UNISONIC TECHNOLOGIES CO.
, LTD UB240 Preliminary CMOS IC LION BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)  DESCRIPTION The UTC UB240 Series is secondary protection IC for 1-, 2-, 3-, or 4-Cell lithium-ion rechargeable battery packs, and incorporates a high-accuracy voltage detection circuit.
The UTC UB240 Series also includes a high accuracy delay circuit for over voltage detection time can be set by an external capacitor.
 FEATURES * High-accuracy voltage detection circuit for each cell * Overcharge detection voltage n (n=1 to 4): 4.
05V to 4.
50V (in 50mV steps) * Overcharge hysteresis voltage n (n=1 to 4): 0.
25V±0.
07V, 0.
30V±0.
10V * Delay times for...

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