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UCC3882 Datasheet(PDF) 3 Page - Texas Instruments |
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UCC3882 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 14 page  3 UCC2882/-1 UCC3882/-1 ELECTRICAL CHARACTERISTICS: Unless otherwise specified, VIN = VDRVHI = VDRVLO = 12V, VSNS = 3.5V, VD0 = VD1 = VD2 = VD3 = VD4 = 0V, RT = 13k, CT = 1.8nF, EN = Open, 0°C < TA < 70°C, TA =TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS DAC/Reference COMMAND Voltage Accuracy 10.8V < VIN < 13.2V, IREF = 0mA (Note 1) –1 1 % D0-D4 Voltage High DX Pin Floating 5 5.2 V D0-D4 Input Bias Current DX Pin Tied to GND –120 –70 –20 µA OVP Comparator Trip Point % Over COMMAND Voltage (Note 2) 10 17 25 % Hysteresis 20 mV OV Comparator Trip Point % Over COMMAND Voltage (Note 2) 5 9 12 % Hysteresis 20 mV PWRGD On Resistance 470 Ω UV Comparator Trip Point % Over COMMAND Voltage (Note 2) –12 –9 –5 % Hysteresis 20 mV Enable Pin Pull Up Current VEN = 2.5V –80 –50 –20 µA Voltage Error Amplifier Input Offset Voltage VCM = 3V –10 0 10 mV Input Bias Current VCM = 3V –0.5 0.5 µA Open Loop Gain 2.05V < VCOMP < 3.05V 90 dB Power Supply Rejection Ratio 10.8V < VIN < 15V 85 dB Output Sourcing Current VVFB = 2V, VCOMMAND = VCOMP = 2.5V –1.6 –0.8 mA Output Sinking Current VVFB = 3V, VCOMMAND = VCOMP = 2.5V 1 mA Current Sense Amplifier Gain 15 16 17 V/V Common Mode Rejection Ratio 0V < VCM < 4.5V 60 dB Power Supply Rejection Ratio 10.8V < VIN < 15V 80 dB Output Sourcing Current VIS– = 2V, VISOUT = VIS+ = 2.5V –4 –3 mA Output Sinking Current VIS– = 3V, VISOUT = VIS+ = 2.5V 3 4 mA Current Amplifier Input Offset Voltage VCM = 3V 1 mV Input Bias Current VCM = 3V –0.1 µA Open Loop Gain 1V < VCAO < 2.5V 90 dB Output Voltage High 3V Power Supply Rejection Ratio 10.8V < VIN < 15V 80 dB Output Sourcing Current VCAM = 2V, VCAO = VCOMP = 2.5V –7 mA Output Sinking Current VCAM = 3V, VCAO = VCOMP = 2.5V 17 mA Oscillator Initial Accuracy TA = 25°C 324 360 396 kHz 0°C < TA < 70°C 300 360 420 kHz Valley to Peak Voltage 1.67 V Frequency Change With Voltage 10.8V < VIN < 15V 1 % Output Section (GATEHI and GATELO) Output Low Voltage IGATE = –100mA 0.2 V Output High Voltage IGATE = 100mA 11.8 V Rise Time CGATE = 3.3nF, RSERIES = 10 Ω 20 80 ns Fall Time CGATE = 3.3nF, RSERIES = 10 Ω 15 80 ns |
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