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TPS79230DBVT Fiches technique(PDF) 3 Page - Texas Instruments |
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TPS79230DBVT Fiches technique(HTML) 3 Page - Texas Instruments |
3 / 13 page TPS79201, TPS79225 TPS79228, TPS79230 SLVS337B – MARCH 2001 – REVISED MAY 2002 www.ti.com 3 ELECTRICAL CHARACTERISTICS over recommended operating free-air temperature range, (TJ = –40 to 125°C), VI = VO(typ) + 1 V, IO = 1 mA, EN = VI, Co = 10 µF, C(byp) = 0.01 µF (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TPS79201 TJ = 25°C, 1.22 V ≤ VO ≤ 5.2 VO TPS79201 0 µA < IO < 100 mA, 1.22 V ≤ VO ≤ 5.2 V (1) 0.98 VO 1.02 VO TPS79225 TJ = 25°C 2.5 Output voltage TPS79225 0 µA < IO < 100 mA, 3.5 V < VI < 5.5 V 2.45 2.55 V Output voltage TPS79228 TJ = 25°C 2.8 V TPS79228 0 µA < IO < 100 mA, 3.8 V < VI < 5.5 V 2.744 2.856 TPS79230 TJ = 25°C 3 TPS79230 0 µA < IO < 100 mA, 4 V < VI < 5.5 V 2.94 3.06 Quiescent current (GND current) 0 µA < IO < 100 mA, TJ = 25°C 170 µA Quiescent current (GND current) 0 µA < IO < 100 mA 250 µA Loadregulation 0 µA < IO < 100 mA, TJ = 25°C 5 mV Output voltage line regulation ( ∆VO/VO)(2) VO + 1 V < VI ≤ 5.5 V, TJ = 25°C 0.05 %/V Output voltage line regulation ( ∆VO/VO)(2) VO + 1 V < VI ≤ 5.5 V, 0.12 %/V C(byp) = 0.001 µF 50 Output noise voltage (TPS79228) BW = 100 Hz to 100 kHz, C(byp) = 0.0047 µF 33 µVRMS Output noise voltage (TPS79228) BW = 100 Hz to 100 kHz, IO = 100 mA, TJ = 25°C C(byp) = 0.01 µF 31 µVRMS O , J C(byp) = 0.1 µF 27 R28 Ω C1 F C(byp) = 0.001 µF 50 Time, start-up (TPS79228) RL = 28 Ω, Co = 1 µF, TJ =25°C C(byp) = 0.0047 µF 70 µs Time, start u (TPS79228) TJ = 25°C C(byp) = 0.01 µF 90 µs Output current limit VO = 0 V (1) 285 600 mA UVLO threshold VCC rising 2.25 2.65 V UVLO hysteresis TJ = 25°C VCC rising 100 mV Standby current EN = 0 V, 2.7 V < VI < 5.5 V 0.7 1 µA High level enable input voltage 2.7 V < VI < 5.5 V 2 V Low level enable input voltage 2.7 V < VI < 5.5 V 0.7 V Input current (EN) EN = 0 V –1 1 µA f = 100 Hz, TJ = 25°C, IO = 10 mA 70 Power supply ripple rejection TPS79228 f = 100 Hz, TJ = 25°C, IO = 100 mA 72 dB Power supply ripple rejection TPS79228 f = 10 kHz, TJ = 25°C, IO = 100 mA 75 dB f = 100 kHz, TJ = 25°C, IO = 100 mA 47 TPS79228 IO = 100 mA, TJ = 25°C 60 Dt lt (3) TPS79228 IO = 100 mA 110 V Dropout voltag(3) TPS79230 IO = 100 mA, TJ = 25°C 55 mV TPS79230 IO = 100 mA 100 (1) The minimum IN operating voltage is 2.7 V or VO(typ) + 1 V, whichever is greater. The maximum IN voltage is 5.5 V.Themaximumoutputcurrent is 100 mA. (2) If VO ≤ 2.5 V then VImin = 2.7 V, VImax = 5.5 V: Line regulation (mV) + % V V O V Imax * 2.7 V 100 1000 If VO ≥ 2.5 V then VImin = VO + 1 V, VImax = 5.5 V: (3) IN voltage equals VO(typ) – 100 mV; The TPS79225 dropout voltage is limited by the input voltage range limitations. |
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