LTC1255C データシートの表示（PDF） - Linear Technology
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LTC1255C Datasheet PDF : 16 Pages
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LTC1255
ELECTRICAL CHARACTERISTICS VS = 9V to 24V, TA = 25°C, unless otherwise noted.
SYMBOL
tON
PARAMETER
Turn-ON Time
tOFF
Turn-OFF Time
tSC
Short-Circuit Turn-OFF Time
CONDITIONS
VS = 10V, CGATE = 1000pF (Note 3)
Time for VGATE > VS + 2V
Time for VGATE > VS + 5V
VS = 18V, CGATE = 1000pF (Note 3)
Time for VGATE > VS + 5V
Time for VGATE > VS + 10V
VS = 24V, CGATE = 1000pF (Note 3)
Time for VGATE > VS + 10V
VS = 10V, CGATE = 1000pF, (Note 3, 4)
VS = 18V, CGATE = 1000pF, (Note 3, 4)
VS = 24V, CGATE = 1000pF, (Note 3, 4)
VS = 10V, CGATE = 1000pF, (Note 3, 4)
VS = 18V, CGATE = 1000pF, (Note 3, 4)
VS = 24V, CGATE = 1000pF, (Note 3, 4)
MIN TYP MAX
30
100 300
75
250 750
40
120 400
75
250 750
50
180 500
10
24
60
10
21
60
10
19
60
5
16
30
5
16
30
5
16
30
UNITS
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
The q 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 VGS. 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 VS 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 VGATE to drop below 1V.
TYPICAL PERFOR A CE CHARACTERISTICS
Standby Supply Current
50
45
VIN1 = VIN2 = 0V
TA = 25°C
40
35
30
25
20
15
10
5
0
0
5 10 15 20 25 30
SUPPLY VOLTAGE (V)
LTC1255 • TPC01
Supply Current per Driver (ON)
2.0
ONE INPUT = 0N
1.8 OTHER INPUT = OFF
1.6 TA = 25°C
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0 5 10 15 20 25 30
SUPPLY VOLTAGE (V)
LTC1255 • TPC02
Gate Voltage Above Supply
20
18 VCLAMP = 12V
16
14
12
10
8
6
4
2
0
0 5 10 15 20 25 30
SUPPLY VOLTAGE (V)
LTC1255 • TPC03
3
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