link to page 2 link to page 1 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 FB4 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 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 200mV/ms Falling Ramp 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 ISW4 = 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. The LT8602J is guaranteed over the full –40°C to 150°C operating junction temperature range. High junction temperatures degrade operating lifetimes. Operating lifetime is derated at junction temperatures above 125°C. Rev. C For more information www.analog.com 5 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
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