MAX17050EVKIT# Maxim Integrated, MAX17050EVKIT# Datasheet
MAX17050EVKIT#
Specifications of MAX17050EVKIT#
Related parts for MAX17050EVKIT#
MAX17050EVKIT# Summary of contents
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... Portable Medical Equipment BATTERY PACK OPTIONAL PROTECTION 10kI NTC THERMISTOR ModelGauge is a trademark of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. MAX17047/MAX17050 ModelGauge m3 Fuel Gauge S Accurate Battery-Capacity and Time-To-Empty Estimation ...
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... Resolution, AIN Current Register Resolution Current Full-Scale Magnitude Current Offset Error Current Gain Error Time-Base Accuracy Maxim Integrated ModelGauge m3 Fuel Gauge Continuous Power Dissipation (T TDFN (derate 24.4mW/NC above +70NC) ...............1951.2mW WLP (derate 11.9mW/NC above +70NC)...................952.0mW + 0.3V) Operating Temperature Range .......................... -40NC to +85NC TT Junction Temperature ...
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... Hold Time (Repeated) START Condition Low Period of SCL Clock High Period of SCL Clock Setup Time for a Repeated START Condition Data Hold Time Data Setup Time Rise Time of Both SDA and SCL Signals Maxim Integrated ModelGauge m3 Fuel Gauge SYMBOL CONDITIONS I = 0.5mA OUT t PRE V ...
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... B SDA LOW R SCL t HD:STA t HD:DAT S 2 Figure Bus Timing Diagram Maxim Integrated ModelGauge m3 Fuel Gauge SYMBOL CONDITIONS SU:STO t (Note (Note BIN = +25°C. Limits over the operating range are guaranteed by design and A ...
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... AT CONSTANT-CURRENT LOAD 100 TEMPERATURE DURING CONSTANT LOAD FUEL GAUGE CHANGES 20 TRAJECTORY AFTER TEMPERATURE CHANGE 10 TEMPERATURE TIME (Hr) Maxim Integrated ModelGauge m3 Fuel Gauge ACTIVE CURRENT vs. SUPPLY VOLTAGE +70° +25° -20° ...
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... TIME (Hr) CHARGE AND DISCHARGE AT +20°C 100 90 80 C/2 DISCHARGE SOC REP 70 REFERENCE 60 SOC C/4 DISCHARGE 20 C/7 DISCHARGE 10 C/9 DISCHARGE TIME (Hr) Maxim Integrated ModelGauge m3 Fuel Gauge Typical Operating Characteristics (continued ERROR - MAX17047 toc10 ERROR 0 ...
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... THRM connects internally to V Power-Supply and Battery Voltage-Sense Input. Kelvin connect to positive terminal of battery pack BATT Bypass with a 0.1FF capacitor to CSP. — — EP Exposed Pad (TDFN Only). Connect to CSP. Maxim Integrated ModelGauge m3 Fuel Gauge 10 V BATT 9 THRM ALRT 8 MAX17047 7 ...
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... The device provides two methods for reporting the age of the battery: reduction in capacity and cycle odometer. The device provides precision measurements of current, voltage, and temperature. Temperature of the battery Maxim Integrated ModelGauge m3 Fuel Gauge IN 32kHz OSCILLATOR 2V LDO OCV CALCULATION ...
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... SOC based on table lookup. This SOC estimation does not accumulate offset error over time. The ModelGauge m3 algorithm combines a high-accu- racy coulomb counter with a VFG. The complementary Maxim Integrated MAX17047/MAX17050 ModelGauge m3 Fuel Gauge VOLTAGE FUEL GAUGE OCV CALCULATION ...
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... CELL CYCLES Figure 3. ModelGauge m3 OCV and Coulomb-Count Mixing Figure 4. ModelGauge m3 Algorithm Mixing Conceptual Illustration Maxim Integrated ModelGauge m3 Fuel Gauge The resulting output from the mixing algorithm does not suffer drift from current measurement offset error and is more stable than a stand-alone OCV estimation algorithm ...
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... In most cases, this error is minor and is quickly removed by the fuel gauge algorithm dur- ing normal operation. Maxim Integrated MAX17047/MAX17050 ModelGauge m3 Fuel Gauge The device is designed to mount outside the cell pack that it monitors ...
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... OPTIONAL 10kI PROTECTION IC NTC THERMISTOR Figure 5. Typical Operating Circuit BATTERY PACK PK+ CELL N N-1 mI CELL 1 MAX9910 1mI T OPTIONAL 10k NTC THERMISTOR PK- Figure 6. Multicell Application Circuit Maxim Integrated ModelGauge m3 Fuel Gauge PK+ THRM OPTIONAL 10kI T AIN REG OPTIONAL 0.1µF 0.1µF 10nF PK- 4.5V-5.5V REGULATOR V TT 100I V ...
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... CHARGER REQUIREMENTS THERMISTOR INSIDE CELL PACK Figure 7. Operating Circuits that Share Pack Thermistor with System Charger Maxim Integrated ModelGauge m3 Fuel Gauge 3) CSN and CSP traces should make Kelvin connections to R through the CSN and CSP pins. Any shared high essential for current paths on these traces will affect current- measurement gain accuracy ...
