UB242

UNISONIC TECHNOLOGIES CO., LTD UB242 Preliminary CMOS IC LITHIUM-ION/POLYMER BATTERY PROTECTION IC DESCRIPTION UTC UB242 is a series of lithium-ion / lithium-polymer rechargeable battery protection ICs incorporating high accuracy voltage detection circuits and delay circuits. UTC UB242 is suitable for protection of single cell lithium-ion / lithium polymer battery packs from overcharge, over discharge and over current. The ultra-small package and less required external components make it ideal to integrate the UTC UB242 into the limited space of battery pack. 6 5 4 1 2 3 FEATURES * * * * * * * * * * Wide supply voltage range: Ultra-low quiescent current: Ultra-low power-down current: Overcharge detection voltage: Overcharge release voltage: Over discharge detection voltage : Over discharge release voltage: Over current detection voltage: Short circuit detection voltage: Charger detection voltage: Reset resistance for over current protection: VDD=1.8V~9.0V IDD=3.0μA (VDD=3.9V) IPD=0.1μA (VDD=2.0V) VOCU=4.200V~4.400V VOCR=4.005V~4.225V VODL=2.15V~3.00V VODR=2.32V~3.10V VOI1=0.05V~0.20V VOI2=1.35V (Fixed) VCH=-0.7V RSHORT＞500kΩ SOT-26 * Delay times are generated by an internal circuit. (External capacitors are unnecessary.) * Halogen Free ORDERING INFORMATION Ordering Number UB242xG-AG6-R Package SOT-26 Packing Tape Reel MARKING www.unisonic.com.tw Copyright © 2009 Unisonic Technologies Co., Ltd 1 of 13 QW-R502-307.c UB242 PIN CONFIGURATION Preliminary CMOS IC PIN DESCRIPTION PIN NO 1 2 3 4 5 6 PIN NAME OD CSI OC DS VDD VSS DESCRIPTION For discharge control: FET gate connection pin For current sense Input pin, and charge detect For charge control :FET gate connection pin For reduce delay time: test pin Positive power input Negative power input SERIAL CODE LIST Overcharge Detection Voltage [VOCU](V) 4.325±0.050 4.350±0.050 4.325±0.050 4.300±0.050 4.300±0.050 4.275±0.050 4.280±0.050 4.250±0.050 Overcharge Release Voltage [VOCR](V) 4.075±0.050 4.150±0.050 4.075±0.050 4.080±0.050 4.080±0.050 4.175±0.050 4.175±0.050 4.055±0.050 Over discharge Detection Voltage [VODL](V) 2.50±0.10 2.30±0.10 2.50±0.10 2.50±0.10 2.50±0.10 2.30±0.08 2.90±0.10 2.25±0.10 Over discharge Release Voltage [VODR](V) 2.90±0.10 3.00±0.10 2.90±0.10 2.90±0.10 2.90±0.10 2.45±0.08 3.00±0.10 2.85±0.10 Over Current Detection Voltage [VOI1](mV) 100±30 100±30 150±30 150±30 100±30 100±30 150±30 150±30 Model Code A B C D E F G H UB242 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 13 QW-R502-307.c UB242 BLOCK DIAGRAM Preliminary CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 13 QW-R502-307.c UB242 Preliminary CMOS IC ABSOLUTE MAXIMUM RATING (VSS=0V, Ta=25°С unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Input voltage between VDD and VSS (Note2) VDD VSS-0.3 ~ VSS+12 V OC output pin voltage VOC VDD-15 ~ VDD+0.3 V OD output pin voltage VOD VSS-0.3 ~ VDD+0.3 V CSI input pin voltage VCSI VDD-15 ~ VDD+0.3 V DS input pin voltage VDS VSS-0.3 ~ VDD+03 V Operating Temperature TORP -40 ~ +85 °С Storage Temperature TSTG -40 ~ +125 °С Note: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. Pulse (μsec) noise exceeding the above input voltage (VSS+12V) may cause damage to the IC. ELECTRICAL CHARACTERISTICS (VSS=0V, DS=Floating, Ta=25°С unless otherwise specified) PARAMETER CURRENT CONSEMPTION Supply Current Power-Down Current OPERATING VOLTAGE Operating Input Voltage DETECTION VOLTAGE Overcharge Detection Voltage Overcharge Release Voltage Overdischarge Detection Voltage Overdischarge Release Voltage Over Current Detection Voltage Short Circuit Detection Voltage Reset Resistance For Over Current Protection Charger Detection Voltage DELAY TIME Overcharge Detection Delay Time Overdischarge Detection Delay Time SYMBOL IDD IPD VDS1 VOCU VOCR VODL VODR VOI1 VOI2 RSHORT VCH TOC TOD VDD=3.6V to4.5V, DS=Floating VDD=3.6V to 4.5V, VDS=VDD VDD=3.6V to 2.0V, DS=Floating VDD=3.6V to 2.0V, VDS=VDD VDD=3.0V VDD=3.0V VDD=3.0V VDD=3.6V TEST CONDITIONS VDD=3.9V VDD=2.0V VDD-VSS 1.8 VOCU -0.050 VOCR -0.050 VODL -0.100 VODR -0.100 VOI1 -0.030 1.0 350 -1.2 0.7 10 100 6 5 5 VOCU VOCR VODL VODR VO/1 1.35 500 -0.7 1.3 20 180 11 10 10 MIN TYP 3.0 MAX 6.0 0.1 9.0 VOCU +0.050 VOCR +0.050 VODL +0.100 VODR +0.100 VOI1 +0.030 1.75 650 -0.2 1.9 30 260 17 20 50 UNIT μA μA V V V V V V V kΩ V s ms ms ms ms µs V V V V Over Current Detection Delay Time TOI1 Short Circuit Detection Delay Time TOI2 OTHER OC Pin Output “H” Voltage VOH1 VDD=3.9V, IOH=-50μA 3.4 3.7 OC Pin Output “L” Voltage VOL1 VDD=4.5V, CSI=0V 0.1 0.5 OD Pin Output “H” Voltage VOH2 VDD=3.9V, IOH=-50μA 3.4 3.7 OD Pin Output “L” Voltage VOL2 VDD=2.0V, IOL=50μA 0.1 0.5 Note: If VDS=VDD, the delay time will be reduced, and the test time for VOCU or VODL will also be reduced. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 13 QW-R502-307.c UB242 Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 13 QW-R502-307.c UB242 DESCRIPTION OF OPERATION 1. Normal Condition Preliminary CMOS IC The voltage of the battery connected between VDD and VSS can be monitored by the UB242.The voltage difference between CSI and VSS can sense the charge and discharge scheme. Under this condition: VODL