Datasheet
LTC4446
4
4446f
TYPICAL PERFORMANCE CHARACTERISTICS
Boost Supply Current
vs Temperature
Output Low Voltage (V
OL
)
vs Supply Voltage
Output High Voltage (V
OH
) vs
Supply Voltage
Input Thresholds (TINP, BINP) vs
Supply Voltage
Input Thresholds (TINP, BINP) vs
Temperature
Input Thresholds (TINP, BINP)
Hysteresis vs Voltage
Input Thresholds (TINP, BINP)
Hysteresis vs Temperature
V
CC
Undervoltage Lockout
Thresholds vs Temperature
Rise and Fall Time vs
V
CC
Supply Voltage
TEMPERATURE (°C)
BOOST SUPPLY CURRENT (μA)
250
300
350
4446 G04
150
0
–40 –25 –10 5 20 35 50 65 80 95 110
125
400
200
100
50
TINP = 12V
BINP = 0V
TINP = 0V
BINP = 12V
TINP = BINP = 0V
V
CC
= BOOST = 12V
TS = GND
SUPPLY VOLTAGE (V)
7
OUTPUT VOLTAGE (mV)
140
10
4446 G05
80
40
89 11
20
0
160
120
100
60
12 13 14
V
OL(TG)
V
OL(BG)
T
A
= 25°C
I
TG(BG)
= 100mA
BOOST = V
CC
TS = GND
SUPPLY VOLTAGE (V)
7
5
TG OR BG OUTPUT VOLTAGE (V)
6
8
9
10
15
12
9
11
12
4446 G06
7
13
–1mA
14
11
8
10
13
14
T
A
= 25°C
BOOST = V
CC
TS = GND
–10mA
–100mA
SUPPLY VOLTAGE (V)
7
2.1
TG OR BG INPUT THRESHOLD (V)
2.2
2.4
2.5
2.6
3.1
2.8
9
11
12
4446 G07
2.3
2.9
3.0
2.7
8
10
13
14
T
A
= 25°C
BOOST = V
CC
TS = GND
V
IH(TG,BG)
V
IL(TG,BG)
TEMPERATURE (°C)
–25
TG OR BG INPUT THRESHOLD (V)
2.6
2.8
3.0
95
4446 G08
2.4
2.2
2.5
2.7
2.9
2.3
2.1
2.0
5
35
65
–10–40 110
20
50
80
125
V
CC
= BOOST = 12V
TS = GND
V
IH(TG,BG)
V
IL(TG,BG)
SUPPLY VOLTAGE (V)
78
375
TG OR BG INPUT THRESHOLD HYSTERESIS (mV)
425
500
9
11
12
4446 G09
400
475
450
10
13
14
T
A
= 25°C
V
CC
= BOOST
TS = GND
TEMPERATURE (°C)
–40 –25
375
TG OR BG INPUT THRESHOLD HYSTERESIS (mV)
425
500
–10 5 20
50 65
80
4446 G10
400
475
450
35
11095
125
V
CC
= BOOST = 12V
TS = GND
TEMPERATURE (°C)
–40
6.0
V
CC
SUPLLY VOLTAGE (V)
6.1
6.3
6.4
6.5
6.7
–25
35
65
4446 G11
6.2
6.6
20
95
125110
–10
5
50 80
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
4446 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)