Datasheet LT8602 (Analog Devices) - 4

LT8602
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C. VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V, PVIN3 = PVIN4 = 3.3V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
PG1 Leakage Current PG1 = 5V, FB1 = 1V l 30 µA TRKSS1 Pull-Up Current SS1 = 0.2V 1.5 2.4 3.1 μA Minimum Switch-On Time ISW1 = 1A 60 ns Minimum Switch-Off Time ISW1 = 1A 70 ns
Channel 2
Feedback Voltage FB2 E-, I-Grade l 0.988 1 1.012 V J-Grade l 0.98 1 1.015 V FB Voltage Line Regulation VIN = 3V to 42V 0.002 0.01 %/V Input Current FB2 l –100 100 nA SW2 Peak Current Limit VIN = PVIN2 = 6V 3.5 4.0 4.5 A SW2 Leakage Current 0.1 1 µA SW2 Top On Resistance ISW2 = 1A 150 mΩ SW2 Bottom On Resistance ISW2 = 1A 100 mΩ Lower FB2 Power Good Threshold Percentage of VFB2 l 89 92 95 % Upper FB2 Power Good Threshold Percentage of VFB2 l 105 108 111 % PG2 Output Voltage Low IPG2 = –100μA l 0.1 0.2 V PG2 Leakage Current PG2 = 5V, FB2 = 1V l 30 µA TRKSS2 Pull-Up Current SS2 = 0.2V 1.5 2.4 3.1 µA Minimum Switch-On Time ISW2 = 2A 60 ns Minimum Switch-Off Time ISW2 = 2A 70 ns
Channel 3
Operating Voltage l 2.6 5.5 V Feedback Voltage FB3 E-, I-Grade l 790 800 810 mV J-Grade l 784 800 812 mV FB Voltage Line Regulation VIN = 3V to 42V 0.002 0.01 %/V Input Current FB3 l –100 100 nA SW3 Average Current Limit 1.8 3.1 3.5 A SW3 Leakage PVIN3 = 5.5V 0.1 1 µA SW3 PMOS On Resistance ISW3 = 1A 150 mΩ SW3 NMOS On Resistance ISW3 = 1A 120 mΩ Lower FB3 Power Good Threshold Percentage of VFB3 l 89 92 95 % Upper FB3 Power Good Threshold Percentage of VFB3 l 105 108 111 % PG3 Output Voltage Low IPG3 = –100μA l 0.1 0.2 V PG3 Leakage Current PG3 = 5V, FB3 = 0.8V l 30 µA RUN3 Threshold Voltage 200mV/ms Falling Ramp l 0.695 0.72 0.75 V RUN3 Input Current RUN3 = 3.3V l –100 100 nA Soft-Start Time l 0.7 1 1.3 ms Minimum Switch-On Time ISW3 = 1A 70 ns Minimum Switch-Off Time ISW3 = 1A 70 ns PVIN3 UVLO 2.35 2.6 V Rev. C 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package Description Revision History Typical Application Related Parts