r5402n series li-ion/polymer 1cell protector li-ion/polymer 1cell protector the r5402nx series are high input voltage cmos-based protection ics for over-charge/discharge of rechargeable one-cell lithium-ion (li-ion) / lithium polymer excess load current, further include a short circuit protector for preventing large exte rnal short circuit current and excess charge/discharge-current. each of these ics is composed of four voltage detectors, reference units, a delay circuit, a short circuit protector, an oscill ator, a counter, and a logic circuit. sot-23-5 package is available. features ? supply voltage (v dd ) ? charger negative input voltage (v-) ? operating input voltage range (v dd ) ? supply current (i dd ) ? standby current (i s ) 12v (absolute maximum rating) -35v (absolute maximum rating) 1.5v to 5.0v typ. 4.0 a max. 0.1 a (c version) max. 2.0 a (b, d version) ? excess discharge-current (v det 3 ) ? excess charge-current (v det 4 ) detector threshold range detector threshold accuracy output delay time (tv det3 ) detector threshold range detector threshold accuracy output delay time (tv det4 ) 0.05v to 0.20v (0.005v steps) 15mv typ. 6ms or 12ms -0.1v 30mv typ. 8ms or 16ms ? short protection voltage (v short ) output delay time (t short ) typ. 0.8v typ. 200 s or 300 s ? over-charge (v det1 ) ? over-discharge (v det2 ) detector thre shold range detector threshold accuracy output delay time (tv det 1 ) detector thre shold range detector threshold accuracy output delay time (tv det 2 ) 4.0v to 4.5v (0.005v steps) 25mv (25 c) 30mv (-5 to 55 c) typ. 1.0s or 0.25s 2.0v to 3.0v (0.1v steps) 2.5% typ. 20ms ? 0v-battery charge ? package available sot-23-6 block diagrams r5402nxxxxb r5402nxxxxc r5402nxxxxd v ss v dd oscillator counter logic circuit delay logic circuit d out c out v- short detector level shift dc circuit vd1 vd2 vd4 vd3 v ss v dd oscillator counter logic circuit delay logic circuit d out c out v- short detector level shift dc circuit vd1 vd2 vd4 vd3 v ss v dd oscillator counter logic circuit delay logic circuit d out c out v- short detector level shift dc circuit vd1 vd2 vd4 vd3 selection guide package quantity per reel part no. sot-23-6 3,000 pcs r5402n . xxx . $ . ? -tr-fe . xxx : serial number for the r5402 series designating input four threshold for over-charge, over-discharge, excess discharge-current, and excess charge-current detectors . $ . : designation of output delay time option of over-charge, excess discharge-current, and excess charge-current. ( . c . ) tv det1 =1.0s, tv det3 =12ms, tv det4 =16ms ( . e . ) tv det1 =1.0s, tv det3 =6ms, tv det4 =8ms ( . f . ) tv det1 =0.25s, tv det3 =12ms, tv det4 =16ms ( . k . ) tv det1 =1.0s, tv det3 =12ms, tv det4 =8ms . ? : designation of version symbols ( . b . ) with latch function after over-charge, auto release after over-discharge ( . c . ) with latch function after over-charge and over-discharge ( . d .. ) auto release after over-charge and over-discharge package (top view) sot-23-6 6 5 4 1 2 3 1d out 2 v- 3c out 4 nc 5v dd 6v ss applications ? li-ion / li polymer protector of over-c harge, over-discharge, excess discharge-curre nt, excess charge-current for battery pack ? high precision protectors for cell- phones and any other gadgets using on board li-ion / li polymer battery
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