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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LT3591 датащи(PDF) 2 Page - Linear Technology |
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LT3591 датащи(HTML) 2 Page - Linear Technology |
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2 / 16 page  LT3591 2 3591f PACKAGE/ORDER INFORMATION ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS Input Voltage (VIN)................................................... 12V CTRL Voltage ........................................................... 12V SW Voltage .............................................................. 45V CAP Voltage ............................................................. 45V LED Voltage ............................................................. 45V Operating Junction Temperature Range (Note 2) ...............................................– 40°C to 85°C Maximum Junction Temperature ........................ 125°C Storage Temperature Range...................– 65°C to 150°C (Note 1) Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. PARAMETER CONDITIONS MIN TYP MAX UNITS Minimum Operating Voltage 2.5 V LED Current Sense Voltage (VCAP – VLED)VCAP = 24V, ISW = 300mA ● 190 200 210 mV CAP Pin Bias Current VCAP = 36V, VLED = 35.8V 40 80 µA LED Pin Bias Current VCAP = 36V, VLED = 35.8V 20 40 µA Supply Current VCAP = 24V, VLED = 23V CTRL = 0V 4 9 5 11 mA µA Switching Frequency 0.75 1 1.2 MHz Maximum Duty Cycle 92 94 % Switch Current Limit ● 500 800 mA Switch VCESAT ISW = 300mA 200 mV Switch Leakage Current VSW = 24V 0.1 5 µA VCTRL for Full LED Current VCAP = 44V ● 1.5 V VCTRL to Shut Down IC 50 mV VCTRL to Turn On IC ● 100 mV CTRL Pin Bias Current 100 nA CAP Pin Overvoltage Protection ● 40 42 44 V Schottky Forward Drop ISCHOTTKY = 200mA 0.8 V Schottky Leakage Current VR = 30V 4 µA TOP VIEW 9 DDB PACKAGE 8-LEAD (3mm × 2mm) PLASTIC DFN 5 6 7 8 4 3 2 1 VIN GND NC SW CTRL LED NC CAP TJMAX = 125°C, θJA = 76°C/W EXPOSED PAD (PIN 9) SHOULD BE CONNECTED TO PCB GROUND ORDER PART NUMBER DDB PART MARKING LT3591EDDB LCPG Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges. The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3V, VCTRL = 3V, unless otherwise specified. Note 2: The LT3591E is guaranteed to meet performance specifications from 0°C to 85°C operating junction temperature range. Specifications over the –40°C to 85°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. |
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