Datasheet LT8310 (Analog Devices) - 5

LT8310
e lecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VIN = 24V, UVLO = 24V, OVLO = 0V, SYNC = 0V, SENSE = 0V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
SOUT-to-GATE Delay (tPRE) SOUT Falling to GATE Rising (Note 8) l 190 240 300 ns GATE-to-SOUT Delay (tPOST) GATE Falling to SOUT Rising (Note 8) l 0 12 25 ns
Soft-Start
SS Active Switching Level (GATE Switches) 0.95 1.00 1.05 V SS Frequency Foldback Complete fOSC within Specified Limits l 2.5 V SS Pin Current (Note 8) Soft-Up l –60 –50 –40 µA Slow Wake l –6 –5 –4 µA Hard-Down, VSS = 0.4V 6 mA SS Reset Threshold Voltage 0.27 V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 5:
The LT8310 includes overtemperature protection that is intended may cause permanent damage to the device. Exposure to any Absolute to protect the device during momentary overload conditions. Junction Maximum Rating condition for extended periods may affect device temperature will exceed the maximum operating junction temperature reliability and lifetime. when overtemperature protection is active. Continuous operation above
Note 2:
All voltages are relative to GND unless otherwise noted. All pin the specified maximum junction temperature may impair device reliability. currents are defined positive into the pin unless otherwise noted.
Note 6:
VSET = VINTVCC – VRDVIN.
Note 3:
Do not apply a positive or negative voltage or current source to the
Note 7:
Line regulation in duty mode control applications is constrained GATE or SOUT pins, otherwise permanent damage may occur. by the accuracy of the RDVIN pin input current, the duty mode control
Note 4:
The LT8310E is guaranteed to meet performance specifications gain, and the external set resistor, RSET. RSET should be specifiied to 1% from the 0°C to 125°C junction temperature. Specifications over the –40°C or better. to 125°C operating junction temperature range are assured by design,
Note 8:
See the Timing Diagrams section. characterization and correlation with statistical process controls. The LT8310I is guaranteed over the full −40°C to 125°C operating junction temperature range. The LT8310H is guaranteed over the full –40°C to 150°C operating junction temperature range. The LT8310MP is guaranteed over the full –55°C to 150°C operating junction temperature range. Operating lifetime is derated at junction temperatures greater than 125°C. 8310f For more information www.linear.com/LT8310 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Typical Application Related Parts