Product Folder Order Now Tools & Software Technical Documents Support & Community bq7718 SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 bq7718 Overvoltage Protection for 2-Series to 5-Series Cell Li-Ion Batteries with Internal Delay Timer 1 Features 3 Description • The bq7718xy family of products provides an overvoltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition. For quicker productionline testing, the bq7718xy device provides a Customer Test Mode (CTM) with greatly reduced delay time. 1 • • • • • • 2-, 3-, 4-, and 5-Series Cell Overvoltage Protection Internal Delay Timer Fixed OVP Threshold High-Accuracy Overvoltage Protection: ± 10 mV Low Power Consumption ICC ≈ 1 µA (VCELL(ALL) < VPROTECT) Low Leakage Current Per Cell Input < 100 nA Small Package Footprint – 8-pin QFN (3.00 mm × 4.00 mm) In the bq7718xy device, an internal delay timer is initiated upon detection of an overvoltage condition on any cell. Upon expiration of the delay timer, the output is triggered into its active state (either high or low depending on the configuration). Device Information Table(1) 2 Applications • Protection in Li-Ion Battery Packs in: – Power Tools – UPS Battery Backup – Light Electric Vehicles (eBike, eScooter, Pedal Assist Bicycles) PART NUMBER PACKAGE BODY SIZE (NOM) bq771800 WSON (8) 3.00 mm × 4.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet and the Device Comparison Table. Block Diagram PACK+ RVD C VD VDD RIN V5 CIN RIN CIN RIN V3 CIN RIN V2 Sensing Circuit V4 REG INT_EN VOV Delay Timer OUT CIN RIN V1 OSC CIN VSS PACK– Copyright © 2016, Texas Instruments Incorporated 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA. bq7718 SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 www.ti.com Table of Contents 1 2 3 4 5 6 7 8 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Device Comparison Table..................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 4 5 6 7.1 7.2 7.3 7.4 7.5 7.6 7.7 6 6 6 6 7 8 9 Absolute Maximum Ratings ...................................... ESD Ratings ............................................................ Recommended Operating Conditions....................... Thermal Information .................................................. DC Characteristics .................................................... Timing Requirements ................................................ Typical Characteristics .............................................. Detailed Description ............................................ 10 8.1 Overview ................................................................. 10 8.2 Functional Block Diagram ....................................... 10 8.3 Feature Description................................................. 11 8.4 Device Functional Modes........................................ 12 9 Application and Implementation ........................ 13 9.1 Application Information............................................ 13 9.2 Systems Examples.................................................. 16 10 Power Supply Recommendations ..................... 16 11 Layout................................................................... 17 11.1 Layout Guidelines ................................................. 17 11.2 Layout Example .................................................... 17 12 Device and Documentation Support ................. 18 12.1 12.2 12.3 12.4 12.5 12.6 Related Links ........................................................ Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 18 18 18 18 18 18 13 Mechanical, Packaging, and Orderable Information ........................................................... 19 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision D (November 2014) to Revision E Page • Changed the datasheet device number to bq7718 ............................................................................................................... 1 • Added the Block Diagram image ........................................................................................................................................... 