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LT3492
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 5V, SHDN = 5V, PWM1-3 = 5V, FADJ = 0.5V, CTRL1-3 = 1.5V,
OVP1-3 = 0V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ISP1-3 Input Bias Current
ISP1-3, ISN1-3 Idle Input Bias Current
ISP1-3, ISN1-3 Input Bias Current in Shutdown
PWM1-3 = 0V
SHDN = 0V
180
250
1
1
μA
μA
μA
SHDN Input Low Voltage
SHDN Input High Voltage
1.5
0.4
V
V
SHDN Pin Current
SHDN = 5V, Current Into Pin
65
120
μA
PWM1-3 Input Low Voltage
PWM1-3 Input High Voltage
1.2
0.4
V
V
PWM1-3 Pin Current
Gate Off Voltage (ISP1-3–TG1-3)
Current Into Pin
ISP1-3 = 60V, PWM1-3 = 0V
160
0.1
210
0.3
μA
V
Gate On Voltage (ISP1-3–TG1-3)
Gate Turn-On Delay
Gate Turn-Off Delay
ISP1-3 = 60V
C LOAD = 300pF, ISP1-3 = 60V (Note 5)
C LOAD = 300pF, ISP1-3 = 60V (Note 5)
5.5
6.5
110
110
7.5
V
ns
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 speci?cations
from 0°C to 125°C junction temperature. Speci?cations over the –40°C
Note 3: Current ?ows into pin. Current limit and switch V CESAT is
guaranteed by design and/or correlation to static test.
Note 4: Absolute maximum voltage at the V IN 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.
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.
3492fa
4
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