Datasheet LT3790 (Analog Devices) - 3

LT3790
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 12V, VEN/UVLO = 12V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Logic Inputs
EN/UVLO Falling Threshold l 1.16 1.2 1.24 V EN/UVLO Rising Hysteresis 15 mV EN/UVLO Input Low Voltage IVIN Drops Below 1µA 0.3 V EN/UVLO Pin Bias Current Low VEN/UVLO = 1V 2 3 4 µA EN/UVLO Pin Bias Current High VEN/UVLO = 1.6V 10 100 nA CCM Threshold Voltage 0.3 1.5 V CTRL Input Bias Current VCTRL = 1V 20 50 nA CTRL Latch-Off Threshold Rising 45 50 55 mV CTRL Latch-Off Hysteresis 13 mV OVLO Rising Shutdown Voltage l 2.85 3 3.15 V OVLO Falling Hysteresis 75 mV
Regulation
VREF Voltage l 1.96 2.00 2.04 V VREF Line Regulation 4.7V < VIN < 60V 0.002 0.04 %/V V(ISP-ISN) Threshold VCTRL = 2V, VISP = 12V/0.1V 58 60 62 mV l 56 60 64 mV VCTRL = 1V, VISP = 12V/0.1V 48 50 52 mV l 46 50 54 mV VCTRL = 600mV, VISP = 12V/0.1V 28 30 32 mV l 26 30 34 mV VCTRL = 100mV, VISP = 12V/0.1V 1 4.2 7.4 mV l 0.2 4.2 8.2 mV ISP Bias Current VISP = 12V, VISN = 11.9V 110 µA ISN Bias Current VISP = 12V, VISN = 11.9V 20 µA Output Current Sense Common Mode Range 0 60 V Output Current Sense Amplifier gm 1650 µS ISMON Monitor Voltage V(ISP-ISN) = 60mV l 1.14 1.2 1.26 V Input Current Sense Threshold V(IVINP-IVINN) 3V ≤ VIVINP ≤ 60V l 46.5 50 54 mV IVINP Bias Current VIVINP = VIVINN = 12V 90 µA IVINN Bias Current VIVINP = VIVINN = 12V 20 µA Input Current Sense Common Mode Range 3 60 V Input Current Sense Amplifier gm 2.12 mS IVINMON Monitor Voltage V(IVINP-IVINN) = 50mV l 0.96 1 1.04 V FB Regulation Voltage 1.194 1.2 1.206 V l 1.176 1.2 1.220 V FB Line Regulation 4.7V < VIN < 60V 0.002 0.025 %/V FB Amplifier gm 565 µS FB Pin Input Bias Current FB in Regulation 100 200 nA VC Standby Input Bias Current PWM = 0V –20 20 nA VSENSE(MAX) (VSNSP-SNSN) Boost l 42 51 60 mV Buck l –56 –47.5 –39 mV
Fault
SS Pull-Up Current VSS = 0V 14 µA SS Discharge Current 1.4 µA 3790fa For more information www.linear.com/LT3790 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Electrical Characteristics Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Application Related Parts