LC709205F ONSEMI | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 24
Technical content
Features
- HG−CVR2 Algorithm Technology ♦ Accurate RSOC of Aging Battery ♦ Stable Gauging by Automatic Convergence of Error ♦ Immediate Accurate Gauging after Battery Insertion ♦ Eliminates Learning Cycle
- Low Power Consumption ♦ 2 /C0109A Operational Mode Current
- Improvement of the Battery Safety by Alarm Function RSOC / V oltage / Current / Temperature
- Battery Lifetime Measurement SOH / Cycle Count / Operating Time Full Charge Capacity / Remaining Capacity
- Remaining Time Estimation Time to Full / Time to Empty
- Three Temperature Inputs ♦ Inputs to sense two NTC Thermistors ♦ Via I2C
- Detection of Battery Operating Conditions Charging / Discharging
- Detection of Battery Insertion
- I2C Interface (supported up to 400 kHz)
- These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant www.onsemi.com MARKING DIAGRAM See detailed ordering and shipping information on page 22 of this data sheet.
ORDERING INFORMATION
WLCSP12 1.48x1.91x0.51 CASE 567XE 205 AWLYW 205 = 20501 (LC709205FXE −01TBG) A = Assembly Site WL = Wafer Lot Number YW = Assembly Start Week
Applications
- Wearables / IoT Devices
- Smartphones/PDA Devices
- Digital Cameras
- Portable Game Players
- USB-related Devices
Table 1. PIN FUNCTION A1 SDA I/O I2C Data pin (open drain). Pull−up must be done externally. B1 SCL I/O I2C Clock pin (open drain). Pull−up must be done externally. C1 ALARMB O This pin indicates alarm by low output (open drain). Pull−up must be done externally. Keep this pin OPEN when not in use. A2 VSS − Connect this pin to the battery’s negative (−) pin. B2 TEST2 I Connect this pin to the battery’s negative (−) pin. C2 TEST1 I Connect this pin to the battery’s negative (−) pin. A3 REG O Regulator output. Connect this pin to the capacitor. temperature (0x30)”. Keep this pin OPEN when not in use. C3 SRP I Connect this pin to the sense resistor’s positive (+) pin. A4 VDD − Connect this pin to the battery’s positive (+) pin. temperature (0x08)”. Keep this pin OPEN when not in use. C4 SRN I Connect this pin to the sense resistor’s negative (−) pin. Table 2. ABSOLUTE MAXIMUM RATINGS (TA = 25°C, VSS = 0 V) should not be assumed, damage may occur and reliability may be affected. Table 3. ALLOWABLE OPERATING CONDITIONS (TA = −40 to +85°C, VSS = 0 V) the Recommended Operating Ranges limits may affect device reliability.
Table 4. ELECTRICAL CHARACTERISTICS (TA = −40 to +85°C, VSS = 0 V, Typ: 4 V, TA = 25°C) performance may not be indicated by the Electrical Characteristics if operated under different conditions.
Table 6. FUNCTION OF REGISTERS after power on reset, see Figure 9. estimated state of the battery.
Table 6. FUNCTION OF REGISTERS (continued)
- The initial value of User ID is set on IC at ID Writing process. Please refer to an application note about how to write.
