UB262

UNISONIC TECHNOLOGIES CO., LTD UB262 Preliminary 1-CELL LITHIUM-ION/POLYMER BATTERY PROTECTION IC CMOS IC  DESCRIPTION The UTC UB262 is a series of lithium-ion / lithium-polymer rechargeable battery protection ICs incorporating high accuracy voltage detection circuits and delay circuits. The UTC UB262 is suitable for protection of single cell lithium-ion / lithium polymer battery packs from overcharge, over discharge and over current. The ultra-small package and less required external components make it ideal to integrate the UTC UB262 into the limited space of battery pack. 54 6 1 23 SOT-26  FEATURES * High-accuracy voltage detection circuit Overcharge detection voltage: 4.250~4.350V, Accuracy: ±50Mv Overcharge release voltage: 4.050~4.150V, Accuracy: ±50mV Overdischarge detection voltage: 2.30~2.90V, Accuracy: ±100mV Overdischarge release voltage: 2.90~3.00V, Accuracy: ±100mV Discharge overcurrent detection voltage: 150mV, Accuracy: ±30mV Short-circuiting detection voltage: 0.85V (fixed), Accuracy: ±300mV * Delay times are generated by an internal circuit (external capacitors are unnecessary) Overcharge delay time: 100ms (typ.) Overdischarge delay time: 25ms (typ.) Discharg e overcurrent delay time: 10ms (typ.) Short circuit delay time: 500μs (typ.) * Low current consumption (Products with Power-down Function) Operation mode: 3.0μA typ., 6.0μA max. (VDD=3.9V) Ultra low power-down current: 0.1μA max. (VDD=2.0V) * High-withstanding-voltage device is used for charger...