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UC3578DP Folha de dados(PDF) 2 Page - Texas Instruments |
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UC3578DP Folha de dados(HTML) 2 Page - Texas Instruments |
2 / 11 page 2 UC2578 UC3578 ELECTRICAL CHARACTERISTICS: Unless otherwise specified VCC = 14V, VGG = 14V, TA =TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Oscillator Section Frequency VCC = 14V to 72V, EAINV = 1.9V, TJ = 25°C 100 110 120 kHz VCC = 11V to 14V, Over Temperature 90 120 kHz Error Amplifier Section EAINV EAOUT = EAINV 1.97 2 2.03 V IEAINV EAOUT = EAINV 100 300 nA EAVOL EAOUT/EAINV, 25°C 70 80 dB EAOUT High EAINV ≤ 1.9V, IEAOUT = –100µA 5.5 6.2 V EAOUT Low EAINV ≥ 2.1V, IEAOUT = 100µA 0.8 1.1 V Unity Gain Bandwidth TJ = 25°C, F = 100kHz 0.85 1 MHz PSRR, EAOUT EAOUT = EAINV, VCC = 14V 80 90 dB Current Sense Comparator Section Threshold (Referred to VCC) 0.4 0.5 0.6 V Input Bias Current CS = VCC – 0.4V 0.2 1 µA Propagation Delay VOVERDRIVE = 250mV 0.7 1.2 µs Blanking Time VOVERDRIVE = 250mV 75 200 300 ns Gate Drive Output Section VOH IOUT = –200mA 9.5 11 V VOL IOUT = 20mA 0.2 0.36 V IOUT = 200mA 1.5 2 V Rise Time TJ = 25°C, CLOAD = 1nF 40 70 ns Fall Time TJ = 25°C, CLOAD = 1nF 40 70 ns Pulse Width Modulator Section Maximum Duty Cycle EAINV ≤ 1.9V 85 90 % Minimum Duty Cycle EAINV ≥ 2.1V 0 % Modulator Gain EAOUT = 2.5V to 3.5V 30 %/V Undervoltage Lockout Section Start Threshold OUT – SRC, EAINV ≤ 1.9V, SRC = 0V 10 11 12 V UVLO Hysteresis 1.5 2 2.5 V CONNECTION DIAGRAM Note: The four GND pins are internally connected. DIL-16, SOIC-16 (Top View) N or DP Packages VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +72V EAINV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to +10V EAOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to +10V SS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to +10V DIODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to VCC VGG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to VCC +14V CS . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC – 5V to VCC +0.6V IOUT Pulsed . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.8A to +0.6A SRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.6V to VCC Storage Temperature . . . . . . . . . . . . . . . . . . . −65°C to +150°C Junction Temperature . . . . . . . . . . . . . . . . . . . –55°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. ABSOLUTE MAXIMUM RATINGS Not Recommended for New Designs |
Nº de peça semelhante - UC3578DP |
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Descrição semelhante - UC3578DP |
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