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TPS2070 Datasheet(PDF) 11 Page - Texas Instruments |
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TPS2070 Datasheet(HTML) 11 Page - Texas Instruments |
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11 / 29 page  TPS2070, TPS2071 FOUR-PORT USB HUB POWER CONTROLLERS SLVS287A – SEPTEMBER 2000 – REVISED FEBRUARY 2001 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION IN OUT DUT + TEST CIRCUIT Current Meter Figure 1. Current Limit Response toff tpd(off) ton tpd(on) 50% 50% 90% 90% 10% 10% tr tf 90% 90% 10% 10% VI(ENx) VO(OUTx) VO(OUTx) TIMING Figure 2. Timing and Internal Voltage Regulator Transition Waveforms 0 2 4 6 8 10 12 14 16 18 20 VI(BP) = 5 V TA = 25°C CL = 10 µF RL = 50 Ω t – time – ms VI(EN) (2 V/div) VO(out) (2 V/div) VI(BP) = 5V TA = 25°C CL = 10 µF RL = 50 Ω t – time – ms VI(EN) (2 V/div) VO(OUT) (2 V/div) Figure 3. Turnon Delay and Rise Time (BP Switch) Figure 4. Turnoff Delay and Fall Time (BP Switch) 0 2 4 6 8 10 12 141618 20 |
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