LTM8025 ELECTRICAL CHARACTERISTICSThe l denotes the specifications which apply over the full operatingtemperature range, otherwise specifications are at TA = 25°C. VIN = 12V, RUN/SS = 12V, BIAS = 3V unless otherwise noted. (Note 2) PARAMETERCONDITIONSMINTYPMAXUNITS Minimum Input Voltage l 3.6 V Output DC Voltage RADJ Open 0.8 V RADJ = 16.9k; VIN = 36V 24 V Output DC Current VOUT = 3.3V 0 3 A Quiescent Current into VIN RUN/SS = 0V 0.01 1 µA Not Switching 25 60 µA BIAS = 0V, Not Switching 85 150 µA Quiescent Current into BIAS RUN/SS = 0V 0.01 0.5 µA Not Switching 65 120 µA BIAS = 0V, Not Switching 0 5 µA Line Regulation 5.5V < VIN < 36V, IOUT = 1A 0.3 % Load Regulation 0A < IOUT < 3A 0.4 % Output Voltage Ripple (RMS) 0A < IOUT < 3A 10 mV Switching Frequency RT = 45.3k 775 kHz Voltage (at ADJ Pin) 775 790 805 mV l 770 810 mV Current Out of ADJ Pin ADJ = 1V, VOUT = 0V 2 µA Minimum BIAS Voltage for Proper Operation 2 2.8 V RUN/SS Pin Current RUN/SS = 2.5V 5 10 µA RUN Input High Voltage 2.5 V RUN Input Low Voltage 0.2 V PGOOD Threshold (at ADJ Pin) VOUT Rising 710 mV PGOOD Leakage Current PGOOD = 30V 0.1 1 µA PGOOD Sink Current PGOOD = 0.4V 200 700 µA SYNC Input Low Threshold fSYNC = 550kHz 0.5 V SYNC Input High Threshold fSYNC = 550kHz 0.7 V SYNC Bias Current SYNC = 0V 0.1 µA Note 1: Stresses beyond those listed under Absolute Maximum Ratings characterization and correlation with statistical process controls. The may cause permanent damage to the device. Exposure to any Absolute LTM8025I is guaranteed to meet specifications over the full –40°C Maximum Rating condition for extended periods may affect device to 125°C internal operating temperature range. The LTM8025MP is reliability and lifetime. guaranteed to meet specifications over the full –55°C to 125°C internal Note 2: The LTM8025E is guaranteed to meet performance specifications operating temperature range. Note that the maximum internal temperature from 0°C to 125°C internal. Specifications over the full –40°C to is determined by specific operating conditions in conjunction with board 125°C internal operating temperature range are assured by design, layout, the rated package thermal resistance and other environmental factors. Rev. D For more information www.analog.com 3 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 Package Description Revision History Package Photography Typical Application Related Parts
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