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KA3842AC 데이터시트(PDF) 3 Page - Fairchild Semiconductor |
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KA3842AC 데이터시트(HTML) 3 Page - Fairchild Semiconductor |
3 / 6 page 3 www.fairchildsemi.com KA3842AC/KA3842AE Rev. 1.0.1 Absolute Maximum Ratings The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Symbol Parameter Value Unit VCC Supply Voltage 30 V IO Output Current ±1 A VI(ANA) Analog Inputs (Pins 2, 3) -0.3 to 6.3 V ISINK(EA) Error Amp. Output Sink Current 10 mA PD Power Dissipation 1 W R θja Thermal Resistance, Junction-to-Air(4) 95 °C/W Electrical Characteristics (VCC = 15V, RT = 10k¾, CT = 3.3nF, TA = 0°C to +70°C, unless otherwise specified) Symbol Parameter Conditions Min. Typ. Max. Unit REFERENCE SECTION VREF Output Voltage TJ = 25°C, IO = 1mA 4.9 5.0 5.1 V ΔVREF Line Regulation VCC = 12V to 25V – 6 20 mV Load Regulation IO = 1mA to 20mA – 6 25 mV ISC Output Short Circuit TA = 25°C – -100 -180 mA OSILLATOR SECTION FOSC Initial Accuracy TJ = 25°C 47 52 57 kHz STV Voltage Stability VCC = 12V to 25V – 0.2 1 % VOSC Amplitude VPIN4, Peak to Peak – 1.7 – V IDISCHG Discharge Current TJ = 25°C, Pin 4 = 2V 7.8 8.3 8.8 mA CURRENT SENSE SECTION GV Gain(2)(3) 2.85 3 3.15 V/V VI(MAX) Maximum Input Signal(2) VPIN1 = 5V 0.9 1.0 1.1 V PSRR PSRR(1)(2) VCC = 12V to 25V – 70 – dB IBIAS Input Bias Current – -2 -10 µA TD Delay to Output(1) VPIN3 = 0 V to 2V – 100 200 ns ERROR AMPLIFIER SECTION VI Input Voltage TPIN1 = 2.5V 2.42 2.50 2.58 V IBIAS Input Bias Current – -0.3 -2 µA GVO Open Loop Gain(1) VO = 2V to 4V 65 90 – dB GBW Unity Gain Bandwidth(1) TJ = 25°C 0.7 1 – MHz PSRR PSRR(1) VCC = 12V to 25V 60 70 – dB ISINK Output Sink Current VPIN2 = 2.7V VPIN1 = 1.1V 2 6 – mA ISOURCE Output Source Current VPIN2 = 2.3V VPIN1 = 5.0V -0.5 -0.8 – mA VOH Output High Voltage VPIN2 = 2.3V, R1 = 15k¾ to GND 5 6 – V VOL Output Low Voltage VPIN2 = 2.7V R1 = 15k¾ to Pin 8 – 0.8 1.1 V |
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