Datasheet LT8330 (Analog Devices) - 3

LT8330
e lecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, EN/UVLO = 12V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Voltage Range l 3 40 V VIN Quiescent Current at Shutdown VEN/UVLO = 0.2V 0.9 2 µA l 2 5 µA VEN/UVLO = 1.5V 2 5 µA l 3.6 9.5 µA VIN Quiescent Current Sleep Mode, Not Switching 5.5 10 µA l 8.5 15 µA Active Mode, Not Switching 780 1100 µA l 840 1200 µA
FBX Regulation
FBX Regulation Voltage FBX > 0V l 1.568 1.6 1.632 V FBX < 0V l –0.820 –0.80 –0.780 V FBX Line Regulation FBX > 0V, 3V < VIN < 40V 0.005 0.015 %/V FBX < 0V, 3V < VIN < 40V 0.005 0.015 %/V FBX Pin Current FBX = 1.6V, –0.8V l –10 10 nA
Oscillator
Switching Frequency (fOSC) VIN = 24V l 1.85 2.0 2.15 MHz Minimum On-Time VIN = 24V 65 105 ns Minimum Off-Time VIN = 24V 47 65 ns
Switch
Maximum Switch Current Limit Threshold l 1.0 1.2 1.4 A Switch RDS(ON) ISW = 0.5A 330 mΩ Switch Leakage Current VSW = 60V 0.1 1 µA
EN/UVLO Logic
EN/UVLO Pin Threshold (Rising) Start Switching l 1.620 1.68 1.745 V EN/UVLO Pin Threshold (Falling) Stop Switching l 1.556 1.60 1.644 V EN/UVLO Pin Current VEN/UVLO = 1.6V l –40 40 nA
Soft-Start
Soft-Start Time VIN = 24V 1 ms
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings LT8330I is guaranteed over the full –40°C to 125°C operating junction may cause permanent damage to the device. Exposure to any Absolute temperature range. The LT8330H is guaranteed over the full –40°C to Maximum Rating condition for extended periods may affect device 150°C operating junction temperature range. High junction temperatures reliability and lifetime. degrade operating lifetimes. Operating lifetime is derated at junction
Note 2:
INTV temperatures greater than 125°C. CC cannot be externally driven. No additional components or loading is allowed on this pin.
Note 4:
The IC includes overtemperature protection that is intended to
Note 3:
The LT8330E is guaranteed to meet performance specifications protect the device during overload conditions. Junction temperature will from 0°C to 125°C junction temperature. Specifications over the –40°C exceed 150°C when overtemperature protection is active. Continuous to 125°C operating junction temperature range are assured by design, operation above the specified maximum operating junction temperature characterization and correlation with statistical process controls. The will reduce lifetime. 8330fa For more information www.linear.com/LT8330 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 Typical Applications Package Description Revision History Typical Application Related Parts