MM4128A/MM4129A 系列是(shi)采用高耐(nai)壓CMOS制造工藝的過(guo)電(dian)(dian)流保護IC,能夠(gou)對可充電(dian)(dian)的2串鋰離子/鋰聚合物電(dian)(dian)池的每串電(dian)(dian)池進行高精度(du)的過(guo)充電(dian)(dian)檢(jian)測(ce)。內部(bu)由(you)電(dian)(dian)壓檢(jian)測(ce)器、基準電(dian)(dian)壓源、振蕩器電(dian)(dian)路、計數器電(dian)(dian)路和(he)邏(luo)輯電(dian)(dian)路構(gou)成。
2串 二次保護用
(1)各種檢測/解除電壓的選擇與(yu)精(jing)度
● 過充電檢測電壓 3.6V ~ 5.0V,5mV進階可選 精度±15mV
● 過充電(dian)滯后電(dian)壓 15mV 精度±5mV
● 待機檢測電壓 2.5V和3.5V可選 精度±300mV
(2)各種檢(jian)測延時時間的(de)選擇范圍
● 過充(chong)電(dian)檢測延(yan)時時間 300us、2.4ms、19.2ms、153.6ms可選
● 過充(chong)電解除(chu)延時時間(jian) 600us、1.2ms可選
(3)內部穩壓(ya)器電壓(ya)的選擇范圍
● COUT引腳輸(shu)出電壓(ya)H 1.8V、3.3V、4.7V可選
(4)消耗電流
● 消耗(hao)電流 (Vcell=4.0V) Typ. 0.85uA Max. 1.70uA
● 待機電流 (Vcell=2.0V) Typ. 0.15uA Max. 0.30uA