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TPS54311MPWPREP Datasheet(PDF) 5 Page - Texas Instruments |
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TPS54311MPWPREP Datasheet(HTML) 5 Page - Texas Instruments |
5 / 21 page www.ti.com Electrical Characteristics TPS54311-EP, TPS54312-EP, TPS54313-EP, TPS54314-EP, TPS54315-EP, TPS54316-EP SGLS376A – FEBRUARY 2007 – REVISED MARCH 2007 T J = –55°C to 125°C, VIN = 3 V to 6 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE, VIN VIN Input voltage range 3 6 V fs = 350 kHz, FSEL ≤ 0.8 V, 6.2 9.6 RT open xxx Quiescent current fs = 550 kHz, FSEL ≥ 2.5 V, mA 8.4 12.8 Phase pin open, RT open Shutdown, SS/ENA = 0 V 1 1.4 UNDER VOLTAGE LOCK OUT Start threshold voltage, UVLO 2.95 3 V Stop threshold voltage, UVLO 2.7 2.8 Hysteresis voltage, UVLO 0.14 V Rising and falling edge deglitch, 2.5 µs UVLO(1) BIAS VOLTAGE Output voltage, VBIAS I(VBIAS) = 0 2.7 2.8 2.95 V Output current, VBIAS(2) 100 µA OUTPUT VOLTAGE TJ = 25°C VIN = 5.0 V 0.9 V TPS54311 3 ≤ V IN ≤ 6V 0 ≤ I L ≤ 3A –55 °C ≤ T J ≤ 125°C –3.0% 3.0% TJ = 25°C VIN = 5.0 V 1.2 V TPS54312 3 ≤ V IN ≤ 6V 0 ≤ I L ≤ 3A –55 °C ≤ T J ≤ 125°C –3.0% 3.0% TJ = 25°C VIN = 5.0 V 1.5 V TPS54313 3 ≤ V IN ≤ 6V 0 ≤ I L ≤ 3A –55 °C ≤ T J ≤ 125°C –3.0% 3.0% VOOutput Voltage TJ = 25°C VIN = 5.0 V 1.8 V TPS54314 3 ≤ V IN ≤ 6V 0 ≤ I L ≤ 3A –55 °C ≤ T J ≤ 125°C –3.0% 3.0% TJ = 25°C VIN = 5.0 V 2.5 V TPS54315 3 ≤ V IN ≤ 6V 0 ≤ I L ≤ 3A –55 °C ≤ T J ≤ 125°C –3.0% 3.0% TJ = 25°C VIN = 5.0 V 3.3 V TPS54316 3 ≤ V IN ≤ 6V 0 ≤ I L ≤ 3A –55 °C ≤ T J ≤ 125°C –3.0% 3.0% REGULATION Line regulation(1)(3) IL = 1.5 A, 350 ≤ f s ≤ 550 kHz, 0.21 %/V Load regulation(1)(3) IL = 0 A to 3 A, 350 ≤ f s ≤ 550 kHz, 0.21 %/A OSCILLATOR FSEL ≤ 0.8 V, RT open 255 350 450 Internally set free-running frequency kHz range FSEL ≥ 2.5 V, RT open 400 550 700 RT = 180 k Ω (1% resistor to AGND)(1) 252 280 308 Externally set free-running frequency RT = 160 k Ω (1% resistor to AGND) 290 312 350 kHz range RT = 68 k Ω (1% resistor to AGND)(1) 663 700 762 High-level threshold voltage at FSEL 2.5 V Low-level threshold voltage at FSEL 0.8 V Pulse duration, FSEL(1) 50 ns Frequency range, FSEL(1)(4) 330 700 kHz Ramp valley(1) 0.75 V (1) Specified by design (2) Static resistive loads only (3) Specified by the circuit used in Figure 10. (4) To ensure proper operation when RC filter is used between external clock and FSEL pin, the recommended values are R ≤ 1 kΩ and C ≤ 68 pF. 5 Submit Documentation Feedback |
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