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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTM8049 датащи(PDF) 3 Page - Linear Technology |
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LTM8049 датащи(HTML) 3 Page - Linear Technology |
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3 / 20 page  LTM4661 3 4661f For more information www.linear.com/LTM4661 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Switching Regulator Section: per Channel VIN Input DC Voltage VOUT ≥ 2.5V l 0.7 5.5 V VIN(MIN) Minimum Start-Up Voltage VOUT = 0V l 1.6 1.8 VOUT(RANGE) Output Voltage Range l 2.5 15 V VOUT(DC) Output Voltage, Total Variation with Line and Load RFB = 31.6k, SYNC/MODE = INTVCC VIN = 3.3V, VOUT = 5V, IOUT = 0A to 2A l 4.85 5 5.15 V IQ(VIN) Input Supply Bias Current VIN = 3.3V, VOUT = 5V, SYNC/MODE = INTVCC, IOUT = 5mA VIN = 3.3V, VOUT = 5V, SYNC/MODE = GND, IOUT = 5mA Shutdown, SDB = 0, VIN = 3.3V 10 8.5 0.5 mA mA µA IS(VIN) Input Supply Current VIN = 3.3V, VOUT = 5V, IOUT = 2A 3.7 A IOUT(DC) Output Continuous Current Range VIN = 3.3V, VOUT = 5V (Note 4) VIN = 3.3V, VOUT = 12V 0 0 2 0.7 A A ΔVOUT (Line)/VOUT Line Regulation Accuracy VOUT = 12V, VIN = 1.8V to 5.5V, IOUT = 0A l 0.1 0.5 %/V ΔVOUT (Load)/VOUT Load Regulation Accuracy VIN = 3.3V, VOUT = 5V, IOUT = 0A to 2A l 0.1 2 % VOUT(AC) Output Ripple Voltage IOUT = 0A, COUT = 2×22µF Ceramic VIN = 3.3V, VOUT = 5V 3 mV ΔVOUT(START) Turn-On Overshoot IOUT = 0A, COUT = 2×22µF Ceramic, VIN = 3.3V, VOUT = 5V 30 mV tSTART Turn-On Time COUT = 100µF Ceramic, No Load, VIN = 3.3V, VOUT = 5V 10 ms ΔVOUTLS Peak Deviation for Dynamic Load Load: 0% to 25% to 0% of Full Load COUT = 100µF Ceramic, VIN = 3.3V, VOUT = 5V 200 mV tSETTLE Settling Time for Dynamic Load Step Load: 0% to 25% to 0% of Full Load COUT = 100µF Ceramic, VIN = 3.3V, VOUT = 5V 500 uS VFB Voltage at VFB Pin IOUT = 0A, VIN = 3.3V, VOUT = 5V, SYNC/MODE = INTVCC l 1.17 1.2 1.23 V IFB Current at VFB Pin (Note 7) 1 50 nA RFBHI Resistor Between VOUT and VFB Pins 99.5 100 100.5 kΩ Duty(MIN) Minimum Duty Cycle FB = 1.4V (Note 7) 0 % Duty(MAX) Maximum Duty Cycle FB = 1.0V (Note 7) 90 94 % SDB Input Voltage SDB Input High SDB Input Low 1.2 0.35 V V ISDB SDB Input Current SDB = 5.5V 1 2 uA VINTVCC Internal VCC Voltage VIN < 2.8V, VOUT>5V 3.9 4.25 4.6 V fOSC Switching Frequency 1 MHz SYNC Range SYNC Frequency Range 0.5 1.5 MHz MODE/SYNC Sync Input High Voltage Sync Input Low Voltage 1.6 0.35 V V IMODE/SYNC SDB = 5.5V 1 2 uA The l denotes the specifications which apply over the specified internal operating temperature range, otherwise specifications are at TA = 25°C (Note 2), VIN = 3.3V, per the typical application. |
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