1 • Removed the Product Preview note from bq771806 in the Device Comparison Table ......................................................... 4 • Added bq771817 to Device Comparison Table...................................................................................................................... 4 • Replaced the pinout image in the Pin Configuration and Functions section ......................................................................... 5 • Deleted " Lead temperature (soldering, 10 s)" from the Absolute Maximum Ratings table ................................................... 6 • Changed the Handling Ratings table to ESD Ratings table .................................................................................................. 6 • Removed the Product Preview note from bq771806 in the DC Characteristics table............................................................ 7 • Added bq771817 to VHYS DC Characteristics......................................................................................................................... 7 • Added the Timing Requirements table ................................................................................................................................... 8 • Added the Feature Description section ................................................................................................................................ 11 • Added the Device Functional Modes section ....................................................................................................................... 12 • Added the Power Supply Recommendations section .......................................................................................................... 16 • Added the Layout section ..................................................................................................................................................... 17 Changes from Revision C (August 2014) to Revision D Page • Added the bq771815 device to Production Data.................................................................................................................... 4 • Changed the Handling Ratings table ..................................................................................................................................... 6 • Added bq771817 to the VOV DC Characteristics .................................................................................................................... 7 • Added note to the Application and Implementation section ................................................................................................ 13 2 Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 bq7718 www.ti.com SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 Changes from Revision B (October 2013) to Revision C Page • Changed the data sheet format .............................................................................................................................................. 1 • Added the bq771807 device to Production Data.................................................................................................................... 4 Changes from Revision A (September 2013) to Revision B • Page Added the bq771809 device to Production Data.................................................................................................................... 4 Changes from Original (December 2012) to Revision A • Page Added the bq771808 device to Production Data.................................................................................................................... 4 Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 3 bq7718 SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 www.ti.com 5 Device Comparison Table TA OVP (V) OV Hysteresis (V) Output Delay Output Drive Tape and Reel (Large) Tape and Reel (Small) bq771800 4.300 0.300 4s CMOS Active High bq771800DPJR bq771800DPJT bq771801 4.275 0.050 3s NCH Active