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UC1572 Scheda tecnica(PDF) 2 Page - Texas Instruments |
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UC1572 Scheda tecnica(HTML) 2 Page - Texas Instruments |
2 / 9 page 2 UC1572 UC2572 UC3572 ABSOLUTE MAXIMUM RATINGS VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V EAINV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to VCC IEAOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA RAMP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 4V CS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to VCC Iout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.7A to 0.7A I3VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -15mA Storage Temperature . . . . . . . . . . . . . . . . . . . -65°C to +150°C Junction Temperature . . . . . . . . . . . . . . . . . . . -65°C to +150°C Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300°C Currents are positive into, negative out of the specified terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages. DIL-8, SOIC-8 (TOP VIEW) D, N or J Packages CONNECTION DIAGRAM TEMPERATURE RANGE PACKAGE UC1572 –55°C to +125°C J UC2572 –40°C to +85°C D, N or J UC3572 0°C to +70°C D or N ORDERING INFORMATION ELECTRICAL CHARACTERISTICS: Unless otherwise specified, VCC = 5V, CT = 680pF, TA =TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Reference Section 3VREF 2.94 3 3.06 V Line Regulation VCC = 4.75 to 30V 1 10 mV Load Regulation I3VREF = 0V to –5mA 1 10 mV Oscillator Section Frequency VCC = 5V to 30V 85 100 115 kHz Error Amp Section EAINV EAOUT = 2V –10 0 10 mV IEANV = –1mA –0.2 –0.9 V IEAINV EAOUT = 2V –0.2 –1.0 A AVOL EAOUT = 0.5V to 3V 65 90 dB EAOUT High EAINV = –100mV 3.6 4 4.4 V EAOUT Low EAINV = 100mV 0.1 0.2 V IEAOUT EAINV = –100mV, EAOUT = 2V –350 –500 µA EAINV = 100mV, EAOUT = 2V 7 20 mA Unity Gain Bandwidth TJ = 25°C, F = 10kHz 0.6 1 MHz Current Sense Comparator Section Threshold 0.185 0.205 0.225 V Input Bias Current CS = 0 –0.4 –1 µA CS Propogation Delay 300 nS |
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