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TPS54900PWG4 Datasheet(PDF) 2 Page - Texas Instruments |
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TPS54900PWG4 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 17 page TPS54900 SLVS405 − OCTOBER 2001 2 www.ti.com absolute maximum ratings over operating free-air temperature (unless otherwise noted)† Supply voltage range‡, VIN −0.3 V to 18 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range‡, EN, CBS, FB0, FB1, FB2, FB3 −0.3 V to VIN + 0.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range‡, SCLK, SDI, SFS −0.3 V to 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output voltage range‡, LX0, LX1, LX2, LX3 −0.5 V to VIN + 0.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output voltage range‡, SDO −0.3 V to 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous power dissipation See Dissipation Rating Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating junction temperature, TJ −40 °C to 125°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg −55 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead soldering temperature, 10 seconds 300 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. ‡ All voltages values are with respect to device GND terminal. DISSIPATION RATING TABLE−FREE-AIR TEMPERATURES§ PACKAGE AIR FLOW (CFM) TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING TA = 85°C POWER RATING PW 0 500 mW 5 mW/ °C 275 mW 200 mW § Low-K PWB recommended operating conditions (unless otherwise noted) MIN NOM MAX UNITS Supply voltage, VIN 14.25 15 16 V Output current, LX0, LX1, LX2, LX3 20 100 mA Synchronized PWM frequency (see Note 1) 552 kHz Inductor 200 225 250 µH Output capacitor 10 µF Operating junction temperature, TJ −40 125 °C NOTE 1: Synchronized PWM frequency equal to one eighth of SCLK frequency. electrical characteristics over recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT I(qq) VI disable current EN > VIH, all outputs software disabled 1.7 2.16 mA I(q) VI quiescent current EN pin < VIL 0.7 1 mA CUMULATIVE REGULATION Regulation accuracy Voltage codes 12.3 V, 12.7 V, 13.1 V −2% 2% Regulation accuracy Voltage codes < 12.3 V −2.5% 2.5% OSCILLATOR f(osc) Free-run frequency 350 450 550 kHz f(sync) Sync frequency range f(sync) = SCLK / 8 550 750 kHz Phase stagger count Phase difference after initialization command (see Note 2) 4 SCLK UVLO V(UVLO) Undervoltage lockout threshold 13 13.5 V Vhys(UVLO) UVLO hysteresis 1.3 1.45 1.6 V NOTE 2: Ensured by design |
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