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UC3838A Datasheet(PDF) 3 Page - Texas Instruments |
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UC3838A Datasheet(HTML) 3 Page - Texas Instruments |
3 / 5 page 3 UC1838A UC2838A UC3838A ELECTRICAL CHARACTERISTICS: Unless otherwise stated, these specifications apply for TA = –55°C to +125°C for the UC1838A, –20°C to +85°C for the UC2838A, and 0°C to +70°C for the UC3838A, VCC = 20V, VM = 5V, TA =TJ. PARAMETER TEST CONDITIONS UC1838A / UC2838A UC3838A UNITS MIN TYP MAX MIN TYP MAX Reference Section Supply Current VCC =VM = 40V 4 8 4 8 mA Reference Output TA = 25°C 2.47 2.5 2.53 2.45 2.5 2.55 V Line Regulation VCC = 5 to 30V 1 5 1 10 mV Load Regulation IO = 0 to –2mA 5 20 5 20 mV Short Circuit Current VREF = 0V –30 –60 –30 –60 mA Temperature Stability* Over Operating Temp. Range 15 25 10 25 mV Amplifier Section (Each Amplifier) Offset Voltage VCM = 2.5V 5 10 mV Input Bias Current VIN = 0V –1 –1 µA Input Offset Current 100 100 nA Minimum Output Swing 0.4 18 0.4 18 V Output Sink Current VO = 5V 110 30110 30 mA Output Source Current VO = 0V –1 –10 –20 –1 –10 –20 mA AVOL VO = 1 to 11V 100 120 100 120 dB CMRR VIN = 1 to 11V 70 80 70 80 dB PSRR VCC = 10 to 20V 70 100 70 100 dB Gain Bandwidth* 0.6 0.8 0.6 0.8 MHz Reset Drive Section Input Leakage VDR = 40V 10 10 µA Output Leakage VR = –120V –100 –100 µA Input Current IR = –50mA –1 –2 –1 –2 mA Maximum Reset Current IDR = –3mA –100 –120 –200 –100 –120 –200 mA Transconductance IR = –10 to –50mA .03 .042 .055 .03 .042 .055 A/V * These parameters are guaranteed by design but not 100% tested in production. TYPICAL APPLICATION +12V, 4A output with switching frequency = 50 kHz. |
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