LT1616 WWWUUWUABSOLUTE AXI U RATI GSPACKAGE/ORDER I FOR ATIO(Note 1) Input Voltage (VIN) ... 25V ORDER PART BOOST Pin Voltage ... 35V NUMBER BOOST Pin Above SW Pin .. 25V TOP VIEW SHDN Pin ... 25V BOOST 1 6 SW LT1616ES6 FB Voltage .. 6V GND 2 5 VIN Current Into FB Pin ... ±1mA FB 3 4 SHDN Operating Temperature Range (Note 2) .. – 40°C to 85°C S6 PACKAGE S6 PART MARKING 6-LEAD PLASTIC SOT-23 Maximum Junction Temperature .. 125°C T LTNB JMAX = 125°C, θJA = 250°C/ W Storage Temperature Range ... – 65°C to 150°C Lead Temperature (Soldering, 10 sec).. 300°C Consult factory for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICSThe ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25 ° C. VIN = 10V, VBOOST = 15V, unless otherwise noted. (Note 2)PARAMETERCONDITIONSMINTYPMAXUNITS Undervoltage Lockout 3.35 3.6 V Feedback Voltage ● 1.225 1.25 1.275 V FB Pin Bias Current VFB = Measured VREF + 10mV ● 150 600 nA Quiescent Current Not Switching 1.9 2.5 mA Quiescent Current in Shutdown VSHDN = 0V 0.01 2 µA Reference Line Regulation VIN = 5V to 25V 0.005 %/V Switching Frequency VFB = 1.1V ● 1 1.4 1.8 MHz Frequency Shift Threshold on FB Pin fSW = 700kHz 0.44 V Maximum Duty Cycle ● 80 87 % Switch Current Limit (Note 3) 630 850 mA Switch VCESAT ISW = 300mA 220 350 mV Switch Leakage Current 10 µA Minimum Boost Voltage Above Switch ISW = 300mA 1.6 2.5 V BOOST Pin Current ISW = 300mA 7 12 mA SHDN Input Voltage High 1.8 V SHDN Input Voltage Low 0.4 V SHDN Bias Current VSHDN = 3V 8 15 µA VSHDN = 0V 0.01 0.1 µA Note 1: Absolute Maximum Ratings are those values beyond which the life Note 3: Current limit guaranteed by design and/or correlation to static test. of the device may be impaired. Slope compensation reduces current limit at higher duty cycle. Note 2: The LT1616E is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. 2
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