Low, Open Drain bq771801DPJR bq771801DPJT bq771802 4.225 0.300 1s NCH Active Low, Open Drain bq771802DPJR bq771802DPJT bq771803 4.275 0.050 1s NCH Active Low, Open Drain bq771803DPJR bq771803DPJT bq771804 (1) 4.225 0.300 3s CMOS Active High bq771804DPJR bq771804DPJT bq771805 (1) 4.325 0.300 3s CMOS Active High bq771805DPJR bq771805DPJT bq771806 4.350 0.300 3s CMOS Active High bq771806DPJR bq771806DPJT bq771807 4.450 0.300 3s CMOS Active High bq771807DPJR bq771807DPJT 4.200 0.050 1s NCH Active Low bq771808DPJR bq771808DPJT bq771809DPJR bq771809DPJT Part Number Package Package Designator bq771808 –40°C to 110°C (1) (2) 4 4.200 0.050 1s CMOS Active High bq771810 (1) 4.200 0.250 1s CMOS Active High bq771810DPJR bq771810DPJT bq771811 (1) 4.225 0.050 1s CMOS Active High bq771811DPJR bq771811DPJT bq771812 (1) 4.250 0.050 1s CMOS Active High bq771812DPJR bq771812DPJT bq771813 (1) 4.250 0.050 1s CMOS Active High bq771813DPJR bq771813DPJT bq771814 (1) 3.900 0.300 3s CMOS Active High bq771814DPJR bq771814DPJT bq771815 4.225 0.050 1s NCH Active Low bq771815DPJR bq771815DPJT bq771816 (1) 4.250 0.050 1s NCH Active Low bq771816DPJR bq771816DPJT bq771817DPJR bq771817DPJR T bq7718xyDPJR bq7718xyDPJT bq771809 8-Pin QFN DPJ bq771817 4.275 0.050 1s CMOS Active High bq7718xy (2) 3.850–4.650 0–0.300 1s NCH, Active Low, Open Drain Product Preview only. Future option, contact TI. Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 bq7718 www.ti.com SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 6 Pin Configuration and Functions DPJ Package 8-Pin (WSON) Top View VDD 1 8 OUT V5 2 7 VSS V4 3 6 V1 V3 4 5 V2 Pin Functions NO. NAME TYPE I/O 1 VDD P Power supply DESCRIPTION 2 V5 I Sense input for positive voltage of the fifth cell from the bottom of the stack 3 V4 I Sense input for positive voltage of the fourth cell from the bottom of the stack 4 V3 I Sense input for positive voltage of the third cell from the bottom of the stack 5 V2 I Sense input for positive voltage of the second cell from the bottom of the stack 6 V1 I Sense input for positive voltage of the lowest cell in the stack 7 VSS P Electrically connected to IC ground and negative terminal of the lowest cell in the stack 8 OUT O Output drive for overvoltage fault signal Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 5 bq7718 SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 www.ti.com 7 Specifications 7.1 Absolute Maximum Ratings Over-operating free-air temperature range (unless otherwise noted) (1) MIN MAX UNIT Supply voltage range VDD–VSS –0.3 30 V Input voltage range V5–VSS or V4–VSS or V3–VSS or V2–VSS or V1–VSS –0.3 30 V Output voltage range OUT–VSS –0.3 30 V Continuous total power dissipation, PTOT See Thermal Information Functional temperature –40 110 °C Storage temperature range, TSTG –65 150 °C (1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum–rated conditions for extended periods may affect device reliability. 7.2 ESD Ratings VALUE V(ESD) Rating (1) (2) Electrostatic discharge Human body model (HBM) ESD stress voltage (1) ±2000 Charged device model (CDM) ESD stress voltage (2) ±500 UNIT V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 7.3 Recommended Operating Conditions Over-operating free-air temperature range (unless otherwise noted) Supply voltage, VDD (1) Input voltage range V5–V4 or V4–V3 or V3–V2 or V2–V1 or V1–VSS Operating ambient temperature range, TA (1) MIN MAX UNIT 3 25 V 0 5 V –40 110 °C See Systems Examples. 