Li-ION/POLYMER 2-CELL PROTECTOR R5463Kxxxxx SERIES EA-262-120711 OUTLINE The R5463Kxxxxx Series are high voltage CMOS-based protection ICs for over-charge/discharge of two-cell Lithium-ion (Li+) / Lithium polymer, further include a short circuit protection circuit for preventing large external short circuit current and the protection circuits against the excess discharge-current and excess charge current. Each of these ICs is composed of six voltage detectors, a reference unit, a delay circuit, a short circuit protector, an oscillator, a counter, and a logic circuit. When the over-charge voltage threshold or excess-charge current threshold crosses the each detector threshold from a low value to a high value, the output of COUT pin switches to L level after internal fixed delay time. To release over-charge detector after detecting over-charge, the detector can be reset and the output of COUT becomes when a kind of load is connected to VDD after a charger is dis- connected from the battery pack and the cell voltage becomes lower than over-charge detector threshold. In case that a charger is continuously connected to the battery pack, if the cell voltage becomes lower than the over-charge released voltage, over-charge state is also released. The output of DOUT pin, the output of the over-discharge detector and the excess discharge-current detector, switches to L level after internally fixed delay time, when discharged voltage crosses the detector threshold from a high value to a value lower than VDET2. To release over-discharge detector, after detecting over-discharge voltage, connect a charger to the battery pack, and when the battery supply voltage becomes higher than the over-discharge detector threshold, the over-discharge detector is released and the voltage of DOUT pin becomes H. If the battery is discharged lower than maximum voltage for inhibition of charger, recharge current is not ac- ceptable. After detecting excess-discharge current or short current, when the load is disconnected, the excess discharged or short condition is released and DOUT becomes H. After detecting over-discharge voltage, supply current will be kept extremely low by halting internal circuits operation. When the output of COUT is H, if V- pin level is set at -1.6V, the delay time of over-charge and over-discharge detector can be shortened. Especially, the delay time of the over-charge detector can be reduced into approxi- mately 1/60 and test time for protection circuit PCB can be reduced. The output type of COUT and DOUT is CMOS. 1 R5463Kxxxxx FEATURES Manufactured with High Voltage Tolerant Process ... Absolute Maximum Rating 30V Low supply current ......................................... Supply current (At normal mode) Typ. 4.0A Standby current Max. 0.1 A High accuracy detector threshold................. Over-charge detector (Ta=25C) 20mV (Ta=-5C to 55C) 25mV Over-discharge detector 1.0% Excess discharge-current detector (G ver.) 10mV (J ver.) 10% Excess charge-current detector 20mV Variety of detector threshold ..................... Over-charge detector threshold 3.65V-4.32V step of 0.005V Over-discharge detector threshold 2.0V-3.2V step of 0.005V Excess discharge-current threshold (G ver.) 0.05V-0.20V step of 0.005V (J ver.) 0.20V-0.40V step of 0.005V Excess charge-current threshold -0.2V--0.1V step of 0.005V Internal fixed Output delay time ................... Over-charge detector Output Delay 1s Over-discharge detector Output Delay 128ms Excess discharge-current detector Output Delay 12ms Excess charge-current detector Output Delay 8ms Short Circuit detector Output Delay 300s Output Delay Time Shortening Function ..... At COUT is H, if V- level is set at 1.6V, the Output Delay time of detect the over-charge and over-discharge can be reduced. (Delay Time for over-charge becomes about 1/60 of normal state.) 0V-battery charge ......................................... Unacceptable Ultra Small package ..................................... DFN(PLP)1820-6B APPLICATIONS Li+ / Li Polymer protector of over-charge, over-discharge, excess-current for battery pack High precision protectors for cell-phones and any other gadgets using on board Li+ / Li Polymer battery 2