LT8602 elecTrical characTerisTics The l denotes the specifications which apply over the full operatingjunction temperature range, otherwise specifications are at TA = 25°C. VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V, PVIN3 = PVIN4 = 3.3Vunless otherwise noted. (Note 2) PARAMETERCONDITIONSMINTYPMAXUNITSChannel 4 Operating Voltage l 2.6 5.5 V Feedback Voltage l 790 800 810 mV FB Voltage Line Regulation VIN = 3V to 42V 0.002 0.01 %/V Input Current FB4 l –100 100 nA SW4 Average Current Limit 1.8 3.1 3.5 A SW4 Leakage PVIN4 = 5.5V 0.1 1 µA SW4 PMOS On Resistance ISW4 = 1A 150 mΩ SW4 NMOS On Resistance ISW4 = 1A 120 mΩ Lower FB4 Power Good Threshold Percentage of VFB4 l 89 92 95 % Upper FB4 Power Good Threshold Percentage of VFB4 l 105 108 111 % PG4 Output Voltage Low IPG4 = –100μA l 0.1 0.2 V PG4 Leakage Current PG4 = 5V, FB4 = 0.8V l 30 µA RUN4 Threshold Voltage l 0.695 0.72 0.75 V RUN4 Input Current RUN4 = 3.3V l –100 100 nA Soft-Start Time l 0.7 1 1.3 ms Minimum Switch-On Time ISW4 = 1A 70 ns Minimum Switch-Off Time ISW1 = 1A 70 ns PVIN4 UVLO 2.35 2.6 V Power-On Reset CPOR Pull-Up Current CPOR = 0V 2 μA POR Delay Time CPOR = 1000pF 31 35.2 39.4 ms RST Output Voltage Low IRST = –100μA l 0.1 0.2 V RST Pull-Up Current POR Timed Out, RST = 0V 20 μA RST Leakage Current RST = 6V, EN/UVLO = 0V –40 40 nA POREN Threshold l 1.15 1.2 1.25 V POREN Pull-Up Current POREN = 0V 0.8 1.2 1.6 μA Note 1: Stresses beyond those listed under Absolute Maximum Ratings Note 3: This IC includes overtemperature protection that is intended to may cause permanent damage to the device. Exposure to any Absolute protect the device during overload conditions. Junction temperature will Maximum Rating condition for extended periods may affect device exceed 150°C when overtemperature protection is active. Continuous reliability and lifetime. operation above the specified maximum operating junction temperature Note 2: The LT8602E is guaranteed to meet performance specifications will reduce lifetime. from 0°C to 125°C junction temperature. Specifications over the –40°C Note 4: All four channels enabled as shown in the application circuit to 125°C operating junction temperature range are assured by design, details of front page application (using the 1MHz component values) found characterization and correlation with statistical process controls. The in the Typical Application section. LT8602I is guaranteed to meet performance specifications from –40°C to 125°C junction temperature. 8602fb For more information www.linear.com/LT8602 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
