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LT8350RVPBF датащи(PDF) 3 Page - Analog Devices |
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LT8350RVPBF датащи(HTML) 3 Page - Analog Devices |
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3 / 24 page ![]() LT8350 3 Rev. 0 For more information www.analog.com ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS Input and Output VIN Operating Voltage Range l 3 40 V VIN Shutdown Current VEN/UVLO = 0.3V 2 5 µA VIN Active Current (Not Switching) VEN/UVLO = 1.5V, EXTVCC = 0V VEN/UVLO = 1.5V, EXTVCC = 5V 3.5 400 5 650 mA µA EXTVCC Voltage Range l 1 18 V VOUT Voltage Range l 0 18 V EN/UVLO Shutdown Threshold Falling 0.3 0.6 0.9 V EN/UVLO Enable Threshold Falling l 1.196 1.220 1.244 V EN/UVLO Enable Hysteresis 15 mV EN/UVLO Hysteresis Current VEN/UVLO = 1.1V VEN/UVLO = 1.5V 2.1 –0.1 2.5 0 2.9 0.1 µA µA Linear Regulators INTVCC Regulation Voltage IINTVCC = 20mA 3.4 3.6 3.8 V VREF Regulation Voltage IVREF = 100µA l 1.97 2.00 2.03 V Current Regulation Loop Full-Scale Current Regulation V(ISP-ISN) VCTRL = 2V, VISP = 12V VCTRL = 2V, VISP = 0V l l 94 94 100 100 103 103 mV mV ISP/ISN Input Common Mode Range l 0 40 V ISP/ISN Current Regulation Amplifier gm 2300 µS Voltage Regulation Loop FB Pin Current FB in Regulation, Current Out of Pin 35 80 nA FB Regulation Voltage VC = 0.8V l 0.985 1.00 1.015 V FB Line Regulation VIN = 3V to 40V 0.02 0.2 % FB Load Regulation 0.02 0.1 % FB Voltage Regulation Amplifier gm 580 µS VC Output Impedance 10 MΩ Power Switches Maximum Switch Current Limit Peak-Boost Current Mode Peak-Buck Current Mode 6.3 5.8 7.0 7.0 7.7 8.0 A A Switch A On-Resistance (From VIN to SW1) ISW = 1A 50 mΩ Switch B On-Resistance (From SW1 to GND) ISW = 1A 50 mΩ Switch C On-Resistance (From SW2 to GND) ISW = 1A 30 mΩ Switch D On-Resistance (From VOUT to SW2) ISW = 1A 30 mΩ Oscillator Switching Frequency VSYNC/MODE = 0V, RT = 14.3kΩ VSYNC/MODE = 0V, RT = 178kΩ l 1900 260 2000 290 2100 320 kHz kHz SYNC Frequency 200 2000 kHz SYNC/MODE Threshold Voltage 0.4 1.5 V Spread Spectrum Above Oscillator Frequency VSYNC/MODE = 3.6V 20 23 26 % The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VEN/UVLO = 1.5V, unless otherwise noted. |
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