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NT1791
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NT1790, NT1791, NT1792, NT1793
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Status
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mass production
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Overview
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NT1790/NT1791/NT1792/NT1793 is an accurate secondary battery protection IC for 3s/4s-cell Lithium-Ion/Lithium-Polymer battery packs, on which a precise voltage detection circuit with a specific reference is embedded.
This chip monitors individual cell voltages. While any cell voltage reaches or goes over the specified voltage for a period longer than the delay time set, NT1790/NT1791/NT1792/NT1793 activates an external MOSFET to blow the three-terminal protection fuse, permanently disabling the battery pack. Beside, this chip has an on-chip temperature sensing circuit, which can also offer an over-temperature protection. |
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Features
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| * Secondary Protection for 3- or 4-Cell * High Accuracy Over Charge Sense Voltage: ±25mV * Programmable Delay Time, or Optional Internal Delay Time * High Input-Voltage Device -Absolute Maximum Rating: 40V -Operating Voltage Range: 5.5V to 26V * Low Power Consumption:Icc < 3uA |
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Applications
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| * Notebook PCs * Portable Instrumentation * Medical and Test Equipment |
