Datenblatt-Suchmaschine für elektronische Bauteile |
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LM3622MX-8.4 Datenblatt(PDF) 2 Page - National Semiconductor (TI) |
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LM3622MX-8.4 Datenblatt(HTML) 2 Page - National Semiconductor (TI) |
2 / 9 page Connection Diagram Pin Description Pin No. Name I/O Description 1LV SEL Input Low-voltage detection threshold Select. The threshold is 2.15V/cell when this pin is pulled low to GND and 2.70V/cell when it is pulled up to V CC. The battery voltage is sensed between CEL and CS pins. 2LV ENB Input Low-voltage detection Enable. The low-voltage detection is enabled when this pin is pulled Low to GND. Pulling this pin HIGH to V CC disables the low-voltage detection. 3LV Output Output of the low-voltage detection. This pin is a NPN open-collector output that goes to low impedance state when LV ENB is pulled LOW and the battery voltage is below the threshold set by LV SEL. LV stays in HIGH impedance state at any battery voltage when LV ENB is pulled HIGH to VCC. LV can be used for turning on a low current source to recondition a deeply depleted battery. 4 GND Ground IC common. 5 CS Input Input for battery charge current and battery negative-terminal voltage sensing. Battery charging current is sensed through an external resistor, R CS, connected between the battery’s negative terminal and GND. The maximum charge current is regulated to a value of 100mV/R CS. 6 CEL Input Battery positive-terminal voltage sensing. 7 EXT Output Output of the controller for driving a PNP transistor or P-MOSFET. The controller modulates the current sinking into this pin to control the regulation of either the charge current or the battery voltage. 8V CC Power Supply IC power supply 8-Lead Surface Mount Package DS100974-2 Refer to the Ordering Information Table in this Datasheet for Specific Part Number See NS Package M08A www.national.com 2 |
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Ähnliche Beschreibung - LM3622MX-8.4 |
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