7.4 Thermal Information bq7718xy THERMAL METRIC (1) DPJ (WSON) UNIT 8 PINS RθJA Junction-to-ambient thermal resistance 56.6 °C/W RθJCtop Junction-to-case(top) thermal resistance 56.4 °C/W RθJB Junction-to-board thermal resistance 30.6 °C/W ψJT Junction-to-top characterization parameter 1.0 °C/W ψJB Junction-to-board characterization parameter 37.8 °C/W RθJCbot Junction-to-case(bottom) thermal resistance 11.3 °C/W (1) 6 For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 bq7718 www.ti.com SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 7.5 DC Characteristics Typical values stated where TA = 25°C and VDD = 18 V, MIN/MAX values stated where TA = –40°C to 110°C and VDD = 3 V to 25 V (unless otherwise noted). SYMBOL PARAMETER CONDITION MIN TYP MAX UNIT Voltage Protection Threshold VCx bq771800 4.300 V bq771801 4.275 V bq771803 4.275 V bq771802 4.225 V (1) 4.225 V bq771805 (1) 4.325 V bq771806 4.350 V bq771807 4.450 V bq771808 4.200 V bq771809 4.200 V (1) 4.200 V bq771811 (1) 4.225 V bq771812 (1) 4.250 V bq771813 (1) 4.250 V (1) bq771804 V(PROTECT) Overvoltage Detection VOV bq771810 bq771814 3.900 V bq771815 4.225 V bq771816 (1) 4.250 V bq771817 VHYS OV Detection Hysteresis 300 400 mV bq771801 0 50 100 mV bq771802 250 300 400 mV bq771803 0 50 100 mV bq771804 (1) 250 300 400 mV bq771805 (1) 250 300 400 mV bq771806 250 300 400 mV bq771807 250 300 400 mV bq771808 0 50 100 mV bq771809 0 50 100 mV bq771810 (1) 200 250 250 mV bq771811 (1) 0 50 100 mV (1) 0 50 100 mV bq771813 (1) 0 50 100 mV bq771814 (1) 250 300 400 mV bq771815 0 50 100 mV bq771816 OV Detection Accuracy VOADRIFT OV Detection Accuracy Across Temperature (1) V 250 bq771812 VOA 4.275 bq771800 (1) 0 50 100 mV bq771817 0 50 100 mV TA = 25°C –10 10 mV TA = –40°C –40 44 mV TA = 0°C –20 20 mV TA = 60°C –24 24 mV TA = 110°C –54 54 mV Product Preview only. Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 7 bq7718 SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 www.ti.com DC Characteristics (continued) Typical values stated where TA = 25°C and VDD = 18 V, MIN/MAX values stated where TA = –40°C to 110°C and VDD = 3 V to 25 V (unless otherwise noted). SYMBOL PARAMETER CONDITION MIN TYP MAX UNIT 1 2 µA 0.1 µA Supply and Leakage Current ICC Supply Current (V5–V4) = (V4–V3) = (V3–V2) = (V2–V1) = (V1–VSS) = 4 V (See Figure 8.) IIN Input Current at Vx Pins (V5–V4) = (V4–V3) = (V3–V2) = (V2–V1) = (V1–VSS) = 4 V (See Figure 8.) –0.1 Output Drive OUT, CMOS Active HIGH Versions Only (V5–V4), (V4–V3), (V3–V2), (V2–V1), or (V1–VSS) > VOV, VDD = 18 V, IOH = 100 µA Output Drive Voltage, Active High VOUT1 6 If three of four cells are short circuited and only one cell remains powered and > VOV, VDD = Vx (cell voltage), IOH = 100 µA V VDD – 0.3 (V5–V4), (V4–V3), (V3–V2), (V2–V1), and (V1–VSS) < VOV, VDD = 18 V, IOL = 100 µA measured into pin IOUTH1 OUT Source Current (during OV) (V5–V4), (V4–V3), (V3–V2), (V2–V1), or (V1–VSS) > VOV, VDD = 18 V. OUT = 0 V. Measured out of OUT pin IOUTL1 OUT Sink Current (no OV) (V5–V4), (V4–V3), (V3–V2), (V2–V1), and (V1–VSS) < VOV, VDD = 18 V, OUT = VDD. Measured into OUT pin 250 0.5 V 400 mV 4.5 mA 14 mA 400 mV 14 mA 100 nA Output Drive OUT, NCH Open Drain Active LOW Versions Only VOUT2 Output Drive Voltage, Active Low (V5–V4), (V4–V3), (V3–V2), (V2–V1), or (V1–VSS) > VOV, VDD = 18 V, IOL = 100 µA measured into OUT pin IOUTH2 OUT Sink Current (during OV) (V5–V4), (V4–V3), (V3–V2), (V2–V1), or (V1–VSS) > VOV, VDD = 18 V. OUT = VDD. Measured into OUT pin IOUTL2 OUT Source Current (no OV) (V5–V4), (V4–V3), (V3–V2), (V2–V1), and (V1–VSS) < VOV, VDD = 18 V. OUT = VDD. Measured out of OUT pin 250 0.5 7.6 Timing Requirements MIN NOM MAX UNIT bq771800 3.2 4 4.8 s bq771801, bq771807 2.4 3 3.6 s bq771802, bq771803, bq771815 0.8 1 1.2 s Preview option only. Contact TI. 4.4 5.5 6.6 s Delay Timer tDELAY OV Delay Time XCTMDELAY 8 Fault Detection Delay Time during Customer Test Mode See Customer Test Mode. Submit Documentation Feedback 15 ms Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 bq7718 www.ti.com SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 7.7 Typical Characteristics 4.40 4.39 4.38 0.316 Mean Min Max 0.315 4.36 VHYS (V) VOUT (V) 4.37 4.35 4.34 4.33 0.314 0.313 4.32 4.31 4.30 −50 −25 0 25 50 Temperature (°C) 75 100 125 0.312 −50 −25 0 G001 Figure 1. Overvoltage Threshold (OVT) vs. Temperature 25 50 Temperature (°C) 75 100 125 G002 Figure 2. Hysteresis VHYS vs. Temperature 1.8 1.6 1.5 1.6 1.4 1.4 1.2 ICELL (µA) IDD (µA) 1.3 1.1 1.0 1.2 1.0 0.9 0.8 0.8 0.7 0.6 −50 −25 0 25 50 Temperature (°C) 75 100 125 0.6 −50 Figure 3. IDD