRESHOLD
BOOST = V
CC
TS = GND
SUPPLY VOLTAGE (V)
7
RISE/FALL TIME (ns)
12
28
30
22
26
32
9
11
12
4444 G12
8
20
16
10
24
6
18
14
8
10
13
14
T
A
= 25°C
BOOST = V
CC
TS = GND
C
L
= 3.3nF
t
r(TG)
t
r(BG)
t
f(TG)
t
f(BG)
LOAD CAPACITANCE (nF)
1
RISE/FALL TIME (ns)
40
50
60
9
4444 G13
30
20
0
3
5
7
210
4
6
8
10
80
70
t
r(TG)
t
r(BG)
t
f(TG)
t
f(BG)
T
A
= 25°C
V
CC
= BOOST = 12V
TS = GND
–55 –25 5 35 65 95 125 150
TEMPERATURE (°C)
2.0
PULL-UP CURRENT (A)
2.2
2.6
2.8
3.0
3.4
4444 G14
2.4
3.2
I
PU(BG)
I
PU(TG)
V
CC
= BOOST = 12V
TS = GND
TEMPERATURE (°C)
OUTPUT DRIVER PULL-DOWN RESISTACNE ()
1.2
1.6
2.0
2.2
4444 G15
0.8
0.4
1.0
1.4
1.8
0.6
0.2
V
CC
= 14V
V
CC
= 7V
R
DS(TG)
R
DS(BG)
BOOST-TS = 7V
–55 –25 5 35 65 95 125 150
BOOST-TS = 12V
V
CC
= 12V
BOOST-TS = 14V
SUPPLY VOLTAGE (V)
7
10
PROPAGATION DELAY (ns)
12
16
18
20
30
24
9
11
12
4444 G16
14
26
28
22
8
10
13
14
T
A
= 25°C
BOOST = V
CC
TS = GND
t
PLH(TG)
t
PLH(BG)
t
PHL(BG)
t
PHL(TG)
–55 –25 5 35 65 95
125 150
TEMPERATURE (°C)
2
PROPAGATION DELAY (ns)
7
17
22
27
37
4444 G17
12
32
V
CC
= BOOST = 12V
TS = GND
t
PLH(TG)
t
PHL(TG)
t
PLH(BG)
t
PHL(BG)