Table 10. BATTERY PROFILE VS. REGISTER
04 UR18650ZY (Panasonic) 0x01
05 ICR18650−26H (SAMSUNG) 0x02
Figure 16. Alarm Low Cell Voltage bits are set to 0 the LSI stops the measurement. is started with 0 after battery insertion. Figure 17. Figure 17. CycleCount
once will keep 1 even if the alarm conditions are resolved. to 0 after previous power−on reset. Table 11. BATTERY STATUS
14 Reserved − 0
13 Over Charging
12 High Temperature /C0110 0
11 Low Cell Voltage /C0110 0
10 Over Discharging
9 Low RSOC /C0110 0
8 Low Temperature /C0110 0
6 Discharging − 1
5 Reserved − 0
4 Reserved − 0
3 Reserved − 0
2 Reserved − 0
1 Reserved − 0
0 Reserved − 0
The register contains identity of installed battery profile. charging decreases to 0.02C. to battery profile and this register value. Figure 18. RSOC (0x0D) is rescaled so that it is 0% when Figure 18. Empty Cell Voltage and ITE Offset in Figure 19. Rescaled RSOC by ITE Offset and
www.onsemi.com ITE Offset (0x1E) This register is referred to transform ITE (0x0F) to RSOC (0x0D). RSOC will be rescaled so that it is 0% when ITE (0x0F) is equal to this register. See Figure 19. Refer to Termination current rate section about the Full charge offset in the figure. There are two methods to update this register. One is to write it directly. The other is an automatic update by Empty Cell V oltage (0x1D). Refer to Empty Cell V oltage section about it. Alarm High Cell Voltage (0x1F) The ALARMB pin will output low level and the bit 15 of BatteryStatus register (0x19) register will be set to 1 when Cell Voltage (0x09) rises than this value. ALARMB pin will be released from low when Cell V oltage falls below this value. But the bit 15 keeps 1 until it is written or Power−on reset. Set this register to 0 to disable. Alarm Low Temperature (0x20) The ALARMB pin will output low level and the bit 8 of BatteryStatus register (0x19) will be set to 1 when Cell Temperature (0x08) falls below this value. ALARMB pin will be released from low when Cell Temperature rises than this value. But the bit 8 keeps 1 until it is written or Power−on reset. Set this register or Bit 0 of Status Bit (0x16)to 0 to disable. Alarm High Temperature (0x21) The ALARMB pin will output low level and the bit 12 of BatteryStatus register (0x19) will be set to 1 when Cell Temperature (0x18) rises than this value. ALARMB pin will be released from low when Cell Temperature falls below this value. But the bit 12 keeps 1 until it is written or Power−on reset. Set this register or Bit 0 of Status Bit (0x16) to 0 to disable. Alarm Over Charging Current (0x22) The ALARMB pin will output low level and the bit 13 of BatteryStatus register (0x19) will be set to 1 when Dynamic Cell current (0x33) rises than this value. ALARMB pin will be released from low when Dynamic Cell current falls below this value. But the bit 13 keeps 1 until it is written or Power−on reset. Set this register to 0 to disable. Alarm Over Discharging Current (0x23) The ALARMB pin will output low level and the bit 10 of BatteryStatus register (0x19) will be set to 1 when Dynamic Cell current (0x33) falls below this value. ALARMB pin will be released from low when Dynamic Cell current falls below this value. But the bit 10 keeps 1 until it is written or Power−on reset. Set this register to 0 to disable. TotalRuntime (0x24, 0x25) This register contains an elapsed time of Operational mode after battery insertion in minutes. The LSI stops the counting when it reaches 0xFFFFFF. When this register is written it starts counting from the written value. It doesn’t count in Sleep mode. Accumulated Temperature (0x26, 0x27) In Operational mode this register accumulates Cell Temperature (0x08) value per minute. It stops the accumulating when it reaches 0xFFFFFFFF. When this register is written it starts accumulating from the written value. It doesn’t count in Sleep mode. Accumulated RSOC (0x28, 0x29) In Operational mode this register accumulates RSOC (0x0D) value per minute. It stops the accumulating when it reaches 0xFFFFFFFF. When this register is written it starts accumulating from the written value. It doesn ’t count in Sleep mode. Maximum Cell Voltage (0x2A) The maximum Cell V oltage (0x09) is stored. This register will be updated whenever the higher voltage is detected. If the lower voltage is written it can detect the higher voltage than the written voltage again. Minimum Cell Voltage (0x2B) The minimum Cell V oltage (0x09) is stored. This register will be updated whenever the lower voltage is detected. If the higher voltage is written it can detect the lower voltage than the written voltage again. Maximum Cell Temperature (TSENSE1) (0x2C) The maximum Cell Temperature (0x08) is stored. This register will be updated whenever the higher temperature is detected. If the lower temperature is written it can detect the higher temperature than the written temperature again. Minimum Cell Temperature (TSENSE1) (0x2D) The minimum Cell Temperature (0x08) is stored. This register will be updated whenever the lower temperature is detected. If the higher temperature is written it can detect the lower temperature than the written temperature again. Maximum Cell Current (0x2E) The maximum Dynamic Cell current (0x33) is stored. It is the maximum charging current. This register will be updated whenever the higher current is detected. If the lower current is written it can detect the higher current than the written current again. Minimum Cell Current (0x2F) The minimum Dynamic Cell current (0x33) is stored. It is the maximum discharging current. This register will be updated whenever the lower current is detected. If the higher current is written it can detect the lower current than the written current again.
