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LTC1698IS Datasheet(PDF) 2 Page - Linear Technology |
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LTC1698IS Datasheet(HTML) 2 Page - Linear Technology |
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2 / 24 page  2 LTC1698 1698f (Note 1) VDD, PWRGD ....................................................... 13.2V Input Voltage MARGIN, VFB, OVPIN, ISNSGND, ISNS ... –0.3V to 5.3V SYNC ..................................................... – 14V to 14V Output Voltage VCOMP, ICOMP (Note 2)......................... –0.3V to 5.3V Power Dissipation .............................................. 500mW Operating Temperature Range LTC1698E (Note 3) ............................ – 40 °C to 85°C LTC1698I ........................................... – 40 °C to 85°C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION ORDER PART NUMBER LTC1698EGN LTC1698ES LTC1698IGN LTC1698IS TJMAX = 125°C, θJA = 130°C/W (GN) TJMAX = 125°C, θJA = 110°C/W (SO) GN PACKAGE 16-LEAD PLASTIC SSOP S PACKAGE 16-LEAD PLASTIC SO 1 2 3 4 5 6 7 8 TOP VIEW 16 15 14 13 12 11 10 9 VDD CG PGND GND OPTODRV VCOMP MARGIN VFB FG SYNC VAUX ICOMP ISNS ISNSGND PWRGD OVPIN The q indicates specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VDD = 8V, unless otherwise noted. (Note 4) ELECTRICAL CHARACTERISTICS Consult LTC Marketing for parts specified with wider operating temperature ranges. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VDD Supply Voltage q 6 8 12.6 V VUVLO Undervoltage Lockout 4V IVDD VDD Supply Current VFB, OVPIN, VISNS, VISNSGND = 0V, CFG = CCG = 1000pF, CVAUX = 0.1µF, VSYNC = 0V q 1.8 4 mA fSYNC = 100kHz (Note 5) 5.0 mA MARGIN and Error Amplifier VFB Feedback Voltage MARGIN = Open, VCOMP = 1V (Note 7) 1.223 1.233 1.243 V q 1.215 1.233 1.251 V IVFB Feedback Input Current VFB = 1.233V q 0.05 1 µA VMARGIN MARGIN Voltage MARGIN = Open 1.65 V RMARGIN MARGIN Input Resistance 16.5 k Ω ∆VFB Feedback Voltage Adjustment VMARGIN = 3.3V q 456 % VMARGIN = 0V q –6 –5 –4 % GERR Error Amplifier Open-Loop DC Gain VCOMP = 0.8V to 1.2V, Load = 2kΩ, 100pF q 65 90 dB BWERR Error Amplifier Unity-Gain Bandwidth No Load (Note 6) 2 MHz VCLAMP Error Amplifier Output Clamp Voltage VFB = 0V 2 V IVCOMP Error Amplifier Source Current VFB = 0V q –25 – 10 mA Error Amplifier Sink Current VFB = 5V, VCOMP = 1.233V q 37 mA OPTODRV GOPTO Opto Driver DC Gain OVPIN, VISNS, VISNSGND = 0V q 4.75 5 5.25 V/V BWOPTO Opto Driver Unity-Gain Bandwidth No Load (Note 6) 1 MHz VOPTOHIGH Opto Driver Output High Voltage VFB, OVPIN, VISNSGND = 0V, VISNS = – 50mV, IOPTODRV = –10mA q 45 V IOPTOSC Opto Driver Output Short-Circuit Current OVPIN, VISNSGND, VISNS = 0V, VFB = 1.233V q –50 – 25 –10 mA GN PART MARKING 1698 1698I |
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