UB2421

UNISONIC TECHNOLOGIES CO., LTD UB2421 Preliminary CMOS IC ONE CELL LITHIUM-ION / POLYMER BATTERY PROTECTION IC „ DESCRIPTION UTC UB2421 is a lithium-ion / lithium-polymer rechargeable battery protection IC incorporating high accuracy voltage detection circuits and delay circuits. It is suitable for protection of single cell lithium-ion / lithium polymer battery packs from overcharge, over discharge and over current. The tiny package required external few components make the UTC UB2421 be able to be applied to space limited battery pack. „ FEATURES * Wide supply voltage range: VDD=1.8V~9.0V * Ultra-low quiescent Current: IDD=3.0μA (VDD=3.9V) * Ultra-low power-down Current: IPD=0.1μA (VDD=2.0V) * Overcharge detection voltage: VOCU=4.30V±0.05V * Overcharge release voltage: VOCR=4.10V±0.05V * Overdischarge release voltage: VODL=2.40V±0.10V * Overdischarge release voltage: VODR=3.00V±0.10V * Over current detection voltage: VOI1=0.15V±0.03V * Short circuit detection voltage: VOI2=1.35V (Fixed) * Charger detection voltage: VCH=-0.7V * Delay times are generated by an internal circuit. (External capacitors are unnecessary.) „ ORDERING INFORMATION Ordering Number UB2421G-AG6-R Package SOT-26 Packing Tape Reel „ MARKING www.unisonic.com.tw Copyright © 2012 Unisonic Technologies Co., Ltd 1 of 11 QW-R502-321.e Free Datasheet http://www.Datasheet4U.com UB2421 „ PIN CONFIGURATION Preliminary CMOS IC „ PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 PIN NAME OD CSI OC DS VDD VSS DESCRIP...