Current Consumption vs. Temperature at VDD = 16 V 8 −3.70 7 −3.72 25 50 Temperature (°C) 75 100 125 G004 6 −3.74 −3.76 VOUT (V) IOUT (mA) 0 Figure 4. ICELL vs. Temperature at VCELL= 9.2 V −3.68 −3.78 −3.80 −3.82 5 4 3 2 −3.84 1 −3.86 −3.88 −50 −25 G003 −25 0 25 50 Temperature (°C) 75 100 125 0 0 G005 Figure 5. Output Current IOUT vs. Temperature 5 10 15 VDD (V) 20 25 30 G006 Figure 6. VOUT vs. VDD Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 9 bq7718 SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 www.ti.com 8 Detailed Description 8.1 Overview In the bq7718xy family of devices, each cell is monitored independently and an external delay timer is initiated if an overvoltage condition is detected on any cell. For quicker production-line testing, the device provides a Customer Test Mode with greatly reduced delay time. 8.2 Functional Block Diagram PACK+ RVD C VD VDD RIN V5 CIN RIN CIN RIN V3 CIN RIN V2 Sensing Circuit V4 REG INT_EN VOV Delay Timer OUT CIN RIN V1 OSC CIN VSS PACK– Copyright © 2016, Texas Instruments Incorporated 10 Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 bq7718 www.ti.com SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 8.3 Feature Description In the bq7718xy device, each cell is monitored independently. Overvoltage is detected by comparing the actual cell voltage to a protection voltage reference, VOV. If any cell voltage exceeds the programmed OV value, a timer circuit is activated. When the timer expires, the OUT pin goes from inactive to active state. Cell Voltage (V) (V5–V4, V4–V3, V 3–V2, V2–V1, V1–VSS) For NCH Open Drain Active Low configurations, the OUT pin pulls down to VSS when active (OV present) and is high impedance when inactive (no OV). VOV VOV –VHYS tDELAY OUT (V) Figure 7. Timing for Overvoltage Sensing 8.3.1 Sense Positive Input for Vx This is an input to sense each single battery cell voltage. A series resistor and a capacitor across the cell for each input is required for noise filtering and stable voltage monitoring. 8.3.2 Output Drive, OUT This pin serves as the fault signal output, and may be ordered in either active HIGH or LOW options. 8.3.3 Supply Input, VDD This pin is the unregulated input power source for the IC. A series resistor is connected to limit the current, and a capacitor is connected to ground for noise filtering. Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 11 bq7718 SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 www.ti.com 8.4 Device Functional Modes 8.4.1 Normal Mode When all of the cell voltages are below the overvoltage threshold, VOV, the device operates in Normal mode. The device monitors the differential cell voltages connected across (V1 – VSS), (V2 – V1), (V3 – V2), (V4 – V3), and (VC4 – VC5). The OUT pin is inactive and if configured: The OUT pin is inactive and if configured: • Active high is low. • Active low is being externally pulled up and is an open drain. 8.4.2 Overvoltage Mode Overvoltage mode is detected if any of the cell voltages exceeds the overvoltage threshold, VOV for configured OV delay time. The OUT pin is activated after a delay time set by the capacitance in the CD pin. The OUT pin will either pull high internally, if configured as active high, or will be pulled low internally, if configured as active low. When all of the cell voltages fall below the (VOV – VHYS), the device returns to NORMAL mode 8.4.3 Customer Test Mode Customer Test Mode (CTM) helps to reduce test time for checking the overvoltage delay timer parameter once the circuit is implemented in the battery pack. To enter CTM, VDD should be set to at least 10 V higher than V5 (see Figure 8). The delay timer is greater than 10 ms, but considerably shorter than the timer delay in normal operation. To exit Customer Test Mode, remove the VDD to a V5 voltage differential of 10 V so that the decrease in this value automatically causes an exit. CAUTION Avoid exceeding any Absolute Maximum Voltages on any pins when placing the part into Customer Test Mode. Also avoid