R5400N Series
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R5400N Series Li-ion/polymer 1Cell Protector The R5400N Series are high input voltage CMOS-based protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion (Li-ion) / Lithium polymer excess load current, further include a short circuit protector for preventing large external short circuit current and excess discharge-current. Each of these ICs is composed of three voltage detectors, reference units, a delay circuit, a short circuit detector, an oscillator, a counter, and a logic circuit. SOT-23-5 package is available. FEATURES • Supply Voltage (VDD)···························· • Charger Negative Input Voltage (V-) ··· • Operating Input Voltage Range (VDD)····· • Supply Current (IDD) ····························· 0.05V to 0.20V (0.005V steps) ±15mV Typ. 12ms Typ. 1.3V Typ. 300μs Selectable (A Version) SOT-23-5 BLOCK DIAGRAM R5400N VDD DC Circuit Oscillator Counter Logic Circuit Level Shift Short Detector Delay Logic Circuit VD2 VD3 SELECTION GUIDE Package .xxx : Serial Number for the R5400N Series designating input three threshold for over-charge, over-discharge, and excess discharge-current detectors. .$.: Designation of Output delay time for over-charge. (.C.) tVDET1=1.1s (.F. ) tVDET1=275ms .∗ : Designation of 0V-battery charge option. (.A.) 0V-charge available (.B.) 0V-charge unavailable VVDD VSS DOUT COUT APPLICATIONS • Li-ion / Li polymer protector of over-charge, over-discharge, excess discharge-current, excess charge-current for battery pack • High precision protectors for cell-phones and any other gadgets using on board Li-ion / Li polymer battery