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UCS81003AMR-C1A Folha de dados(PDF) 10 Page - Microchip Technology |
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UCS81003AMR-C1A Folha de dados(HTML) 10 Page - Microchip Technology |
10 / 108 page UCS81003 DS20005334A-page 10 2014 Microchip Technology Inc. Port Power Switch Operation With Trip Mode Current Limiting Region 2 Current Keep-Out IBUS_R2MIN —0.12 — A Minimum VBUS Allowed at Output VBUS_MIN 1.5 2.0 2.25 V Note 5 Port Power Switch Operation with Constant Current Limiting (Variable Slope) Region 2 Current Keep-Out IBUS_R2MIN —1.68 — A Minimum VBUS Allowed at Output VBUS_MIN 1.5 2.0 2.25 V Note 5 Current Measurement - DC Current Measurement Range IBUS_M 0 — 2988.6 mA Range 0 – 255 LSB (see Note 4) Reported Current Measurement Resolution DIBUS_M — 11.72 — mA 1 LSB Current Measurement Accuracy — ±2 — % 180 mA < IBUS < ILIM —±2 — LSB IBUS < 180 mA Current Measurement - AC Sampling Rate — 500 — µs Charge Rationing - DC Accumulated Current Measurement Accuracy —±4.5 — % Charge Rationing - AC Current Measurement Update Time tPCYCLE —1 — s Attach/Removal Detection VBUS Bypass - DC On Resistance RON_BYP —50 — Leakage Current ILEAK_BYP — — 3 µA Switch off, TA <+85°C, Note 2 Current Limit IDE- T_CHG/IBUS_BY P —2 — mA VDD = 5V and VBUS > 4.75V Attach/Removal Detection - DC Attach Detection Threshold IDET_QUAL — 800 — µA Programmable 200 – 1000 µA, default listed. TABLE 1-2: ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Characteristics: Unless otherwise specified, VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V, VPULLUP = 3V to 5.5V, TJ = -40°C to +125°C; all Typical values at VDD = VS = 5V, TJ = +27°C. Characteristic Sym. Min. Typ. Max. Unit Conditions Note 1: For split supply systems using the Attach Detection feature, VS must not exceed VDD +150 mV. 2: This parameter is ensured by design and is not 100% tested. 3: This parameter is characterized, but not 100% production tested. 4: The current measurement full-scale range maximum value is 3.0A. However, the UCS81003 cannot report values above ILIM (if IBUS_R2MIN ILIM) or above IBUS_R2MIN (if IBUS_R2MIN > ILIM and ILIM 1.68A). 5: The Minimum and Maximum values represent the boundaries of a programmable range. Each value in the range is typical. |
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