Datasheet LT8316 (Analog Devices) - 3

link to page 2 LT8316
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. BIAS = 30V, VEN/UVLO = 30V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
BIAS Chip Bias Voltage Supply Range After Startup 9.5 V IQ BIAS Quiescent Current Burst Mode Operation 75 150 μA Active 470 700 ICLAMP(MAX) BIAS Clamp Maximum Current 15 mA VCLAMP BIAS Clamping Voltage ICLAMP = 200µA 34 38 V ICLAMP = 15mA 35 39 V ISHDN VIN Shutdown Current VEN/UVLO < 0.3V, BIAS = Floating 12 20 μA VIN(MIN) Minimum Input Voltage for Startup BIAS = Floating l 16 V ISTARTUP Startup Current Out of INTVCC VIN = 16V, BIAS = Floating l 100 300 μA VUVLO EN/UVLO Threshold VEN/UVLO Falling 1.18 1.22 1.26 V EN/UVLO Hysteresis VEN/UVLO Rising 30 65 120 mV INTVCC UVLO Rising Threshold Startup Current through Depletion FET 11.1 12 13.1 V INTVCC UVLO Falling Threshold 7.6 8.1 8.6 V INTVCC Regulation Voltage Drawing 20mA from INTVCC 9.5 10 10.5 V INTVCC LDO Dropout Voltage Drawing 20mA from INTVCC 1 V Gate Driver Rise Time CGATE = 3.3nF, 10% to 90% 30 ns Gate Driver Fall Time CGATE = 3.3nF, 90% to 10% 8 ns VREG FB Regulation Voltage l 1.18 1.22 1.25 V GM Voltage Error Amplifier Transconductance VFB = 1.22V ± 5mV 245 350 455 μS VTC TC Voltage TA = 25°C 1.22 V TC Voltage Temperature Coefficient +4.1 mV/°C ITC TC Sinking/Sourcing Current ±100 μA IIREG/SS IREG/SS Current Current Out-of-Pin 9.7 10 10.3 μA IDCM Flyback Collapse Detection Threshold IDCM Rising −170 μA Resonant Valley Detection Threshold IDCM Falling −85 μA VSENSE(MIN) Minimum Current Voltage Threshold 14 20 26 mV VSENSE(MAX) Maximum Current Voltage Threshold 90 100 110 mV SENSE Input Bias Current Current Out-of-Pin 35 µA FSW(MIN) Minimum Switching Frequency Burst Mode 3 3.5 4 kHz Standby Mode 187 220 250 Hz FSW(MAX) Maximum Switching Frequency 138 140 142 kHz
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 2:
The LT8316E is guaranteed to meet performance specifications may cause permanent damage to the device. Exposure to any Absolute from 0°C to 125°C junction temperature. Specifications over the −40°C Maximum Rating condition for extended periods may affect device to 125°C operating junction temperature range are assured by design reliability and lifetime. characterization and correlation with statistical process controls. The LT8316I is guaranteed over the full −40°C to 125°C operating junction temperature range. High junction temperatures degrade operating lifetimes. Operating lifetime is derated at junction temperatures greater than 125°C. Rev. 0 For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Application Related Parts