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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC7803 датащи(PDF) 4 Page - Analog Devices |
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LTC7803 датащи(HTML) 4 Page - Analog Devices |
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4 / 42 page  LTC7811 4 Rev. 0 For more information www.analog.com ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Input Supply (VBIAS, VIN) VBIAS Bias Input Supply Operating Voltage Range 4.5 40 V VIN Boost Converter Input Supply Operating Range VBIAS ≥ 4.5V 1 40 V IQ VIN Current in Regulation Front Page Circuit, 14V to 3.3V, No Load, RUN2,3 = 0V 14 µA Controller Operation VOUT1,2 Buck Output Voltage Operating Range 0.8 40 V VOUT3 Boost Output Voltage Operating Range 40 V VFB1,2 Buck Regulated Feedback Voltage (Note 4) VBIAS = 4.5V to 40V, ITH1,2 Voltage = 0.6V to 1.2V 0ºC to 85ºC, All Grades l 0.788 0.792 0.800 0.800 0.812 0.808 V V VFB3 Boost Regulated Feedback Voltage (Note 4) VBIAS = 4.5V to 40V, ITH3 Voltage = 0.6V to 1.2V, VPRG3 = FLOAT VPRG3 = 0V VPRG3 = INTVCC l l l 1.177 7.81 9.28 1.195 8.00 9.50 1.213 8.13 9.66 V V V Buck Feedback Current ±5 ±50 nA Boost Feedback Current VPRG3 = FLOAT RUN3 = 0V, VPRG3 = 0V or INTVCC RUN3 = 2V, VPRG3 = 0V or INTVCC ±5 ±5 1 ±50 ±50 nA nA µA Buck Feedback Overvoltage Protection Threshold Measured at VFB1,2 Relative to Regulated VFB1,2 7 10 13 % gm1,2,3 Transconductance Amplifier gm (Note 4) ITH1,2,3 = 1.2V, Sink/Source = 5μA 1.8 mmho VSENSE(MAX) Maximum Current Sense Threshold VFB1,2 = 0.7V, VSENSE1,2– = 3.3V VFB3 = 1.1V, VSENSE3+ = 12V l 45 50 55 mV Matching for Channels 1& 2 VSENSE1,2– = 3.3V, VFB2 = INTVCC –3.5 0 3.5 mV ISENSE1,2+ SENSE1,2+ Pin Current VSENSE1,2+ = 3.3V ±1 µA ISENSE3– SENSE3– Pin Current VSENSE3– = 12V ±1 µA ISENSE1– SENSE1– Pin Current VSENSE1– ≤ 2.7V 3.2V ≤ VSENSE1– < INTVCC – 0.5V VSENSE1– > INTVCC + 0.5V 2 40 660 µA µA µA ISENSE2– SENSE2– Pin Current VSENSE2– = 3.3V VSENSE2– > INTVCC + 0.5V 620 ±2 µA µA ISENSE3+ SENSE3+ Pin Current VSENSE3+ = 3.3V VSENSE3+ > INTVCC + 0.5V 660 ±2 µA µA Soft-Start Charge Current VTRACK/SS1,2 = 0V, VSS3 = 0V 10 12.5 15 µA RUN Pin ON Threshold VRUN1,2,3 Rising l 1.15 1.20 1.25 V RUN Pin Hysteresis VRUN1,2,3 Falling 100 mV DC Supply Current (Note 5) VBIAS Shutdown Current RUN1, 2, 3 = 0V 1.5 µA VBIAS Sleep Mode Current VSENSE1– < 3.2V, EXTVCC = 0V One Channel On All Channels On 15 18 24 30 µA µA The l indicates specifications which apply over the specified operating junction temperature range, otherwise specifications are for TA = 25°C, VBIAS = 12V, RUN1,2,3>1.25V, EXTVCC = 0V, VPRG3 = FLOAT unless otherwise noted. (Note 2) |
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