Product - Secondary Protection ICs
Product - Secondary Protection ICs
NT1742
NT1742
| Part Number | Cells Protected | Stack Function | Protection FETs | Protection for | Note | Package | ||
| Over-Voltage | Under-Voltage | Temperature | ||||||
| NT1742 | 2/3/4-cell | - | Fuse | +/-25mV | - | - | - | DFN-8L TSSOP-8L |
Downloads
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Overview
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NT1742 is an accurate secondary battery protection IC for 2/3/4-cell Lithium-Lon/Lithium-Polymer battery packs, on which a precise voltage detection circuit with a specific reference is embedded.
NT1742 monitors individual cell voltages. If any cell voltage reaches or goes over the specified voltage and lasts for a period longer than the delay time set, NT1742 activates an external MOSFET to blow the three-terminal protection fuse, permanently disabling the battery pack. NT1742 has a CTL pin to control the output voltage of the CO pin. The CTL pin can also offer an over-temperature protection via PTC thermistor. If the thermistor temperature exceeds the over-temperature threshold and lasts for a period longer than the delay time, the output pin activates the external MOSFET to blow external fuse. |
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Features
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| *2-, 3- or 4-Cell Secondary Protection *High Accuracy Overcharge Voltage:4.225V to 4.50V �b25mV *Low Power Consumption:At 3.5V for each cell: 3.5uA max. (+25℃) *High Input-Voltage Device -Absolute Maximum Rating: 40V -Operating Voltage range: 4.5V to 26V *Output Control Function with CTL Pin *Over Temperature Protection with PTC Thermistor-Optional *High Ripple Rejection Ability for Power Supply *Package: TSSOP-8L、DFN-8L |
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Applications
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| *Notebook PCs *Portable Instrumentation *Medical and Test Equipment |
