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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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UCC28528 Fiches technique(PDF) 5 Page - Texas Instruments |
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UCC28528 Fiches technique(HTML) 5 Page - Texas Instruments |
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5 / 32 page  UCC28521, UCC28528 SLUS608B − JANUARY 2005 REVISED JUNE 2005 5 www.ti.com ELECTRICAL CHARACTERISTICS TA = –40°C to 105°C for the UCC2851x, TA = TJ, VCC = 12 V, RT = 156 kΩ, RCT_BUFF = 10 kΩ (unless otherwise noted) current amplifier PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Input offset voltage VCM = 0 V, VCAOUT = 3 V –5 0 5 mV Input bias current VCM = 0 V, VCAOUT = 3 V −50 −100 nA Input offset current VCM = 0 V, VCAOUT = 3 V 25 100 nA Open loop gain VCM = 0 V, 2 V ≤ VCAOUT ≤ 5 V 90 dB Common−mode rejection ratio 0 V ≤ VCM ≤ 1.5 V, VCAOUT = 3 V 80 dB High-level output voltage ILOAD = –500 µA 5.6 6.3 7.0 V Low-level output voltage ILOAD = 500 µA 0 0.2 0.5 V Gain bandwidth product(1) See Note 1 2.0 MHz oscillator PARAMETER TEST CONDITIONS MIN TYP MAX UNITS fPWM, PWM frequency, initial accuracy TA = 25°C 170 200 230 kHz Frequency, voltage stability 10.8 V ≤ VCC ≤ 15 V −1% 1% Frequency, total variation Line, Temp 160 240 kHz dc-to-dc ramp peak voltage 4.5 5.0 5.5 dc-to-dc ramp amplitude voltage(1) (peak-to-peak) 4.0 V PFC ramp peak voltage 4.5 5.0 5.5 V PFC ramp amplitude voltage (peak-to-peak) 3.5 4.0 4.5 voltage reference PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Input voltage 25 °C 7.39 7.50 7.61 V Input voltage Over temperature 7.35 7.50 7.65 V Load regulation IREF = −1 mA to −6 mA 5 15 mV Line regulation 10.8 V ≤ VCC ≤ 15 V 1 10 mV Short circuit current VREF = 0V −20 –25 −50 mA peak current limit PARAMETER TEST CONDITIONS MIN TYP MAX UNITS PKLMT reference voltage –20 0 20 mV PKLMT propagation delay PKLMT to GT1 150 300 500 ns multiplier PARAMETER TEST CONDITIONS MIN TYP MAX UNITS IMOUT, high-line low-power output current IAC = 500 µA, VFF = 4.7 V, VAOUT = 1.25 V −3 –6 −9 IMOUT, high-line high-power output current IAC = 500 µA, VFF = 4.7 V, VAOUT = 5 V −75 –90 −110 IMOUT, low-line low-power output current IAC = 150 µA, VFF = 1.4 V, VAOUT = 1.25 V −10 –15 −50 µA IMOUT, low-line high-power output current IAC = 150 µA, VFF = 1.4 V, VAOUT = 5 V −245 –290 −330 µA IMOUT, IAC-limited output current IAC = 150 µA, VFF = 1.3 V, VAOUT = 5 V −245 –290 −330 Gain constant (k) IAC = 300 µA, VFF = 2.8 V, VAOUT = 2.5 V 0.8 1 1.2 1/V IAC = 150 µA, VFF = 1.4 V, VAOUT = 0.25 V 0 –0.2 µA IMOUT, zero current IAC = 500 µA, VFF = 4.7 V, VAOUT = 0.25 V 0 –0.2 µA IMOUT, zero current IAC = 500 µA, VFF = 4.7 V, VAOUT = 0.5 V 0 –0.2 µA Power limit (IMOUT × VFF) IAC = 150 µA, VFF = 1.4 V, VAOUT = 5 V −343 –406 −462 µW 1. Ensured by design. Not 100% tested in production. |
Numéro de pièce similaire - UCC28528 |
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Description similaire - UCC28528 |
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