Datasheet LTC7149 (Analog Devices) - 4

LTC7149 ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
tPGOOD PGOOD Delay PGOOD Low to High 16 Switch PGOOD High to Low 64 Cycles Switch Cycles VVINREG Input Voltage Regulation Voltage (VINREG + |VOUT –|) l 1.85 2 2.15 V IVINREG VINREG Leakage Current 0 100 nA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings 125°C operating junction temperature range are assured by design, may cause permanent damage to the device. Exposure to any Absolute characterization and correlation with statistical process controls. The Maximum Rating condition for extended periods may affect device LTC7149I is guaranteed over the full –40°C to 125°C operating junction reliability and lifetime. temperature range. Note that the maximum ambient temperature
Note 2:
Transient absolute maximum voltages should not be applied for consistent with these specifications is determined by specific operating more than 4% of the switching duty cycle. conditions in conjunction with board layout, the rated package thermal
Note 3:
Minimum On-time considerations need to be taken into account impedance and other environmental factors. when regulating to an output voltage close to zero. Refer to minimum on-
Note 5:
The quiescent current in FC mode does not include switching loss time section in Operations for more details. of the power FETs.
Note 4:
The LTC7149 is tested under pulsed load conditions such
Note 6:
This IC includes overtemperature protection that is intended that TJ ≈ TA. The LTC7149E is guaranteed to meet specifications from to protect the device during momentary overload conditions. Junction 0°C to 85°C junction temperature. Specifications over the –40°C to temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. 7149fa 4 For more information www.linear.com/LTC7149