UNISONIC TECHNOLOGIES CO., LTD UB209B Preliminary CMOS IC BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION DESCRIPTION The UTC UB209B 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 UB209B 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. TSSOP-8 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 UB209BL-P08-R UB209BG-P08-R Note: xx: Output Voltage, refer to Marking Information. UB209BG-xx-P08-R Package Packing TSSOP-8 Tape Reel (1)Packing Type (1) R: Tape Reel (2)Package Type (2) P08: TSSOP-8 (3)Output Voltage Code (3) xx: Refer to Marking Information (4)Halogen Free (4) Halogen Free, L: Lead 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 UB209B 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-R502-943.a UB209B 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 (Pch open drain output) Output pin for charge control (Pch open drain output) Output pin for cell-balance control (CMOS output) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 9 QW-R502-943.a UB209B Preliminary CMOS IC BLOCK DIAGRAM CO Logic Control and Delay Circuit 8.31 MΩ CDT DO VDD + CB Cell-balance detection comparator + CTLC Overcharge detection comparator 400 nA + CTLD Overdischarge detection comparator VSS UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 400 nA 3 of 9 QW-R502-943.a UB209B 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 VDD-24~VDD+0.3 V CO Pin Output Voltage VCO VDD-24~VDD+0.3 V CTLC Pin Input Voltage VCTLC VSS-0.3~VSS+24 V CTLD Pin Input Voltage VCTLD VSS-0.3~VSS+24 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: 114.3mm×76.2mm×1.6mm UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 9 QW-R502-943.a UB209B Preliminary CMOS IC ELECTRICAL CHARACTERISTICS (TA=25°C unless otherwise specified) PARAMETER Overcharge Detection Voltage Overcharge Release Voltage Cell-balance Detection Voltage Cell-balance Release Voltage Over Discharge Detection Voltage Over Discharge Release Voltage CDT Pin Resistance (Note 1) CDT Pin Detection Voltage (Note 1) Operating Voltage Between VDD and VSS CTLC Pin H Voltage CTLD Pin H Voltage CTLC Pin L Voltage CTLD Pin L Voltage Current Consumption During Operation (Note 2) MIN TYP MAX UNIT VCU VCL VCU -0.05 VCL-0.05 VCU VCL VCU +0.05 VCL+0.05 V V Test circuit 1 1 VBU VBU-0.05 VBU VBU+0.05 V 1 VBL VBL-0.05 VBL VBL+0.05 V 1 VDL VDL-0.10 VDL VDL+0.10 V 1 VDU VDU-0.10 VDU VDU+0.10 V 1 4.76 8.31 10.9 MΩ 2 V 3 SYMBOL TEST CONDITIONS RCDT VDS=3.5V, VCDT=0V VCDET VDS=3.5V VDSOP VCTLCH VCTLDH VCTLCL VCTLDL IOPE Output Voltage of CO, DO, CB Fixed VDS=3.5V VDS=3.5V VDS=3.5V VDS=3.5V VDS=3.5V VDS×0.65 VDS×0.70 VDS×0.75 1.5 8.0 V VDS×0.55 VDS×0.55 VDS×0.10 VDS×0.10 VDS×0.90 VDS×0.90 VDS×0.45 VDS×0.45 V V V V 4 4 4 4 8.0 µA 5 3.5 VDS=3.5V, 300 400 500 nA 6 VCTLC=3.5V VDS=3.5V, 300 400 500 nA 6 Sink Current CTLD (Note 2) ICTLDL VCTLD=3.5V 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 Source Current CO ICOH VCO=3.0V, VDS=3.5V 30 µA 7 Leakage Current CO ICOL VCO=24V, VDS=4.5V 0.2 µA 8 Source Current DO IDOH VDO=3.0V, VDS=3.5V 30 µA 7 Leakage Current DO IDOL VDO=24V, VDS=1.8V 0.2 µA 8 Notes:1. In the UTC UB209B 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 VDD pin outside the IC. 2. In case of using CTLC, CTLD pins pulled-down to the level of VDD pin externally, the current flows into the VSS pin (ISS) is calculated by the following formula. ISS=IOPE+ICTLCL+ICTLDL Sink Current CTLC (Note 2) ICTLCL UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 9 QW-R502-943.a UB209B Preliminary CMOS IC TEST CIRCUIT CTLC CB CTLD CO VDD CDT UTC UB209B 100 kΩ 100 kΩ DO CTLC CB CTLD CO VDD DO UTC UB209B VSS CDT VSS V V A V COM COM Figure 1. Test Circuit 1 Figure 2. Test Circuit 2 www.unisonic.com.tw 100 kΩ 100 kΩ UNISONIC TECHNOLOGIES CO., LTD 6 of 9 QW-R502-943.a UB209B Preliminary CMOS IC TEST CIRCUIT(Cont.) A CTLC CTLC CB CTLD UTC CO UB209A DO VDD CTLD UTC CO UB209A DO VDD CDT COM VSS A CB A A Figure 7. Test Circuit 7 A CDT VSS COM Figure 8. Test Circuit 8 OPERATION Figure 9 shows the operation transition of UTC UB209B. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 9 QW-R502-943.a UB209B Preliminary CMOS IC 1. Normal Status In the UTC UB209B, both of CO and DO pin get the VDD 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 “L” (VCTLCL), the CTLD pin input voltage (VCTLD) > the CTLD pin voltage “L” (VCTLDL). This is the normal status. 2. Overcharge Status In the UTC UB209B, the CO pin is in high impedance; when VDS gets VCU or more, or VCTLC gets VCTLCL or less. This is the overcharge status. If VDS gets the overcharge release voltage (VCL) or less, and VCTLC gets the CTLC pin voltage “H” (VCTLCH) or more, the UTC UB209B releases the overcharge status to return to the normal status. 3. Overdischarge Status In the UTC UB209B, the DO pin is in high impedance; when VDS gets VDL or less, or VCTLD gets VCTLDL or less. This is the overdischarge status. If VDS gets the overdischarge release voltage (VDU) or more, and VCTLD gets the CTLD pin voltage “H” (VCTLDH) or more, the UTC UB209B releases the overdischarge status to return to the normal status. 4. Cell-balance Function In the UTC UB209B, 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 UB209B 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 VCTLDL or less. This is the discharge cell-balance function. If VCTLD gets VCTLDH or more, or VDS is VDL or less again, the UTC UB209B sets the CB pin the level of VSS. 5. Delay Circuit In the UTC UB209B, 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 less, 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-R502-943.a UB209B Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT EB+ 1 kΩ CFET 1 kΩ DFET CTLD1 1 MΩ 1 MΩ VDD1 CTLC1 CB1 UTC UB209B (1) DO1 CDT1 CO1 1 kΩ VSS1 BAT1 0.1 µF 470 Ω 1 kΩ CTLD2 VDD2 CTLC2 CB2 UTC UB209B (2) DO2 CDT2 1 kΩ CO2 0.1 µF VSS2 470 Ω 1 kΩ CTLD3 BAT2 VDD3 CTLC3 CB3 UTC UB209B (3) 0.01 µF DO3 CDT3 CO3 EB- 510 kΩ 510 kΩ 1 MΩ 1 MΩ VSS3 BAT3 0.1 µF 470 Ω 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-R502-943.a