UNISONIC TECHNOLOGIES CO., LTD UB209A Preliminary CMOS IC BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION DESCRIPTION The UTC UB209A Series is a protection IC for lithium-ion/lithium polymer rechargeable batteries, including a high precision voltage detection circuit and a delay circuit. The UTC UB209A Series has a transmission function and two types of cell-balance function so that users are also able to configure a protection circuit with series multi-cell. FEATURES * Settable delay time by external capacitor for output pin * High-accuracy voltage detection circuit * Two types of cell-balance function: charge/discharge * Control charging, discharging, cell-balance by CTLC, CTLD pins * Low current consumption: 8.0µA max * Wide range of operation temperature (-40°C~+85°C) ORDERING INFORMATION Ordering Number Lead Free Halogen Free UB209AL-P08-R UB209AG-P08-R Note: xx: Output Voltage, refer to Marking Information. UB209AG-xx-P08-R Package Packing TSSOP-8 Tape Reel (1)Packing Type (1) R: Tape Reel (2)Package Type (2) P08: TSSOP-8 (3)Serial Code (3) xx: Refer to SERIAL CODE LIST (4)Halogen Free (4) L: Lead Free, G: Halogen Free SERIAL CODE LIST Overcharge Overcharge Cell-balance Cell-balance Overdischarge Overdischarge Discharge Detection Release Detection Release Detection Release Model Code Cell-balance Voltage Voltage Voltage Voltage Voltage Voltage Function [VCU](V) [VCL](V) [VBU](V) [VBL](V) [VDL](V) [VDU](V) AA 4.100 4.000 4.050 4.000 2.50 2.70 Yes AB 3.800 3.750 3.650 3.600 2.00 2.50 Yes AC 3.900 3.500 3.550 3.550 2.50 2.70 Yes AD 4.250 4.100 4.200 4.100 2.50 3.00 Yes UB209A AE 4.000 3.900 3.950 3.900 2.50 2.70 Yes AF 4.250 4.100 4.100 4.000 2.75 3.05 Yes AG 3.900 3.600 3.550 3.500 2.00 2.40 Yes AH 3.900 3.700 3.600 3.600 2.50 2.80 No www.unisonic.com.tw Copyright © 2013 Unisonic Technologies Co., Ltd 1 of 9 QW-R502-940.a UB209A Preliminary CMOS IC PIN CONFIGURATION CTLC 1 8 CB CTLD 2 7 CO VDD 3 6 DO CDT 4 5 VSS PIN DESCRIPTION PIN NO. 1 2 3 PIN NAME CTLC CTLD VDD 4 CDT 5 6 7 8 VSS DO CO CB DESCRIPTION Pin for charge control Pin for discharge control Connection pin for input positive power supply, for battery’s positive voltage Connection pin to capacitor for overcharge detection delay, for over discharge detection delay Input pin for negative power supply, Connection pin for battery’s negative voltage Output pin for discharge control (Nch open drain output) Output pin for charge control (Nch open drain output) Output pin for cell-balance control (CMOS output) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 9 QW-R502-940.a UB209A Preliminary CMOS IC BLOCK DIAGRAM CO Logic Control and Delay Circuit 8.31 MΩ DO CDT VDD + CB Cell-balance detection comparator 400 nA + CTLC Overcharge detection comparator 400 nA + CTLD Overdischarge detection comparator VSS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 9 QW-R502-940.a UB209A Preliminary CMOS IC ABSOLUTE MAXIMUM RATING (TA=25°C unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Input Voltage Between VDD and VSS VDS VSS-0.3~VSS+12 V CB Pin Output Voltage VCB VSS-0.3~VDD+0.3 V CDT Pin Voltage VCDT VSS-0.3~VDD+0.3 V DO Pin Output Voltage VDO VSS-0.3~VSS+24 V CO Pin Output Voltage VCO VSS-0.3~VSS+24 V CTLC Pin Input Voltage VCTLC VDD-24~VDD+0.3 V CTLD Pin Input Voltage VCTLD VDD-24~VDD+0.3 V Power Dissipation (Note 2) PD 700 mW Operating Ambient Temperature TOPR -40~+85 °C Storage Temperature TSTG -55~+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. When mounted on board Size: 114.3mm×76.2mm×1.6mm. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 9 QW-R502-940.a UB209A Preliminary CMOS IC ELECTRICAL CHARACTERISTICS (TA=25°C unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Test circuit 1 1 1 1 Overcharge Detection Voltage VCU VCU -0.05 VCU VCU +0.05 V Overcharge Release Voltage VCL VCL-0.05 VCL VCL+0.05 V Cell-balance Detection Voltage VBU VBU-0.05 VBU VBU+0.05 V Cell-balance Release Voltage VBL VBL-0.05 VBL VBL+0.05 V Over Discharge Detection VDL VDL-0.10 VDL VDL+0.10 V 1 Voltage Over Discharge Release VDU VDU-0.10 VDU VDU+0.10 V 1 Voltage CDT Pin Resistance (Note 1) RCDT VDS=3.5V, VCDT=0V 4.76 8.31 10.9 MΩ 2 CDT Pin Detection Voltage VCDET VDS=3.5V VDS×0.65 VDS×0.70 VDS×0.75 V 3 Output Voltage of CO, Operating Voltage Between 1.5 8.0 V VDSOP DO, CB Fixed VDD and VSS CTLC Pin H Voltage VCTLCH VDS=3.5V VDS×0.55 VDS×0.90 V 4 CTLD Pin H Voltage VCTLDH VDS=3.5V VDS×0.55 VDS×0.90 V 4 CTLC Pin L Voltage VCTLCL VDS=3.5V VDS×0.10 VDS×0.45 V 4 CTLD Pin L Voltage VCTLDL VDS=3.5V VDS×0.10 VDS×0.45 V 4 Current Consumption During IOPE VDS=3.5V 3.5 8.0 µA 5 Operation (Note 2) Source Current CTLC (Note 2) ICTLCH VDS=3.5V, VCTLC=0V 300 400 500 nA 6 Source Current CTLD (Note 2 ICTLDH VDS=3.5V, VCTLD=0V 300 400 500 nA 6 Source Current CB ICBH VCB=4.0V, VDS=4.5V 30 µA 7 Sink Current CB ICBL VCB=0.5V, VDS=3.5V 30 µA 7 Sink Current CO ICOL VCO=0.5V, VDS=3.5V 30 µA 7 Leakage Current CO ICOH VCO=24V, VDS=4.5V 0.2 µA 8 Sink Current DO IDOL VDO=0.5V, VDS=3.5V 30 µA 7 Leakage Current DO IDOH VDO=24 V, VDS=1.8V 0.2 µA 8 Notes:1.In the UTC UB209A Series, users are able to set delay time for the output pins. By using the following formula, delay time is calculated with the value of CDT pin’s resistance in the IC (RCDT) and the value of capacitor set externally at the CDT pin (CCDT). tD [s]=-ln(1-VCDET /VDS)×CCDT [µF]×RCDT [MΩ] =-ln (1-0.7(Typ.) )×CCDT [µF]×8.31MΩ (Typ.) =10.0MΩ(Typ.)×CCDT [µF] In case of the capacitance of CDT pin CCDT=0.01µF, the output pin delay time tD is calculated by using the above formula and as follows. tD [s]=10.0MΩ(Typ.)×0.01µF=0.1s(Typ.) Test RCDT and the CDT pin detection voltage (VCDET) by test circuits shown in this datasheet after applying the power supply while pulling-down the CTLC, CTLD pins to the level of VSS pin outside the IC. 2.In case of using CTLC, CTLD pins pulled-down to the level of VSS pin externally, the current flows into the VDD pin (IDD) is calculated by the following formula. IDD=IOPE+ICTLCH+ICTLDH UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 9 QW-R502-940.a UB209A Preliminary CMOS IC TEST CIRCUIT CTLC CB CTLD CO VDD DO CDT UTC UB209A CTLC CB CTLD CO VDD DO UTC UB209A VSS CDT VSS V V A V COM COM Figure 1. Test Circuit 1 100 kΩ www.unisonic.com.tw 100 kΩ 100 kΩ UNISONIC TECHNOLOGIES CO., LTD Figure 2. Test Circuit 2 6 of 9 QW-R502-940.a UB209A TEST CIRCUIT(Cont.) OPERATION Preliminary CMOS IC Figure 9 shows the operation transition of UTC UB209A. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 9 QW-R502-940.a UB209A Preliminary CMOS IC 1. Normal Status In the UTC UB209A, both of CO and DO pin get the VSS level; the voltage between VDD and VSS (VDS) is more than the overdischarge detection voltage (VDL), and is less than the overcharge detection voltage (VCU) and respectively, the CTLC pin input voltage (VCTLC)<the CTLC pin voltage “H” (VCTLCH), the CTLD pin input voltage (VCTLD)<the CTLD pin voltage “H” (VCTLDH). This is the normal status. 2. Overcharge Status In the UTC UB209A, the CO pin is in high impedance; when VDS gets VCU or more, or VCTLC gets VCTLCH or more. This is the overcharge status. If VDS gets the overcharge release voltage (VCL) or less, and VCTLC gets the CTLC pin voltage “L” (VCTLCL) or less, the UTC UB209A releases the overcharge status to return to the normal status. 3. Overdischarge Status In the UTC UB209A, the DO pin is in high impedance; when VDS gets VDL or less, or VCTLD gets VCTLDH or more. This is the overdischarge status. If VDS gets the overdischarge release voltage (VDU) or more, and VCTLD gets the CTLD pin voltage “L” (VCTLDL) or less, the UTC UB209A releases the overdischarge status to return to the normal status. 4. Cell-balance Function In the UTC UB209A, the CB pin gets the level of VDD pin; when VDS gets the cell-balance detection voltage (VBU) or more. This is the charge cell-balance function. If VDS gets the cell-balance release voltage (VBL) or less again, the UTC UB209A sets the CB pin the level of VSS pin. In addition, the CB pin gets the level of VDD pin; when VDS is more than VDL, and VCTLD is VCTLDH or more. This is the discharge cell-balance function. If VCTLD gets VCTLDL or less, or VDS is VDL or less again, the UTC UB209A sets the CB pin the level of VSS. 5. Delay Circuit In the UTC UB209A, users are able to set delay time which is from detection of changes in VDS, VCTLC, VCTLD to output to the CO, DO, CB pin. For example in the detection of overcharge status, when VDS exceeds VCU, or VCTLC gets VCTLCH or more, charging to CCDT starts via RCDT. If the voltage between CDT and VSS (VCDT) reaches the CDT pin detection voltage (VCDET), the CO pin is in high impedance. The output pin delay time tD is calculated by the following formula. tD [s]=10.0MΩ (Typ.)×CCDT [µF] The electric charge in CCDT starts to be discharged when the delay time has finished. The delay time that users have set for the CO pin, as seen above, is settable for each output pin DO, CB. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 9 QW-R502-940.a UB209A Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT EB+ 1 MΩ 1 MΩ 510 kΩ 510 kΩ 470 Ω CO1 VDD1 DO1 CDT1 0.01 µF UTC UB209A CB1 (1) 0.1 µF BAT1 CTLC1 CTLD1 1 kΩ VSS1 1 kΩ 470 Ω CO2 VDD2 DO2 CDT2 0.1 µF UTC UB209A CB2 (2) BAT2 CTLC2 CTLD2 1 kΩ VSS2 1 kΩ 470 Ω CO3 VDD3 DO3 CDT3 UTC UB209A (3) CB3 1 MΩ BAT3 CTLC3 1 MΩ CTLD3 CFET 0.1 µF VSS3 DFET 1 kΩ EB- 1 kΩ Figure 10 Caution 1. The above constants may be changed without notice. 2. The example of connection shown above and the constant do not guarantee proper operation. Perform thorough evaluation using the actual application to set the constant. UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 9 of 9 QW-R502-940.a