EC9525 Datasheet | E-CMOS

.. Preliminary LI-ION PROTECTION IC WITH POWER MOS Features Low supply current High accuracy detector Threshold Supply current Standby current (after detecting over-discharge) Over-charge detector(Topt=25ºC) Over-charge detector (Topt=0 to 50ºC) Over-discharge detector Variety of detector threshold Built in protection circuit Output delay of over charge Output delay of over-discharg Package Over-charge detector threshold Over-discharge detector threshold Excess current protection Accuracy Time delay at VDD=4.3V VDD=2.4V with built-in capacitor TYP. 3.0u A TYP. 0.25u A +/- 25m V +/- 30m V +/- 3.0% 4.0V to 4.4V step of 0.005V 2.0V to 3.0V step of 0.005V 0.04V to 0.32V step of 0.04V ±20% 1.0S 10m S SOP-8/8-pin Page 1 of 9 DR18EV103B-Ver2.5 Preliminary LI-ION PROTECTION IC WITH POWER MOS General Description The EC9525 is protection IC with Power MOS for over-charge/discharge of rechargeable one-cell Lithium-ion(Li+) excess load current, further include a short circuit protector for preventing large external short circuit current. Each of these IC is posed of three voltage detectors, a reference unit, a delay circuit, a short circuit protector, a logic circuit and two N-type Power MOS. When charging voltage crosses the detector threshold from a low value to value higher than VDET1, the output of Cout pin, the output of over-charge detector/VD1, switches to low level, charger’s negative pin level. After detecting over-charge the VD1 can be reset and the output of Cout bees high when the VDD voltage is ing down to a level lower than “VREL1”, or when a kind of loading is connected to VDD after a charger is disconnected from the battery pack while the VDD level is in between “VDET1” and “VREL1” in the EC9525. The output of Dout pin, the output of over-discharge detector/VD2, switches to low level after internally fixed delay time passed, when discharging voltage crosses the detector threshold from a high value lower than VDET2....