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NE57606CD Datasheet(PDF) 6 Page - NXP Semiconductors |
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NE57606CD Datasheet(HTML) 6 Page - NXP Semiconductors |
6 / 12 page Philips Semiconductors Product data NE57606 2 to 4 cell redundant Lithium-ion overcharge monitor 2002 Oct 10 6 APPLICATION INFORMATION The NE57606 can be used within 2, 3, or 4-cell battery packs. This can be done by electrically creating a short-circuit across the pins that would have been connected to the ends of the cells. For a 3-cell pack pin VC1 should be connected to ground (pins 3 to 4). All of the combinations are shown in Table 1. Table 1. Cells VC1 VC2 VC3 VC4 4-cell VC1 VC2 VC3 VC4 3-cell VC1 VC1 VC2 VC3 2-cell VC1 VC1 VC1 VC2 The schematics for a 3-cell and a 4-cell monitoring circuit are shown in Figures 1 and 2 respectively. C3 C2 C1 OVERVOLTAGE FAULT (OPEN COLLECTOR) SL01560 VCC NE57606 CDLY 0.1 µF 1 k Ω 0.1 µF 10 k Ω 0.1 µF 10 k Ω VC4 VC3 VC2 VC1 100 Ω V+ V– 0.1 µF OUT GND 1 23 4 5 6 7 8 0.22 µF Figure 1. 3-cell monitoring circuit SL01561 C4 C3 C2 OVERVOLTAGE FAULT (OPEN COLLECTOR) VCC CDLY 0.1 µF 1 K Ω 0.1 µF 10 K Ω 0.1 µF 10 K Ω VC4 VC3 VC2 VC1 100 Ω V+ V– 0.1 µF OUT GND 1 23 5 6 7 8 0.22 µF C1 0.1 µF 10 K Ω 4 NE57606 Figure 2. 4-cell monitoring circuit |
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