3
LTC1255
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t
ON
Turn-ON Time V
S
= 10V, C
GATE
= 1000pF (Note 3)
Time for V
GATE
> V
S
+ 2V 30 100 300 µs
Time for V
GATE
> V
S
+ 5V 75 250 750 µs
V
S
= 18V, C
GATE
= 1000pF (Note 3)
Time for V
GATE
> V
S
+ 5V 40 120 400 µs
Time for V
GATE
> V
S
+ 10V 75 250 750 µs
V
S
= 24V, C
GATE
= 1000pF (Note 3)
Time for V
GATE
> V
S
+ 10V 50 180 500 µs
t
OFF
Turn-OFF Time V
S
= 10V, C
GATE
= 1000pF, (Note 3, 4) 10 24 60 µs
V
S
= 18V, C
GATE
= 1000pF, (Note 3, 4) 10 21 60 µs
V
S
= 24V, C
GATE
= 1000pF, (Note 3, 4) 10 19 60 µs
t
SC
Short-Circuit Turn-OFF Time V
S
= 10V, C
GATE
= 1000pF, (Note 3, 4) 5 16 30 µs
V
S
= 18V, C
GATE
= 1000pF, (Note 3, 4) 5 16 30 µs
V
S
= 24V, C
GATE
= 1000pF, (Note 3, 4) 5 16 30 µs
V
S
= 9V to 24V, T
A
= 25°C, unless otherwise noted.
E
LECTR
IC
AL C CHARA TERIST
ICS
The ● denotes specifications which apply over the full operating
temperature range.
Note 1: Quiescent current OFF is for both channels in OFF condition.
Note 2: Quiescent current ON is per driver and is measured independently.
The gate voltage is clamped to 12V above the rail to simulate the effects of
protection clamps connected across the GATE-SOURCE of the power
MOSFET.
Note 3: Zener diode clamps must be connected across the GATE-SOURCE
of the power MOSFET to limit V
GS
. 1N5242A (through hole) or
MMBZ5242A (surface mount) 12V Zener diodes are recommended. All
Turn-ON and Turn-OFF tests are performed with a 12V Zener clamp in
series with a small-signal diode connected between V
S
and the GATE
output to simulate the effects of a 12V protection Zener clamp connected
across the GATE-SOURCE of the power MOSFET.
Note 4: Time for V
GATE
to drop below 1V.
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
Standby Supply Current Gate Voltage Above SupplySupply Current per Driver (ON)
SUPPLY VOLTAGE (V)
0
0
V
GATE
– V
S
(V)
4
6
8
10
12
14
5
10
15 20
LTC1255 • TPC03
25
16
18
20
2
30
V
CLAMP
= 12V
SUPPLY VOLTAGE (V)
0
0
SUPPLY CURRENT (mA)
0.4
0.6
0.8
1.0
1.2
1.4
5
10
15 20
LTC1255 • TPC02
25
1.6
1.8
2.0
0.2
30
ONE INPUT = 0N
OTHER INPUT = OFF
T
A
= 25°C
SUPPLY VOLTAGE (V)
0
0
SUPPLY CURRENT (µA)
10
15
20
25
30
35
5
10
15 20
LTC1255 • TPC01
25
40
45
50
5
30
V
IN1
= V
IN2
= 0V
T
A
= 25°C