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TL-SCSI285Y Scheda tecnica(PDF) 3 Page - Texas Instruments |
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TL-SCSI285Y Scheda tecnica(HTML) 3 Page - Texas Instruments |
3 / 6 page TL-SCSI285 FIXED-VOLTAGE REGULATORS FOR SCSI ACTIVE TERMINATION SLVS065F – NOVEMBER 1991 – REVISED JULY 1999 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics, VI = 4.5 V, IO = 500 mA, TJ = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS† TL-SCSI285PW UNIT PARAMETER TEST CONDITIONS† MIN TYP MAX UNIT Output voltage IO =20mAto500 mA VI =3 55Vto5 5V TJ = 25°C 2.82 2.85 2.88 V Output voltage IO = 20 mA to 500 mA, VI = 3.55 V to 5.5 V TJ = 0 to 125°C 2.79 2.91 V Input regulation VI = 3.55 V to 5.5 V 5 15 mV Ripple rejection f = 120 Hz, Vripple = 1 VO(PP) –62 dB Output regulation IO = 20 mA to 500 mA 5 30 mV Output noise voltage f = 10 Hz to 100 kHz 500 µV Dropout voltage IO = 500 mA 0.7 V IO = 0 2 5 Bias current IO = 27 mA, equivalent 1 line asserted 3 6 mA IO = 500 mA, equivalent 18 lines asserted (8-bit) 26 49 † Pulse-testing techniques are used to maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1- µF capacitor across the input and a 22.0-µF tantalum capacitor with equivalent series resistance of 1.5 Ω on the output. electrical characteristics, VI = 4.5 V, IO = 500 mA, TJ = 25°C PARAMETER TEST CONDITIONS† TL-SCSI285Y UNIT PARAMETER TEST CONDITIONS† MIN TYP MAX UNIT Output voltage IO = 20 mA to 500 mA, VI = 3.55 V to 5.5 V 2.85 V Input regulation VI = 3.55 V to 5.5 V 5 mV Ripple rejection f = 120 Hz, Vripple = 1 VO(PP) –62 dB Output regulation IO = 20 mA to 620 mA 5 mV Output regulation IO = 20 mA to 500 mA 5 mV Output noise voltage f = 10 Hz to 100 kHz 500 µV IO = 0 2 Bias current IO = 27 mA, equivalent 1 line asserted 3 mA Bias current IO = 500 mA, equivalent 18 lines asserted (8-bit) 26 mA IO = 620 mA 37 † Pulse-testing techniques are used to maintain the virtual junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.1- µF capacitor across the input and a 22.0-µF tantalum capacitor with equivalent series resistance of 1.5 Ω on the output. |
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