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Battery/Charger Load Switch Approximates Ideal Diode

高工
2012-04-22 14:39:02    评分
Battery/Charger Load Switch Approximates Ideal Diode


关键词: load switching, rechargeable battery-powered systems, Li+ battery chargers, power OK (POK) outputs 


Abstract: Two circuits are described. The first uses external MOSFETs driven by the Power OK (POK) output of a Li-cell charger IC (MAX8814), to switch a load between battery and charging source without intervention from a microcontroller or system software. For charger ICs without a POK output (such as the MAX1507), the second circuit does the same switching using MOSFETs and a comparator (MAX920). 


 Battery Charger Load Switch Approximates Ideal Diode.pdf



关键词: Battery     Charger     Switch     Ap    

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