LTM8024 ELECTRICAL CHARACTERISTICSThe l denotes the specifications which apply over the specified operating internaltemperature range, otherwise specifications are at TA = 25°C. VIN1 = VIN2 = 12V. RUN1 = RUN2 = 2V unless otherwise noted (Note 2). PARAMETERCONDITIONSMINTYPMAXUNITS Minimum VIN1 Input Voltage l 3.0 V Minimum VIN2 Input Voltage VIN1 = 3V l 2.0 V Output DC Voltage FBn open 0.8 V FBn = 21.5kΩ 10 V Maximum Output DC Current (Note 3) 6 A Quiescent Current into VINn RUN1 = 0 5 μA BIAS = 5V, SYNC = 0V, No Load 90 µA BIAS = 5V, SYNC = 3.3V, No Load 16 mA Current into BIAS RUNn = 0, BIAS = 5V 0.5 μA BIAS = 5V, SYNC = 3.3V, No Load 17 mA Line Regulation 5.5V < VINn < 36V, IOUTn = 1A 0.2 % Load Regulation 12VINn, 0.1A < IOUTn < 4A 0.4 % Output RMS Ripple 3.3VOUTn, IOUTn = 4A 10 mV FBn Voltage 800 mV l 784 816 mV Current out of FBn VOUTn = 1V, FBn = 0V 4 µA Minimum BIAS for Proper Operation 3.2 V Switching Frequency RT = 200kΩ 200 kHz RT = 35.7kΩ 1 MHz RT = 8.06kΩ 3 MHz RUNn Threshold 0.74 V RUNn Input Current RUNn = 0V 1 μA PGn Threshold at FBn Lower Threshold 740 mV Upper Threshold 860 mV PGn Output Sink Current PGn = 0.1V 100 μA CLKOUT VOL 0.1 V CLKOUT VOH 3.2 V SYNC Input High Threshold 1.5 V SYNC Input Low Threshold 0.8 V SYNC Threshold to Enable Spread Spectrum 2.8 4.0 V SYNC Current SYNC = 6V 130 μA TRSSn Source Current TRSSn = 0V 2 μA TRSSn Pull-Down Resistance Fault Condition, TRSSn = 0.1V 200 Ω Note 1: Stresses beyond those listed under Absolute Maximum Ratings The LTM8024I is guaranteed to meet specifications over the full –40°C may cause permanent damage to the device. Exposure to any Absolute to 125°C internal operating temperature range. Note that the maximum Maximum Rating condition for extended periods may affect device internal temperature is determined by specific operating conditions in reliability and lifetime. conjunction with board layout, the rated package thermal resistance and Note 2: The LTM8024E is guaranteed to meet performance specifications other environmental factors. from 0°C to 125°C internal. Specifications over the full –40°C to Note 3: The maximum current out of either channel may be limited by the 125°C internal operating temperature range are assured by design, internal temperature of the LTM8024. See output current derating curves characterization and correlation with statistical process controls. for different VIN, VOUT and TA. Rev. A For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package PHOTOGRAPH Revision History Typical Application Related Parts
