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UC1965J Datasheet(PDF) 3 Page - Texas Instruments |
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UC1965J Datasheet(HTML) 3 Page - Texas Instruments |
3 / 6 page 3 UC1965 UC2965 UC3965 ELECTRICAL CHARACTERISTICS Unless otherwise specified, VCC = 5V, TA =TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Error Amplifier Section (cont.) Output Low Level IOUT = 0 µA 0.8 V IOUT = 100 µA 1.2 V Output High Level IOUT = 0 µA4 V IOUT = –500 µA4 V Short Circuit Circuit VCOMP = 0V 8 mA CMRR VCM = 1.25V to 3.75V 70 100 dB PSRR VCC = 4.3V to 20V 70 100 dB Rising Slew Rate 2V/ µs Falling Slew Rate 0.4 V/ µs Inverting Buffer Amplifier Input Bias VCM = 2.5V 1 2 µA Output Offset Voltage VCM = 2.5V –20 0 20 mV Gain Bandwidth Product VIN = 50mV P-P (Note 1) 1.5 MHz Closed Loop Gain Inverting Gain –2.04 –2 –1.96 V/V Output Low Level IOUT = 0 µA 0.3 V IOUT = 100 µA 0.5 V Output High Level IOUT = 0mA 4 V IOUT = –4mA 4 V Short Circuit Circuit VOUT = 0V 18 mA CMRR VCM = 1.25V to 3.75V 70 100 dB PSRR VCC = 4.3V to 20V 70 100 dB Rising Slew Rate 0.9 V/ µs Falling Slew Rate 0.9 V/ µs Note 1: Guaranteed by design. Not 100% tested in production. PIN DESCRIPTIONS COMP: The output of the error amplifier and the input to the inverting terminal of the internal output buffer. This pin is available to compensate the high frequency gain of the error amplifier. GND: The reference and power ground for the device. NI: The non-inverting input to the error amplifier. OFFSET: The non-inverting input to the internal output buffer. VCC: The power input to the device. The minimum to maximum operating voltage is 4.3V to 20V. VFB: The inverting terminal of the error amplifier used as both the voltage sense input to the error amplifier and its other compensation point. VOUT: The emitter of the output transistor. This pin is the output of the inverting buffer. This pin has the capa- bility to drive an optocoupler or a PWM controller directly. VREF: The output of the trimmed precision reference. This reference maintains within 1% of its initial value over its entire line, load, and temperature range. |
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