Datasheet LTM8028 (Analog Devices) - 3

LTM8028
elecTrical characTerisTics The
l
denotes the specifications which apply over the full internal operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, RUN = 3V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Quiescent Current Into VIN RUN = 0V 1 µA No load 35 mA Line Regulation 6V < VIN < 36V, IOUT = 10mA l 1 mV Load Regulation 0.01A < IOUT < 5A, VOUT = 0.8V, BKV = 1.05V, RUN = 0V –1.5 –3 mV l –5.5 mV 0.01A < IOUT < 5A, VOUT = 1.0V, BKV = 1.25V, RUN = 0V –2 –4 mV l –7.5 mV 0.01A < IOUT < 5A, VOUT = 1.2V, BKV = 1.45V, RUN = 0V –2 –4 mV l –7.5 mV 0.01A < IOUT < 5A, VOUT = 1.5V, BKV = 1.75V, RUN = 0V –2.5 –5 mV l –9 mV 0.01A < IOUT < 5A, VOUT = 1.8V, BKV = 2.05V, RUN = 0V –3 –7 mV l –13 mV Sense Pin Current VOUT = 0.8V 50 µA VOUT = 1.8V 300 µA Switching Frequency RT = 40.2k 1000 kHz RT = 200k 200 kHz RUN Pin Current RUN = 1.45V 5.5 µA RUN Threshold Voltage (Falling) l 1.49 1.55 1.61 V RUN Input Hysteresis 130 mV IMAX Pin Current IMAX = 0.75V 125 µA IMAX Current Limit Accuracy IMAX = 1.5V 5.0 6.1 A IMAX = 0.75V 2.20 3.6 A SS Pin Current 11 µA SYNC Input Threshold fSYNC = 500kHz 0.6 1.3 V SYNC Bias Current SYNC = 0V 1 µA VOB Voltage 3.3 V VOx Input Low Threshold VOB = 3.3V l 0.25 V VOx Input High Threshold VOB = 3.3V l 3.05 V VOx Input Z Range VOB = 3.3V l 0.75 2.4 V VOx Input Current High 40 µA VOx Input Current Low 40 µA MARGA Pin Current MARGA = 0V 3.5 μA PGOOD Threshold VOUT(NOMINAL) = 1.0V, VOUT Rising 0.9 V VOUT(NOMINAL) = 1.0V, VOUT Falling 0.85 V Output Voltage Noise (Note 3) VOUT = 1.8V, COUT = 137µF, 5A Load, BW = 10Hz to 100kHz 40 µVRMS
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings guaranteed to meet specifications over the full –55°C to 125°C internal may cause permanent damage to the device. Exposure to any Absolute operating temperature range. Note that the maximum internal temperature Maximum Rating condition for extended periods may affect device is determined by specific operating conditions in conjunction with board reliability and lifetime. layout, the rated package thermal resistance and other environmental
Note 2:
The LTM8028E is guaranteed to meet performance specifications factors. from 0°C to 125°C internal. Specifications over the full –40°C to
Note 3:
Guaranteed by design, characterization and correlation with 125°C internal operating temperature range are assured by design, statistical process controls. characterization and correlation with statistical process controls.
Note 4:
Unless otherwise stated, the absolute minimum voltage is zero. The LTM8028I is guaranteed to meet specifications over the full –40°C to 125°C internal operating temperature range. The LTM8028MP is 8028fb For more information www.linear.com/LTM8028 3 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 Package Photo Revision History Typical Application Related Parts