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LM4673 Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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LM4673 Datasheet(HTML) 4 Page - National Semiconductor (TI) |
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4 / 18 page  Electrical Characteristics (Notes 1, 2) The following specifications apply for A V = 2V/V (RI = 150k Ω), R L =15µH+8 Ω + 15µH unless otherwise specified. Limits apply for T A = 25˚C. (Continued) Symbol Parameter Conditions LM4673 Units (Limits) Typical Limit (Note 6) (Notes 7, 8) P O Output Power R L =15µH+8 Ω + 15µH THD = 10% (max) f = 1kHz, 22kHz BW V DD = 5V 1.7 W V DD = 3.6V 870 mW V DD = 2.5V 350 mW R L =15µH+8 Ω + 15µH THD = 1% (max) f = 1kHz, 22kHz BW V DD = 5V 1.24 W V DD = 3.6V 650 600 mW V DD = 2.5V 300 mW THD+N Total Harmonic Distortion + Noise V DD = 5V, PO = 0.1W, f = 1kHz 0.03 % V DD = 3.6V, PO = 0.1W, f = 1kHz 0.02 % V DD = 2.5V, PO = 0.1W, f = 1kHz 0.02 % PSRR Power Supply Rejection Ratio (Input Referred) V Ripple = 200mVPP Sine, f Ripple = 217Hz, VDD = 3.6, 5V Inputs to AC GND, C I = 2µF 78 dB V Ripple = 200mVPP Sine, f Ripple = 1kHz, VDD = 3.6, 5V Inputs to AC GND, C I = 2µF 72 dB SNR Signal to Noise Ratio V DD = 5V, PO =1WRMS 97 dB e OUT Output Noise (Input Referred) V DD = 3.6V, f = 20Hz – 20kHz Inputs to AC GND, C I = 2µF No Weighting 30 µV RMS V DD = 3.6V, Inputs to AC GND C I = 2µF, A Weighted 23 µV RMS CMRR Common Mode Rejection Ratio (Input Referred) V DD = 3.6V, VRipple =1VPP Sine f Ripple = 217Hz 70 dB T WU Wake-up Time V DD = 3.6V 17 µs T SD Shutdown Time 140 µs η Efficiency V DD = 3.6V, POUT = 400mW R L =8 Ω 88 % V DD = 5V, POUT =1W R L =8 Ω 86 % www.national.com 4 |
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