exceeding Absolute Maximum Voltages for the individual cell voltages (V5–V4), (V4–V3), (V4–V3), (V3–V2), (V2–V1), and (V1–VSS). Stressing the pins beyond the rated limits may cause permanent damage to the device. Figure 8 shows the timing for the Customer Test Mode. Cell Voltage (V) (V5–V4, V4–V3, V3–V2, V2–V1, V1–VSS) 10 V VOV VOV – VHYS OUT (V) > 10 ms Figure 8. Timing for Customer Test Mode 12 Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 bq7718 www.ti.com SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information In the case of an Open Drain Active Low configuration, an external pull-up resistor is required on the OUT pin. Changes to the ranges stated in Table 1 will impact the accuracy of the cell measurements. C VD VDD OUT V5 VSS V4 V1 V3 V2 RVD Cell5 R IN Cell4 R IN Cell3 CIN CIN R IN CIN Cell2 R IN CIN Cell1 R IN CIN Copyright © 2016, Texas Instruments Incorporated Figure 9. Application Configuration 9.1.1 Design Requirements Changes to the ranges stated in Table 1 will impact the accuracy of the cell measurements. Figure 9 shows each external component. Table 1. Parameters PARAMETER EXTERNAL COMPONENT MIN NOM MAX 1000 UNIT Voltage monitor filter resistance RIN 900 1100 Ω Voltage monitor filter capacitance CIN 0.01 0.1 µF Supply voltage filter resistance RVD 100 1K Ω Supply voltage filter capacitance CVD 0.1 CD external delay capacitance 0.1 OUT Open drain version pull-up resistance to PACK+ 100 µF 1 µF kΩ NOTE The device is calibrated using an RIN value = 1 kΩ. Using a value other than this recommended value changes the accuracy of the cell voltage measurements and VOV trigger level. Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 13 bq7718 SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 www.ti.com 9.1.2 Detailed Design Procedure Figure 10 shows the measurement for current consumption for the product for both VDD and Vx. VDD OUT V5 VSS I IN V4 V1 I IN V3 V2 ICC I IN Cell5 Cell 4 Cell 3 I IN Cell 2 IIN Cell 1 Copyright © 2016, Texas Instruments Incorporated Figure 10. Configuration for IC Current Consumption Test 14 Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 bq7718 www.ti.com SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 9.1.2.1 Application Curves 4.40 4.39 4.38 0.316 Mean Min Max 0.315 4.36 VHYS (V) VOUT (V) 4.37 4.35 4.34 4.33 0.314 0.313 4.32 4.31 4.30 −50 −25 0 25 50 Temperature (°C) 75 100 125 0.312 −50 −25 0 G001 Figure 11. Overvoltage Threshold (OVT) vs. Temperature 25 50 Temperature (°C) 75 100 125 G002 Figure 12. Hysteresis VHYS vs. Temperature 1.6 1.8 1.5 1.6 1.4 1.4 1.2 ICELL (µA) IDD (µA) 1.3 1.1 1.0 1.2 1.0 0.9 0.8 0.8 0.7 0.6 −50 −25 0 25 50 Temperature (°C) 75 100 125 0.6 −50 Figure 13. IDD Current Consumption vs. Temperature at VDD = 16 V 8 −3.70 7 −3.72 25 50 Temperature (°C) 75 100 125 G004 6 −3.74 −3.76 VOUT (V) IOUT (mA) 0 Figure 14. ICELL vs. Temperature at VCELL= 9.2 V −3.68 −3.78 −3.80 −3.82 5 4 3 2 −3.84 1 −3.86 −3.88 −50 −25 G003 −25 0 25 50 Temperature (°C) 75 100 125 0 0 G005 Figure 15. Output Current IOUT vs. Temperature 5 10 15 VDD (V) 20 25 Product Folder Links: bq7718 G006 Figure 16. VOUT vs. VDD Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated 30 15 bq7718 SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 www.ti.com 9.2 Systems Examples In these application examples, an external pull-up resistor is required on the OUT pin to configure for an Open Drain Active Low operation. C VD R VD Cell 4 Cell 3 Cell 2 Cell 1 RIN RIN C VD VDD OUT VSS V5 VSS V4 V1 V4 V1 V3 V2 V3 V2 VDD OUT V5 RVD CIN RIN CIN Cell3 RIN CIN Cell2 RIN CIN Cell1 CIN RIN RIN CIN CIN Copyright © 2016, Texas Instruments Incorporated Copyright © 2016, Texas Instruments Incorporated Figure 18. 3-Series Cell Configuration with Fixed Delay Figure 17. 4-Series Cell Configuration C VD RVD Cell2 RIN CIN RIN CIN Cell1 VDD OUT V5 VSS V4 V1 V5 V2 Copyright © 2016, Texas Instruments Incorporated Figure 19. 