Datasheet LTC3780 (Analog Devices) - 5

link to page 17 LTC3780
ELECTRICAL CHARACTERISTICS The
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denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C. (Note 7) VIN = 15V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS PGOOD Output
∆VFBH PGOOD Upper Threshold VOSENSE Rising 5.5 7.5 10 % ∆VFBL PGOOD Lower Threshold VOSENSE Falling –5.5 –7.5 –10 % ∆VFB(HYST) PGOOD Hysteresis VOSENSE Returning 2.5 % VPGL PGOOD Low Voltage IPGOOD = 2mA 0.1 0.3 V IPGOOD PGOOD Leakage Current VPGOOD = 5V ±1 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
The minimum on-time condition is specified for an inductor may cause permanent damage to the device. Exposure to any Absolute peak-to-peak ripple current ≥ 40% of IMAX (see minimum on-time Maximum Rating condition for extended periods may affect device considerations in the Applications Information section). reliability and lifetime.
Note 7:
The LTC3780 is tested under pulsed load conditions such that TJ ≈
Note 2:
TJ for the QFN package is calculated from the temperature TA and TA. The LTC3780E is guaranteed to meet specifications from 0°C to 85°C power dissipation PD according to the following formula: junction temperature. Specifications over the –40°C to 85°C operating TJ = TA + (PD • 34°C/W) junction temperature range are assured by design, characterization and
Note 3:
The IC is tested in a feedback loop that servos V correlation with statistical process controls. The LTC3780I is guaranteed ITH to a specified voltage and measures the resultant V over the –40°C to 125°C operating junction temperature range, and OSENSE. the LTC3780MP is tested and guaranteed over the full –55°C to 125°C
Note 4:
Dynamic supply current is higher due to the gate charge being operating junction temperature range. delivered at the switching frequency.
Note 8:
This parameter is guaranteed by design.
Note 5:
Rise and fall times are measured using 10% and 90% levels. Delay times are measured using 50% levels.
Note 9:
fOSC is the running frequency for the application. Rev G For more information www.analog.com 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Block Diagram Operation Applications Information Typical Application Related Parts 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 Typical Application Related Parts