UB244A

UNISONIC TECHNOLOGIES CO., LTD UB244A Preliminary CMOS IC LI-ION BATTERY PROTECTION IC FOR 1-CELL TO 4-CELL PACK (SECONDARY PROTECTION) „ DESCRIPTION The UTC UB244A 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 UB244A 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): 0.38V±0.10V, 0.25V±0.07V, 0.13V±0.04V, 0.045V±0.02V, None * Delay times for overcharge detection can be set by an external capacitor * CMOS output active “H” * Wide operating voltage range 3.6V to 24V * Wide operating temperature range −40°C to +85°C * Low current consumption: 1.5μA typ. (+25°C) at 3.5V for each cell „ ORDERING INFORMATION Package MSOP-8 Packing Tape Reel Ordering Number Lead Free Halogen Free UB244AL-xx-SM1-R UB244AG-xx-SM1-R Note: xx: Output Voltage, refer to Marking Information. UB244AG-xx-SM1-R (1)Packing Type (2)Package Type (3)Output Voltage Code (4)Halogen Free (1) R: Tape Reel (2) SM1: MSOP-8 (3) xx: Refer to Marking Information (4) G: Halogen Free, L: Lead Free www.unisonic.com.tw Copyright © 2012 Unisonic Technologies Co., Ltd 1 of 11 QW-R502-857.a Free Datasheet http://www.Datasheet4U.com UB244A „ P...