2-Series Cell Configuration with Internal Fixed Delay 10 Power Supply Recommendations The maximum power of this device is 25 V on VDD. 16 Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 bq7718 www.ti.com SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 11 Layout 11.1 Layout Guidelines • • Ensure the RC filters for the V1 and VDD pins are placed as close as possible to the target terminal. The VSS pin should be routed to the CELL– terminal. 11.2 Layout Example Place the RC filters close to the device terminals Power Trace Line Pack + VCELL5 VDD OUT VC5 VSS OUT Pack - VC4 VC1 PWPD VCELL4 VC3 VC2 VCELL3 VCELL2 VCELL1 Figure 20. Example Layout Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 17 bq7718 SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 www.ti.com 12 Device and Documentation Support 12.1 Related Links The table below lists quick access links. Categories include technical documents, support and community resources, tools and software, and quick access to order now. Table 2. Related Links PARTS PRODUCT FOLDER ORDER NOW TECHNICAL DOCUMENTS TOOLS & SOFTWARE SUPPORT & COMMUNITY bq7718 Click here Click here Click here Click here Click here bq771800 Click here Click here Click here Click here Click here bq771801 Click here Click here Click here Click here Click here bq771802 Click here Click here Click here Click here Click here bq771803 Click here Click here Click here Click here Click here bq771806 Click here Click here Click here Click here Click here bq771807 Click here Click here Click here Click here Click here bq771808 Click here Click here Click here Click here Click here bq771809 Click here Click here Click here Click here Click here bq771815 Click here Click here Click here Click here Click here bq771817 Click here Click here Click here Click here Click here 12.2 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 12.3 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 12.4 Trademarks E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 12.5 Electrostatic Discharge Caution This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. 12.6 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 18 Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 bq7718 www.ti.com SLUSAX1E – DECEMBER 2012 – REVISED MARCH 2017 13 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated Product Folder Links: bq7718 19 PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2017 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking (4/5) BQ771800DPJR ACTIVE WSON DPJ 8 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771800 BQ771800DPJT ACTIVE WSON DPJ 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771800 BQ771801DPJR ACTIVE WSON DPJ 8 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771801 BQ771801DPJT ACTIVE WSON DPJ 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771801 BQ771802DPJR ACTIVE WSON DPJ 8 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771802 BQ771802DPJT ACTIVE WSON DPJ 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771802 BQ771803DPJR ACTIVE WSON DPJ 8 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771803 BQ771803DPJT ACTIVE WSON DPJ 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771803 BQ771806DPJR ACTIVE WSON DPJ 8 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771806 BQ771806DPJT ACTIVE WSON DPJ 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771806 BQ771807DPJR ACTIVE WSON DPJ 8 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771807 BQ771807DPJT ACTIVE WSON DPJ 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771807 BQ771808DPJR ACTIVE WSON DPJ 8 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771808 BQ771808DPJT ACTIVE WSON DPJ 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771808 BQ771809DPJR ACTIVE WSON DPJ 8 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771809 BQ771809DPJT ACTIVE WSON DPJ 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771809 BQ771815DPJR ACTIVE WSON DPJ 8 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771815 Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 11-Apr-2017 Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking (4/5) BQ771815DPJT ACTIVE WSON DPJ 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771815 BQ771817DPJR ACTIVE WSON DPJ 8 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771817 BQ771817DPJT ACTIVE WSON DPJ 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 771817 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. Addendum-Page 2 Samples PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2017 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 3 PACKAGE MATERIALS INFORMATION www.ti.com 6-Apr-2017 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing BQ771800DPJR WSON DPJ 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771800DPJT WSON DPJ 8 250 180.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771801DPJR WSON DPJ 8 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771801DPJT WSON DPJ 8 250 180.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771802DPJR WSON DPJ 8 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771802DPJT WSON DPJ 8 250 180.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771803DPJR WSON DPJ 8 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771803DPJT WSON DPJ 8 250 180.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771806DPJR WSON DPJ 8 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771806DPJT WSON DPJ 8 250 180.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771807DPJR WSON DPJ 8 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771807DPJT WSON DPJ 8 250 180.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771808DPJR WSON DPJ 8 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771808DPJT WSON DPJ 8 250 180.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771809DPJR WSON DPJ 8 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771809DPJT WSON DPJ 8 250 180.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771815DPJR WSON DPJ 8 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771815DPJT WSON DPJ 8 250 180.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 6-Apr-2017 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant BQ771817DPJR WSON DPJ 8 3000 330.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 BQ771817DPJT WSON DPJ 8 250 180.0 12.4 3.3 4.3 1.1 8.0 12.0 Q2 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ771800DPJR WSON DPJ 8 3000 367.0 367.0 35.0 BQ771800DPJT WSON DPJ 8 250 210.0 185.0 35.0 BQ771801DPJR WSON DPJ 8 3000 367.0 367.0 35.0 BQ771801DPJT WSON DPJ 8 250 210.0 185.0 35.0 BQ771802DPJR WSON DPJ 8 3000 367.0 367.0 35.0 BQ771802DPJT WSON DPJ 8 250 210.0 185.0 35.0 BQ771803DPJR WSON DPJ 8 3000 367.0 367.0 35.0 BQ771803DPJT WSON DPJ 8 250 210.0 185.0 35.0 BQ771806DPJR WSON DPJ 8 3000 367.0 367.0 35.0 BQ771806DPJT WSON DPJ 8 250 210.0 185.0 35.0 BQ771807DPJR WSON DPJ 8 3000 367.0 367.0 35.0 BQ771807DPJT WSON DPJ 8 250 210.0 185.0 35.0 BQ771808DPJR WSON DPJ 8 3000 367.0 367.0 35.0 BQ771808DPJT WSON DPJ 8 250 210.0 185.0 35.0 BQ771809DPJR WSON DPJ 8 3000 367.0 367.0 35.0 Pack Materials-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 6-Apr-2017 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ771809DPJT WSON DPJ 8 250 210.0 185.0 35.0 BQ771815DPJR WSON DPJ 8 3000 367.0 367.0 35.0 BQ771815DPJT WSON DPJ 8 250 210.0 185.0 35.0 BQ771817DPJR WSON DPJ 8 3000 367.0 367.0 35.0 BQ771817DPJT WSON DPJ 8 250 210.0 185.0 35.0 Pack Materials-Page 3 IMPORTANT NOTICE FOR TI DESIGN INFORMATION AND RESOURCES Texas Instruments Incorporated (‘TI”) technical, application or other design advice, services or information, including, but not limited to, reference designs and materials relating to evaluation modules, (collectively, “TI Resources”) are intended to assist designers who are developing applications that incorporate TI products; by downloading, accessing or using any particular TI Resource in any way, you (individually or, if you are acting on behalf of a company, your company) agree to use it solely for this purpose and subject to the terms of this Notice. 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