UB24205

UNISONIC TECHNOLOGIES CO., LTD UB24205 Preliminary CMOS IC LITHIUM-ION/POLYMER BATTERY PROTECTION IC DESCRIPTION The UTC UB24205 is a lithium-ion / lithium-polymer rechargeable battery protection IC with internal MOSFETs. It incorporates high accuracy voltage detection circuits and delay circuits. The UTC UB24205 is suitable for protection of single cell lithium-ion / lithium polymer battery packs from overcharge, over discharge and over current. The small package and less required external components make it ideal to be integrated into limited space of battery pack. FEATURES * * * * * * * * * * * * * * Wide supply voltage range: VDD=1.8V~9.0V Ultra-low quiescent current: IDD=3.0μA (VDD=3.9V) Ultra-low power-down current: IPD=0.1μA (VDD=2.0V) Overcharge detection voltage: VOCU=4.250V±0.050V Overcharge release voltage: VOCR=4.055V±0.050V Over discharge release voltage: VODL=2.250V±0.100V Over discharge detection voltage: VODR=2.850V±0.100V Over current detection voltage: VOI1= 0.150V±0.030V Short circuit detection voltage: VOI2=1.35V (Fixed) Charger detection voltage: VCH=-0.7V Reset resistance for over current protection: RSHORT>500kΩ No external MOSFETs Delay times are generated by an internal circuit (External capacitors are unnecessary). Halogen Free ORDERING INFORMATION Ordering Number UB24205G-S08-R Package SOP-8 Packing Tape Reel www.unisonic.com.tw Copyright © 2009 Unisonic Technologies Co., Ltd 1 of 10 QW-R121-019.a UB24205 PIN CONFIGURATION Preliminary CMOS IC BATN PVSS CSI VDD 1 2 3 4 8 7 6 5 DRAIN DRAIN VSS VSS PIN DESCRIPTION PIN NO. 1 2 3 4 5,6 7,8 PIN NAME BATN PVSS CSI VDD VSS DRAIN DESCRIPTION Negative charge input, and load negative input Negative battery Input Current sense Input, and charge detect Positive power input Negative power input Output: the drain terminals of two internal MOSFETs UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 10 QW-R121-019.a UB24205 BLOCK DIAGRAM Preliminary CMOS IC VDD Charger Detector Overdischarge Detector Short circuit Detector CSI Overcharge Detector Oscillator and Divider Over current Detector VSS Control Logic VSS OD PVSS OC BATN DRAIN DRAIN UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 10 QW-R121-019.a UB24205 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 CSI input pin voltage VCSI VDD -15 ~ VDD+0.3 V BATN input pin voltage VBATN VDD -15 ~ VDD +0.3 V Operating Temperature TORP -40 ~ +85 °C Storage Temperature TSTG -40 ~ +125 °C 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, Ta=25°C, 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 Over Current Detection Delay Time Short Circuit Detection Delay Time MOSFET Drain-Source Breakdown Voltage Drain-Source Leakage Current Gate Threshold Voltage Equivalent Drain-Source On-Resistance SYMBOL IDD IPD VDS1 VOCU VOCR VODL VODR VOI1 VOI2 RSHORT VCH TOC TOD TOI1 TOI2 BVDSS IDSS VTH RDS(ON) VDD=3.6V ~ 4.5V VDD=3.6V ~ 2.0V VDD=3.0V VDD=3.0V VGS=0V, IDS=1μA VGS=0V, IDS=250μA VGS=0V, VDS=20.0V VGS=0V, VDS=20.6V VGS=VDS, IDS=1μA VGS=VDS, IDS=250μA VGS=2.5V, IDS=3A VGS=4.5V, IDS=1A VGS=4.5V, IDS=3A TEST CONDITIONS VDD=3.9V VDD=2.0V VDD-VSS 1.8 4.200 4.005 2.150 2.750 0.120 1.0 350 -1.2 0.7 100 5 5 20.0 20.6 1 250 1.4 1.4 45 35 33 4.250 4.055 2.250 2.850 0.150 1.35 500 -0.7 1.3 180 10 10 MIN TYP 3.0 MAX 6.0 0.1 9.0 4.300 4.105 2.350 2.950 0.180 1.75 650 -0.2 1.9 260 20 65 UNIT μA μA V V V V V V V kΩ V S mS mS µS V V μA μA V V mΩ mΩ mΩ VDD=3.0V VDD=3.6V 0.6 0.6 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 10 QW-R121-019.a UB24205 Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 10 QW-R121-019.a UB24205 APPLICATION INFORMATION 1. Normal Condition Preliminary CMOS IC The voltage of the battery connected between VDD and VSS can be monitored by the UTC UB24205.The voltage difference between CSI and VSS can sense the charge and discharge scheme. Under this condition: VODL