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TPS70751-EP Fiches technique(PDF) 9 Page - Texas Instruments |
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TPS70751-EP Fiches technique(HTML) 9 Page - Texas Instruments |
9 / 41 page www.ti.com TPS70751-EP DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATOR WITH POWER-UP SEQUENCING FOR SPLIT-VOLTAGE DSP SYSTEMS SLVS718 – DECEMBER 2006 Electrical Characteristics (continued) over recommended operating junction temperature (T J = –55°C to 125°C), VIN1 or VIN2 = VO(nom) + 1 V, IO = 1 mA, EN = 0, C O = 33 µF (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT RESET Minimum input voltage for valid RESET I(RESET) = 300 µA, V(RESET) ≤ 0.8 V 1 1.3 V Trip threshold voltage VO decreasing 92% 95% 98% VO Hysteresis voltage Measured at VO 0.5% VO t(RESET) RESET pulse duration 80 120 160 ms tr(RESET) Rising-edge deglitch 30 µs Output low voltage VI = 3.5 V, I(RESET) = 1 mA 0.15 0.4 V Leakage current V(RESET) = 6 V 1 µA PG1 Minimum input voltage for valid PG1 IO(PG1) = 300 µA, V(PG1) ≤ 0.8 V 1 1.3 V Trip threshold voltage VO decreasing 92% 95% 98% VO Hysteresis voltage Measured at VO 0.5% VO tf(PG1) Falling-edge deglitch 30 µs Output low voltage VI = 2.7 V, I(PG1) = 1 mA 0.15 0.4 V Leakage current V(PG1) = 6 V 1 µA EN High-level EN input voltage 2 V Low-level EN input voltage 0.7 V Input current (EN) –1 1 µA SEQ High-level SEQ input voltage 2 V Low-level SEQ input voltage 0.7 V SEQ pullup current source 6 µA MR1/MR2 High-level MR1/MR2 input voltage 2 V Low-level MR1/MR2 input voltage 0.7 V MR1/MR2 pullup current source 6 µA VOUT2 VOUT2 UV comparator – positive-going input 83% 80% VO 86% VO V threshold voltage of VOUT1 UV comparator VO VOUT2 UV comparator – falling-edge deglitch VSENSE2 decreasing below threshold 140 µs Peak output current 2-ms pulse width 375 mA Discharge transistor current VOUT2 = 1.5 V 7.5 mA VOUT1 VOUT1 UV comparator – positive-going input 83% 80% VO 86% VO V threshold voltage of VOUT1 UV comparator VO 0.5% VOUT1 UV comparator – hysteresis mV VO VOUT1 UV comparator – falling-edge deglitch VSENSE1 decreasing below threshold 140 µs IO = 250 mA, VIN1 = 3.2 V, TJ = 25°C 83 Dropout voltage(4) mV IO = 250 mA, VIN1 = 3.2 V 140 Peak output current 2-ms pulse width 750 mA Discharge transistor current VOUT1 = 1.5 V 7.5 mA UVLO threshold 2.4 2.65 V (4) Input voltage (VIN1 or VIN2) = VO(typ) – 100 mV. For 1.8-V regulators, the dropout voltage is limited by the input voltage range. The 3.3-V regulator input voltage is to 3.2 V to perform this test. 9 Submit Documentation Feedback |
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