dimension (units : mm) descr iption applications f eatures absolute maxim um ratings (t a=25 ? c) recommended oper ating conditions (t a=25 ? c) charging control dr iv er ic f or 1) built-in charging dr iv er circuit 2) built-in charging current monitor circuit 3) built-in bac k-up charging circuit 4) small pac kage ssop-b8 the BH3890FV is a charging ic de v eloped f or a lithium ion batter y (1 cell). bac k-up charging circuit and charging current monitor circuit are included. this ic is directed b y a micro computer controller . ssop-b8 BH3890FV 99w063a p or tab le telephone , phs , equipment in v olving lithium ion batter y no v ember , 1999 maxim um supply v oltage p o w er dissipation oper ating temper ature r ange stor age temper ature r ange v cc max pd t opr tstg v ? c ? c unit mw 300 20 +70 55 +125 limits 0.3 +7.0 ~ ~ ~ * symbol p ar ameter * der ating : 3.0mw/ ? c f or oper ation abo v e t a=25 ? c . p o w er supply v oltage v cc v 5 6 p ar ameter symbol unit min. t yp . max. p or tab le telephone
application circuit electrical characteristics iormax vor vob vccst rrr rrb vob1 vob2 10 4.35 4.15 30 30 maximum output current output voltage control voltage starting up voltage ripple rejection rate ripple rejection rate load regulation input voltage stability 15 4.45 4.20 40 40 5 5 20 4.55 4.25 3.5 30 30 ma v v db db mv mv v vcc (voc2 0.4v) vr= 30dbv , fr=100hz, io=5ma vor 4.0v vr= 20dbv , fr=100hz, io=100ma io=100ma vcc=5.0~6.0v , io=100ma io=1~800ma rrc 30 ripple rejection rate 40 db vr= 20dbv , fr=100hz, vba tvh=4.215v , vba tv=4.2v (chg1=on, chg2=off) (chg1=off , chg2=on) io=5ma conditions symbol unit min. max. iq4 voc1 voc2 linc iq1 iq2 iq3 parameter 2.37 0.44 12.7 output voltage 2 coef ficient of output voltage inclination output voltage 1 t yp. 0 2.57 0.54 13.5 530 1.0 1.4 5 2.77 0.64 14.3 800 1.7 2.1 a v ma ma v chg1=off , chg2=off chg1=on, reg=no load chg2=on, charge section=no load chg1=off , chg2=off , vcc=0v ba tv=4.0v vba tvh vba tv=150mv vba tvh vba tv=0v linc=(voc1 voc2) / 0.15 (current influx into ba tv terminal ) circuit current 1 circuit current 2 circuit current 4 circuit current 3 a (unless otherwise noted, t a=25 ? c, vcc= 5.5v , bpf=20 ~ 20khz)
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