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UB261L-AI-AG6-R Datasheet(PDF) 10 Page - Unisonic Technologies |
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UB261L-AI-AG6-R Datasheet(HTML) 10 Page - Unisonic Technologies |
10 / 10 page UB261 Preliminary CMOS IC UNISONICTECHNOLOGIESCO.,LTD 10 of 10 www.unisonic.com.tw QW-R502-A27.b TYPICAL APPLICATION CIRCUIT M1 M2 R1=100~470Ω C1=0.1µF R2=1kΩ DO CO VDD VSS VM Battery EB+ EB- UTC UB261 DP Notes: 1. Overdischarge detection voltage must be higher than the threshold voltage of M1 and M2, if not, the M1 may not cut the charging current. If the threshold voltage of M1 equal to or higher than the overdischarge detection voltage is used, discharging may be stopped before overdischarge is detected. 2. Charger voltage must be higher than the withstanding voltage between the gate and source of M1 and M2, if not, M1 and M2 may be destroyed. 3. Resistance of R1 can’t be high, the value is about from 100Ω to 470Ω, If R1 has a high resistance, the voltage between VDD pin and VSS pin may exceed the absolute maximum rating when a charger is connected in reverse since the current flows from the charger to the IC. Insert a resistor of 100Ω or higher as R1 for ESD protection. 4. The capacitance of C1 must not be less than 0.022μF, if not, DO pin may oscillate when load short-circuiting is detected. Be sure to connect a capacitor of 0.022μF or higher to C1, the typical value is about 0.1μF. 5. The resistance of R2 can not be higher than 2kΩ, if not, the charging current may not be cut when a high-voltage charger is connected. UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. |
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