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TPS2149 Datasheet(PDF) 8 Page - Texas Instruments |
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TPS2149 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 19 page TPS2149 TPS2159 SLVS401 – AUGUST 2001 8 www.ti.com PARAMETER MEASUREMENT INFORMATION 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 1. Timing and Internal Voltage Regulator Transition Waveforms TYPICAL CHARACTERISTICS Figure 2 VO(OUT) (2 V/div) VI = 5 V TA = 25°C CL = 1 µF RL = 25 Ω SWITCH TURNON DELAY AND RISE TIME WITH 1- µF LOAD 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4.2 t – Time – ms VI(EN) (5 V/div) Figure 3 SWITCH TURNOFF DELAY AND FALL TIME WITH 1- µF LOAD 0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4.2 t – Time – ms VO(OUT) (2 V/div) VI = 5 V TA = 25°C CL = 1 µF RL = 25 Ω VI(EN) (5 V/div) |
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