LT3492 ELECTRICAL CHARACTERISTICSThe l denotes the specifi cations which apply over the full operatingtemperature range, otherwise specifi cations 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.PARAMETERCONDITIONSMINTYPMAXUNITS 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 CLOAD = 300pF, ISP1-3 = 60V (Note 5) 110 ns Gate Turn-Off Delay CLOAD = 300pF, ISP1-3 = 60V (Note 5) 110 ns Note 1: Stresses beyond those listed under Absolute Maximum Ratings Note 3: Current fl ows into pin. Current limit and switch VCESAT is may cause permanent damage to the device. Exposure to any Absolute guaranteed by design and/or correlation to static test. Maximum Rating condition for extended periods may affect device Note 4: Absolute maximum voltage at the VIN and SHDN pins is 40V for reliability and lifetime. nonrepetitive 1 second transients, and 30V for continuous operation. Note 2: The LT3492E is guaranteed to meet performance specifi cations Note 5: Gate turn-on/turn-off delay is measured from 50% level of PWM from 0°C to 125°C junction temperature. Specifi cations over the –40°C 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
