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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC1436A датащи(PDF) 3 Page - Linear Technology |
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LTC1436A датащи(HTML) 3 Page - Linear Technology |
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3 / 28 page  3 LTC1436A LTC1436A-PLL/LTC1437A ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 15V, VRUN/SS = 5V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VLINEREG Reference Voltage Line Regulation VIN = 3.6V to 20V (Note 2), VPROG Pin Open 0.002 0.01 %/V VLOADREG Output Voltage Load Regulation ITH Sinking 5µA (Note 2) q 0.5 0.8 % ITH Sourcing 5µA (Note 2) q – 0.5 – 0.8 % VSFB Secondary Feedback Threshold VSFB Ramping Negative q 1.16 1.19 1.22 V ISFB Secondary Feedback Current VSFB = 1.5V – 1 – 2 µA VOVL Output Overvoltage Lockout VPROG Pin Open 1.24 1.28 1.32 V IPROG VPROG Input Current 0.5V > VPROG –3 – 6 µA INTVCC – 0.5V < VPROG < INTVCC 3 6 µA IQ Input DC Supply Current EXTVCC = 5V (Note 3) Normal Mode 3.6V < VIN < 30V, VAUXON = 0V 280 µA Shutdown VRUN/SS = 0V, 3.6V < VIN < 15V 16 25 µA VRUN/SS RUN Pin Threshold q 0.8 1.3 2 V IRUN/SS Soft Start Current Source VRUN/SS = 0V 1.5 3 4.5 µA ∆VSENSE(MAX) Maximum Current Sense Threshold VOSENSE = 0V, 5V, VPROG Pin Open 130 150 180 mV tON(MIN) Minimum On-Time Tested with Square Wave, SENSE – = 1.6V, 250 300 ns ∆VSENSE = 20mV (Note 6) TGL Transition Time TGL tr Rise Time CLOAD = 3000pF 50 150 ns TGL tf Fall Time CLOAD = 3000pF 50 150 ns TGS Transition Time TGS tr Rise Time CLOAD = 500pF 90 200 ns TGS tf Fall Time CLOAD = 500pF 50 150 ns BG Transition Time BG tr Rise Time CLOAD = 3000pF 50 150 ns BG tf Fall Time CLOAD = 3000pF 40 150 ns Internal VCC Regulator VINTVCC Internal VCC Voltage 6V < VIN < 30V, VEXTVCC = 4V q 4.8 5.0 5.2 V VLDO INT INTVCC Load Regulation IINTVCC = 15mA, VEXTVCC = 4V – 0.2 – 1 % VLDO EXT EXTVCC Voltage Drop IINTVCC = 15mA, VEXTVCC = 5V 130 230 mV VEXTVCC EXTVCC Switchover Voltage IINTVCC = 15mA, VEXTVCC Ramping Positive q 4.5 4.7 V Oscillator and Phase-Locked Loop fOSC Oscillator Frequency COSC = 100pF, LTC1436 (Note 4), 112 125 138 kHz LTC1436A-PLL/LTC1437A, VPLLLPF = 0V VCO High LTC1436A-PLL/LTC1437A, VPLLLPF = 2.4V 200 240 kHz RPLLIN PLL IN Input Resistance 50 k Ω IPLLLPF Phase Detector Output Current Sinking Capability fPLLIN < fOSC 10 15 20 µA Sourcing Capability fPLLIN > fOSC 10 15 20 µA Power-On Reset VSATPOR POR Saturation Voltage IPOR = 1.6mA, VOSENSE = 1V, VPROG Pin Open 0.6 1 V ILPOR POR Leakage VPOR = 12V, VOSENSE = 1.2V, VPROG Pin Open 0.2 1 µA VTHPOR POR Trip Voltage VPROG Pin Open, VOSENSE Ramping Negative – 11 – 7.5 – 4 % tDPOR POR Delay VPROG Pin Open 65536 Cycles |
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