東瑞電子所代理的-日本理光公司(Ricoh),在電源管理IC方面的發展已有多年的歷史,尤其在鋰電保護IC上,更獲得各大廠的採用,日前針對單顆鋰電池而設計的鋰電保護IC,推出新產品編號R5426,已廣泛的應用於手機、DSC、PDA、自動車等產品上。
東瑞電子表示,此IC特點為:1.Absolute maximum rating:28V。2.Supply current:3.0uA (Typ.) 。3.Standby current:0.1uA (Max.)。4.High accuracy detector threshold: +/-25mV。5.Over-charge detector threshold:4.0V~4.5V step of 0.005V。 Over-discharge detector threshold:2.0V~3.0V step of 0.005V。Excess discharge current threshold:0.05V~0.4V step of 0.005V。Excess charge current threshold:Fixed at -0.1V。6.Over-charge detector output delay:250ms/1s/5s。Over-discharge detector output delay:20ms。Excess discharge current detector output delay:6ms/12ms。Excess charge current detector output delay:8ms/16ms/1s。7.0V battery charge option: acceptable/unacceptable。8.With latch function after over-charge detect。9.Ultra small package:SOT23-6(2.9*2.8*1.1mm);SON6(1.6*3.0*0.85mm)。10.DS pin function: at Vdd level,output delay time of all items except short-circuit can be reduced。 (delay time for over-charge becomes about 1/90 of normal state.) at the specified middle range level,delay circuit is disabled。