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LT1683 Datasheet(PDF) 2 Page - Linear Technology |
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LT1683 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 24 page  2 LT1683 1683f (Note 1) Supply Voltage (VIN) ................................................ 20V Gate Drive Current ..................................... Internal Limit V5 Current ................................................. Internal Limit SHDN Pin Voltage .................................................... 20V Feedback Pin Voltage (Trans. 10ms) ...................... ±10V Feedback Pin Current ............................................ 10mA Negative Feedback Pin Voltage (Trans. 10ms) ........ ±10V CS Pin .......................................................................... 5V GCL Pin ..................................................................... 16V SS Pin .......................................................................... 3V Operating Junction Temperature Range (Note 3) ............................................ – 40 °C to 125°C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C ORDER PART NUMBER LT1683EG LT1683IG Consult LTC Marketing for parts specified with wider operating temperature ranges. TJMAX = 150°C, θJA = 110°C/ W ELECTRICAL CHARACTERISTICS ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VC = 0.9V, VFB = VREF, RVSL, RCSL = 16.9k, RT = 16.9k and other pins open unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Error Amplifiers VREF Reference Voltage Measured at Feedback Pin q 1.235 1.250 1.265 V IFB Feedback Input Current VFB = VREF q 250 1000 nA FBREG Reference Voltage Line Regulation 2.7V ≤ VIN ≤ 20V q 0.012 0.03 %/V VNFR Negative Feedback Reference Voltage Measured at Negative Feedback Pin q – 2.56 – 2.500 – 2.45 V with Feedback Pin Open INFR Negative Feedback Input Current VNFB = VNFR –37 – 25 µA NFBREG Negative Feedback Reference Voltage Line Regulation 2.7V ≤ VIN ≤ 20V q 0.009 0.03 %/V gm Error Amplifier Transconductance ∆IC = ±50µA 1100 1500 2200 µmho q 700 2500 µmho IESK Error Amp Sink Current VFB = VREF + 150mV, VC = 0.9V q 120 200 350 µA IESRC Error Amp Source Current VFB = VREF – 150mV, VC = 0.9V q 120 200 350 µA VCLH Error Amp Clamp Voltage High Clamp, VFB = 1V 1.27 V VCLL Error Amp Clamp Voltage Low Clamp, VFB = 1.5V 0.12 V AV Error Amplifier Voltage Gain 180 250 V/V FBOV FB Overvoltage Shutdown Outputs Drivers Disabled 1.47 V ISS Soft-Start Charge Current VSS = 1V 9.0 12 µA 1 2 3 4 5 6 7 8 9 10 TOP VIEW G PACKAGE 20-LEAD PLASTIC SSOP 20 19 18 17 16 15 14 13 12 11 GATE A CAP A GCL CS V5 SYNC CT RT FB NFB PGND GATE B CAP B VIN RVSL RCSL SHDN SS VC GND |
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