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NE57606CD Datasheet(PDF) 2 Page - NXP Semiconductors |
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NE57606CD Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 12 page Philips Semiconductors Product data NE57606 2 to 4 cell redundant Lithium-ion overcharge monitor 2 2002 Oct 10 853-2296 27198 GENERAL DESCRIPTION The NE57606 is a redundant overcharge detection IC for use within 2-4 cell Li-ion battery packs. It detects the voltage of each Li-ion cell and issues an overcharge signal which then can be used to alert the portable host or be used to turn-off a series charge MOSFET within the battery pack. Its purpose is to act as a back-up protection circuit to a primary Li-ion protection circuits such as the NE57605 and NE57607. The overcharge signal is an open collector output which can be wire-ORed with other safety functions. FEATURES • Consumption current (V CEL = 3.8 V) 3.0 µA typical • Consumption current (V CEL = 2.3 V) 0.3 µA typical • Input current between cell pins (V CEL = 3.8 V) ±0.3 µA max • Overcharge detection voltage = threshold voltage ± 50 mV • Overcharge detection delay time (CT = 0.22 µF) 1.5 s typical • Four voltage ranges available APPLICATIONS • Li-ion Battery pack protection SIMPLIFIED DEVICE DIAGRAM SL01558 OV REF VC4 GND OUT OV REF VC3 OV REF VC2 OV REF VC1 0.7 V VCC CT Voltage options The device has 4 voltage options. Part Number Detection voltage Hysteresis NE57606Y 4.350 V 250 mV NE57606C 4.225 V None NE57606D 4.130 V None NE57606E 4.450 V 100 mV |
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