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LT1614 Datasheet(PDF) 2 Page - Linear Technology |
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LT1614 Datasheet(HTML) 2 Page - Linear Technology |
2 / 16 page 2 LT1614 A G A U A R BSOLUTEXI TI S VIN, SHDN, LBO Voltage ......................................... 12V SW Voltage ............................................... – 0.4V to 30V NFB Voltage ............................................................ – 3V VC Voltage ................................................................ 2V LBI Voltage ............................................ 0V ≤ VLBI ≤ 1V Current into FB Pin .............................................. ±1mA Junction Temperature ........................................... 125 °C Operating Temperature Range LT1614C ................................................. 0 °C to 70°C LT1614I ............................................. – 40 °C to 85°C Extended Commercial Temperature Range (Note 2) .................. – 40 °C to 85°C Storage Temperature Range ................ – 65 °C to 150°C Lead Temperature (Soldering, 10 sec)................. 300 °C ELECTRICAL C C HARA TERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS Quiescent Current 12 mA VSHDN = 0V 5 10 µA Feedback Voltage q – 1.21 – 1.24 – 1.27 V NFB Pin Bias Current (Note 3) VNFB = –1.24V q – 2.5 – 4.5 – 7 µA Reference Line Regulation 1V ≤ VIN ≤ 2V 0.6 1.1 %/V 2V ≤ VIN ≤ 6V 0.3 0.8 %/V Minimum Input Voltage 0.92 1 V Maximum Input Voltage q 6V Error Amp Transconductance ∆I = 5µA16 µmhos Error Amp Voltage Gain 100 V/V Switching Frequency q 500 600 750 kHz Maximum Duty Cycle 73 80 % q 70 80 % Switch Current Limit (Note 4) 0.75 1.2 A PACKAGE/ORDER I FOR ATIO TJMAX = 125°C, θJA = 160°C/W Consult factory for Military grade parts. ORDER PART NUMBER LT1614CS8 LT1614IS8 S8 PART MARKING 1614 1614I ORDER PART NUMBER LT1614CMS8 LT1614IMS8 MS8 PART MARKING LTID LTJB 1 2 3 4 NFB VC SHDN GND 8 7 6 5 LBO LBI VIN SW TOP VIEW MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 125°C, θJA = 120°C/W 1 2 3 4 8 7 6 5 TOP VIEW LBO LBI VIN SW NFB VC SHDN GND S8 PACKAGE 8-LEAD PLASTIC SO The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Commercial Grade 0°C to 70°C. VIN = 1.5V, VSHDN = VIN unless otherwise noted. (Note 1) |
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