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UB244A Dataheets PDF



Part Number UB244A
Manufacturers UTC
Logo UTC
Description LI-ION BATTERY PROTECTION IC
Datasheet UB244A DatasheetUB244A Datasheet (PDF)

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 .

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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 „ PIN CONFIGURATION Preliminary CMOS IC „ PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 PIN NAME VCC SENSE VC1 VC2 VC3 VSS ICT CO DESCRIPTION Positive power input pin Positive voltage connection pin of battery 1 Negative voltage connection pin of battery 1 Positive voltage connection pin of battery 2 Negative voltage connection pin of battery 2 Positive voltage connection pin of battery 3 Negative voltage connection pin of battery 3 Positive voltage connection pin of battery 4 Negative power input pin Negative voltage connection pin of battery 4 Capacitor connection pin for overcharge detection delay FET gate connection pin for charge „ SERIAL CODE LIST CODE AA AB AC AD AE AF AG AH AI AJ AK AL OVERCHARGE DETECTION VOLTAGE [VCU](V) 4.450±0.050 4.115±0.050 4.350±0.050 4.450±0.050 4.300±0.050 4.400±0.050 4.500±0.050 4.475±0.050 4.350±0.050 4.150±0.050 4.250±0.050 4.050±0.050 OVERCHARGE HYSTERSIS VOLTAGE [VCD](V) 0.380±0.10 0.130±0.04 0.045±0.02 0.045±0.02 0.250±0.07 0.045±0.02 0.380±0.10 0.380±0.10 0.250±0.07 0.250±0.07 0.250±0.07 0.250±0.07 OUTPUT FORM CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” CMOS output active “H” MODEL UB244A UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 11 QW-R502-857.a Free Datasheet http://www.Datasheet4U.com UB244A „ BLOCK DIAGRAM Pr.


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