LT3492
4
3492fa
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 specifi cations
from 0°C to 125°C junction temperature. Specifi cations 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.
ELECTRICAL CHARACTERISTICS
Note 3: Current fl 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.
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi 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 180 250 µA
ISP1-3, ISN1-3 Idle Input Bias Current PWM1-3 = 0V 1 µA
ISP1-3, ISN1-3 Input Bias Current in Shutdown SHDN = 0V 1 µA
SHDN Input Low Voltage 0.4 V
SHDN Input High Voltage 1.5 V
SHDN Pin Current SHDN = 5V, Current Into Pin 65 120 µA
PWM1-3 Input Low Voltage 0.4 V
PWM1-3 Input High Voltage 1.2 V
PWM1-3 Pin Current Current Into Pin 160 210 µA
Gate Off Voltage (ISP1-3–TG1-3) ISP1-3 = 60V, PWM1-3 = 0V 0.1 0.3 V
Gate On Voltage (ISP1-3–TG1-3) ISP1-3 = 60V 5.5 6.5 7.5 V
Gate Turn-On Delay C
LOAD
= 300pF, ISP1-3 = 60V (Note 5) 110 ns
Gate Turn-Off Delay C
LOAD
= 300pF, ISP1-3 = 60V (Note 5) 110 ns
