LTC1473CGN 데이터 시트보기 (PDF) - Linear Technology
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LTC1473CGN Datasheet PDF : 16 Pages
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LTC1473
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formula:
TJ = TA + (PD)(150°C/W)
Note 3: IS increases by the same amount as IBSENSE+ + IBSENSE– when
their common mode falls below 5V.
Note 4: Gate turn-on and turn-off times are measured with no inrush
current limiting, i.e., VSENSE = 0V. Gate rise times are measured from 1V to
4.5V and fall times are measured from 4.5V to 1V. Delay times are
measured from the input transition to when the gate voltage has risen or
fallen to 3V.
TYPICAL PERFORMANCE CHARACTERISTICS
DC Supply Current
vs Supply Voltage
160
140
VDIODE = VIN1 = 5V
120
VIN2 = 0V
100
80
VDIODE = 5V
VIN1 = VIN2 = 0V
60
40
20
VSENSE+ = VSENSE– = V+
0
0 5 10 15 20 25 30 35 40
SUPPLY VOLTAGE (V)
1473 G01
VGS Gate-to-Source ON Voltage
vs Temperature
6.0 V+ = VSAB =20V
5.9
5.8
5.7
5.6
5.5
5.4
5.3
5.2
5.1
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1473 G04
DC Supply Current
vs Temperature
140 V+ = 20V
130
VDIODE = VIN1 = 5V
120
VIN2 = 0V
110
100
VDIODE = 5V
VIN1 = VIN2 = 0V
90
80
70
60
50
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1473 G02
Undervoltage Lockout Threshold (V+)
vs Temperature
5.5
5.0
START-UP
4.5
THRESHOLD
4.0
SHUTDOWN
3.5
THRESHOLD
3.0
2.5
2.0
1.5
1.0
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1473 G05
DC Supply Current vs VSENSE
500
V+ = 20V
450
VDIODE = VIN1 = 5V
VIN2 = 0V
400
VSENSE+ – VSENSE– = 0V
350
300
250
200
150
100
0
2.5 5 7.5 10 12.5 15 17.5 20
|VSENSE| COMMON MODE(V)
1473 • TPC02.5
VGS Gate Supply Voltage
vs Temperature
9.0 V+ = 20V
8.9 VGS = VGG – V+
8.8
8.7
8.6
8.5
8.4
8.3
8.2
8.1
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1473 G03
3
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