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UC2524DWG4 Folha de dados(PDF) 3 Page - Texas Instruments |
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UC2524DWG4 Folha de dados(HTML) 3 Page - Texas Instruments |
3 / 18 page www.ti.com ELECTRICAL CHARACTERISTICS UC1524 UC2524 UC3524 SLUS180E – NOVEMBER 1999 – REVISED OCTOBER 2005 these specifications apply for T A = –55°C to 125°C for the UC1524, –25°C to 85°C for the UC2524, and 0°C to 70°C for the UC3524, V IN = 20 V, and f = 20 kHz, TA = TJ, over operating free-air temperature range (unless otherwise noted) UC1524/UC2524 UC3524 PARAMETER TEST CONDITIONS UNIT MIN TYP MAX MIN TYP MAX REFERENCE SECTION Output voltage 4.8 5.0 5.2 4.6 5.0 5.4 V Line regulation VIN = 8 V to 40 V 10 20 10 30 mV Load regulation IL = 0 mA to 20 mA 20 50 20 50 mV Ripple rejection f = 120 Hz, TJ = 25°C 66 66 dB Short circuit current limit VREF = 0, TJ = 25°C 100 100 mA Temperature stability Over operating temperature range 0.3% 1% 0.3% 1% Long term stability TJ = 125°C, t = 1000 Hrs 20 20 mV OSCILLATOR SECTION Maximum frequency CT = 1 nF, RT = 2 kΩ 300 300 kHz Initial accuracy RT and CT constant 5% 5% Voltage stability VIN = 8 V to 40 V, TJ = 25°C 1% 1% Temperature stability Over operating temperature range 5% 5% Output amplitude Pin 3, TJ = 25°C 3.5 3.5 V Output pulse width CT = 0.01 mfd, TJ = 25°C 0.5 0.5 µs ERROR AMPLIFIER SECTION Input offset voltage VCM = 2.5 V 0.5 5 2 10 mV Input bias current VCM = 2.5 V 2 10 2 10 µA Open loop voltage gain 72 80 60 80 dB Common mode voltage TJ = 25°C 1.8 3.4 1.8 3.4 V Common mode rejection ratio TJ = 25°C 70 70 dB Small signal bandwidth AV = 0 dB, TJ = 25°C 3 3 MHz Output voltage TJ = 25°C 0.5 3.8 0.5 3.8 V COMPARATOR SECTION Duty-cycle % Each output on 0% 45% 0% 45% Zero duty-cycle 1 1 Input threshold V Maximum duty-cycle 3.5 3.5 Input bias current 1 1 µA CURRENT LIMITING SECTION Sense voltage Pin 9 = 2 V with error amplifier set for 190 200 210 180 200 220 mV maximum out, TJ = 25°C Sense voltage T.C. 0.2 0.2 mV/ °C TJ = –55°C to 85°C for the –1 V to 1 V limit –1 1 –1 1 Common mode voltage V TJ = 25°C –0.3 1 OUTPUT SECTION (EACH OUTPUT) Collector-emitter voltage 40 40 V Collector leakage current VCE = 40 V 0.1 50 0.1 50 µ A Saturation voltage IC = 50 mA 1 2 1 2 V Emitter output voltage VIN = 20 V 17 18 17 18 V Rise Time RC = 2 kΩ, TJ = 25°C 0.2 0.2 µs Fall Time RC = 2 kΩ, TJ = 25°C 0.1 0.1 µs Total standby current (Note) VIN = 40 V 8 10 8 10 mA 3 |
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