LT3492IUFD-TRPBF データシートの表示（PDF） - Linear Technology
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LT3492IUFD-TRPBF Datasheet PDF : 20 Pages
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LT3492
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 5V, SHDN = 5V, PWM1-3 = 5V, FADJ = 0.5V, CTRL1-3 = 1.5V,
OVP1-3 = 0V, unless otherwise noted.
PARAMETER
SHDN Input Low Voltage
SHDN Input High Voltage
SHDN Pin Current
PWM1-3 Input Low Voltage
PWM1-3 Input High Voltage
PWM1-3 Pin Current
Gate Off Voltage (ISP1-3–TG1-3)
Gate On Voltage (ISP1-3–TG1-3)
Gate Turn-On Delay
Gate Turn-Off Delay
CONDITIONS
SHDN = 5V, Current Into Pin
Current Into Pin
ISP1-3 = 60V, PWM1-3 = 0V
ISP1-3 = 60V
CLOAD = 300pF, ISP1-3 = 60V (Note 5)
CLOAD = 300pF, ISP1-3 = 60V (Note 5)
MIN TYP MAX UNITS
0.4
V
1.5
V
65
120
μA
0.4
V
1.2
V
160
210
μA
0.1
0.3
V
5.5
6.5
7.5
V
110
ns
110
ns
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3492E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3492I is guaranteed over the full –40°C to 125°C operating junction
temperature range.
Note 3: Current flows into pin. Current limit and switch VCESAT is
guaranteed by design and/or correlation to static test.
Note 4: Absolute maximum voltage at the VIN and SHDN pins is 40V for
nonrepetitive 1 second transients, and 30V for continuous operation.
Note 5: Gate turn-on/turn-off delay is measured from 50% level of PWM
voltage to 90% level of gate on/off voltage.
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted)
Quiescent Current
14
12
PWM1-3 = 5V
10
8
6
PWM1-3 = 0V
4
2
VC = GND, NOT SWITCHING
0
0
10
20
30
40
VIN (V)
3492 G01
Switch On Voltage
600
500
400
300
200
100
0
0
200 400 600 800 1000
SWITCH CURRENT (mA)
3492 G02
Switch Current Limit
vs Duty Cycle
1200
1000
800
600
400
200
0
0
20
40
60
80 100
DUTY CYCLE (%)
3492 G03
3492f
4
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