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TPS2147 Datasheet(PDF) 7 Page - Texas Instruments |
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TPS2147 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 34 page TPS2145, TPS2147 TPS2155, TPS2157 SLVS333 − AUGUST 2001 7 www.ti.com electrical characteristics over recommended operating junction-temperature range, 2.9 V ≤ VI(VIN/SWIN1) ≤ 5.5 V, 2.9 V ≤ VI(SWIN2) ≤ 5.5 V, VI(ENx) = 0 V or VI(ENx) = 5 V, VI(LDO_EN) = 5 V, TJ = −40°C to 100°C (unless otherwise noted) enable input, ENx (active low) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V II Input current, pullup (source) VI(ENx) = 0 V 5 µA enable input, ENx (active high) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V II Input current, pulldown (sink) VI(ENx) = 5 V 5 µA enable input, LDO_EN (active high) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V II Input current, pulldown VI(LDO_EN) = 5 V 5 µA Falling-edge deglitch (see Note 1) 50 µs NOTE 1. Specified by design, not tested in production. logic output, OCx PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Current sinking at VO = 0.4 V 1 mA thermal shutdown characteristics PARAMETER TEST CONDITIONS MIN TYP MAX UNIT First thermal shutdown (shuts down switch or regulator in overcurrent) Occurs at or above specified temperature when overcurrent is present. 120 Recovery from thermal shutdown 110 °C Second thermal shutdown (shuts down all switches and regulator) Occurs on rising temperature, irrespective of overcurrent. 155 °C Second thermal shutdown hysteresis 10 |
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