Ambient Temperature is not used for battery gauging. examples of Sense resistance. of health. Set it in starting flow. See Figure 22 and 23. Table 12. EXAMPLES OF SENSE RESISTANCE 100%. It decreases by deterioration of the battery. dividing by sense resistance. This register contains Remaining capacity in 0.1 mAh. application note about how to write the NVM. voltage is essential for accurate voltage measurement. with little temperature dependency. the current is determined by the following formulas.
www.onsemi.com How to Identify Aging By repeating discharge/charge, internal impedance of a battery will gradually increase, and the Full Charge Capacity (FCC) will decrease. In coulomb counting method RSOC is generally calculated using the FCC and the Remaining Capacity (RM). RSOC /C0043RM FCC Then the decreased FCC must be preliminarily measured with learning cycle. But HG−CVR2 can measure the RSOC of deteriorated battery without learning cycle. The internal battery impedance that HG−CVR2 uses to calculate the current correlates highly with FCC. The correlation is based on battery chemistry. The RSOC that this LSI reports using the correlation is not affected by aging. Automatic Convergence of the Error A problem of coulomb counting method is the fact that the error is accumulated over time − This error must be corrected. The general gauges using coulomb counting method must find an opportunity to correct it. This LSI with HG−CVR2 has the feature that the error of RSOC converges autonomously, and doesn’t require calibration opportunities. The error constantly converges in the value estimated from the Open Circuit V oltage. Figure 20 shows the convergent characteristic example from the initialize error. Also, coulomb counting method cannot detect accurate residual change because the amount of the current from self-discharge is too small but HG−CVR2 is capable to deal with such detection by using the voltage information. Simple and Quick Setup In general, it is necessary to obtain multiple parameters for a fuel gauge and it takes a lot of resource and additional development time of the users. One of the unique features of LC709205F is very small number of parameters to be prepared by the beginning of battery measurement – the minimum amount of parameter which users may make is one because Adjustment pack application register has to have one. Such simple and quick start-up is realized by having multiple profile data in the LSI to support various types of batteries. Please contact your local sales office to learn more information on how to measure a battery that cannot use already-prepared profile data. Low Power Consumption Low power consumption of 2.0 /C0109A is realized in the Operation mode. This LSI monitors charge/discharge condition of a battery and changes the sampling rate according to its change of current. Power consumption reduction without deteriorating its RSOC accuracy was enabled by utilizing this method.
Table 13. ORDERING INFORMATION Specifications Brochure, BRD8011/D. appearing in this document are registered trademarks or trademarks of their respective holders.
WLCSP12, 1.48x1.91x0.51 CASE 567XE ISSUE A DATE 22 FEB 2019 XXXX = Specific Device Code A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week *This information is generic. Please refer to device data sheet for actual part marking. Pb−Free indicator, “G” or microdot “/C0071”, may or may not be present. Some products may not follow the Generic Marking. GENERIC MARKING DIAGRAM* XXXXXXXX AWLYYWW MECHANICAL CASE OUTLINE PACKAGE DIMENSIONS ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. ON Semiconductor does not convey any license under its patent rights nor the rights of others. 98AON99809GDOCUMENT NUMBER: DESCRIPTION: Electronic versions are uncontrolled except when accessed directly from the Document Repository. Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red. PAGE 1 OF 1WLCSP12, 1.48x1.91x0.51 © Semiconductor Components Industries, LLC, 2018 www.onsemi.com
www.onsemi.com ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries i n the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property . A listing of ON Semiconductor’s product/patent ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, reg ulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the right s of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION TECHNICAL SUPPORT North American Technical Support: Voice Mail: 1 800−282−9855 Toll Free USA/Canada Phone: 011 421 33 790 2910 LITERATURE FULFILLMENT: Email Requests to: orderlit@onsemi.com ON Semiconductor Website: www.onsemi.com Europe, Middle East and Africa Technical Support: Phone: 00421 33 790 2910 For additional information, please contact your local Sales Representative