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... Algorithm Configuration registers allow the host to adjust performance of the device for its application. The Save and Restore registers allow an application to maintain accuracy of the algorithm after the device has been power cycled. The following sections describe each register in detail. Maxim Integrated ModelGauge m3 Fuel Gauge PACK+ V BATT THRM ...
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... TempLim V_empty FullCapNom Iavg_empty Figure 9. ModelGauge m3 Register Map MSB—ADDRESS 0Dh MSb Figure 10. SOC Register Format (Output) MIX Maxim Integrated ModelGauge m3 Fuel Gauge CELL CELL ModelGauge ALGORITHM LearnCFG FilterCFG RelaxCFG MiscCFG AtRate LSb ...
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... MSb Figure 13. RemCap Register Format (Output) REP Maxim Integrated ModelGauge m3 Fuel Gauge Register (0Fh) use only the upper byte of the register with a resolution MIX of 1.0%. RemCap that prevents large jumps in the reported value caused by changes in the application such as abrupt changes in load register format ...
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... MSb Figure 16. SOC Register Format (Output) VF Maxim Integrated ModelGauge m3 Fuel Gauge Register (0Eh) value is an unfiltered calculation. Jumps in the value can AV be caused by changes in the application such as abrupt changes in load current. register format. The SOC the battery according to the voltage fuel gauge. The reg- ister value is stored as a percentage with a resolution of 0 ...
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... MSb Figure 19. Cycles Register Format (Output) Maxim Integrated ModelGauge m3 Fuel Gauge The Cycles register accumulates total percent change in the cell during both charging and discharging. The result is stored as a total count of full charge/discharge cycles. For example, a full charge/discharge cycle results in the Cycles register incrementing by 100% ...
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... MSb Figure 22. FullCapNom Register Format (Output) Maxim Integrated ModelGauge m3 Fuel Gauge This register holds the calculated full capacity of the cell, not including temperature and charger tolerance. New full capacity values are calculated periodically by the IC during operation. The value is stored in terms of FVh and must be divided by the application sense resistor value to determine capacity in mAh ...
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... MSb Figure 25. FullSOCThr Register Format (Input) Maxim Integrated ModelGauge m3 Fuel Gauge QH Register (4Dh) of the cell by comparing against the calculated pres- ent capacity stored in the FullCAP register. DesignCap has an LSb equal to 5.0FVh and a full range 327.68mVh. The user should multiply the mAh capac- ity of the cell by the sense resistor value to determine the FVh value to store in the DesignCap register ...
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... DISCHARGING CHARGING 0mA DISCHARGING Figure 26. False End-of-Charge Events Maxim Integrated ModelGauge m3 Fuel Gauge and AverageCurrent registers, the device can reject false end-of-charge events such as application load spikes or early charge-source removal. See the End-of-Charge Detection graph in the and ...
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... CHARGING 0mA DISCHARGING CHARGING 0mA DISCHARGING Figure 27. FullCAP Learning at End of Charge Maxim Integrated ModelGauge m3 Fuel Gauge The device detects end of charge if all the following con- ditions are met: • SOC • AND ICHGTerm x 0.125 < Current < ICHGTerm x 1.25 • AND ICHGTerm x 0.125 < AverageCurrent < ...
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... MSb Figure 28. ICHGTerm Register Format (Input) MSB—ADDRESS 3Ah MSb Figure 29. V_empty Register Format (Input) Maxim Integrated ModelGauge m3 Fuel Gauge Table 1. Cell Characterization Information Registers is the V_empty Characterization Table (48 words) 1) hold information LSb MSb UNITS: 1 ...
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... Load Load Load Load MSb Figure 31. RelaxCFG Register Format (Input) Maxim Integrated ModelGauge m3 Fuel Gauge TEMP2:TEMP0—Sets the time constant for the AverageTemperature register. The default POR value of 1h gives a time constant of 12min. The equation setting the period is: AvergeTemperature time constant = 175.8ms x 2 X— ...
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... Figure 32. Cell Relaxation Detection MSB—ADDRESS MSb Figure 33. LearnCFG Register Format (Input/Output) Maxim Integrated ModelGauge m3 Fuel Gauge is compared CELL The LearnCFG register controls all functions relating to adaptation during operation. The LearnCFG register default values should not be changed unless specifically required by the application. ...
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... MSb Figure 35. FSTAT Register Format (Output) Maxim Integrated ModelGauge m3 Fuel Gauge The Learn Stage 1 0 SOC Alerts are generated based on the SOC 1 1 SOC Alerts are generated based on the SOC MR4:MR0—Mixing Rate. This value sets the strength of the servo mixing rate after the final mixing state has been reached (> ...
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... MSb Figure 36. AtRate Register Format (Input) Maxim Integrated ModelGauge m3 Fuel Gauge registers calculate their values for the AtRate register theoretical current instead. The AtRate register holds a two’s-complement 16-bit value. Do not write 8000h to this register. Any power-on reset (POR) of the device resets all memory locations to their default POR value ...
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... End-of-discharge • Prior to application entering shutdown state The host is responsible for loading the default character- ization data at first power-up of the device, and restoring the default characterization data plus learned information on subsequent power-up events. Maxim Integrated ModelGauge m3 Fuel Gauge 175ms DDMIN A/D SOC VALUES ...
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... A/D READINGS OUTPUT REGISTERS Figure 38. Operation After Cell Insertion Maxim Integrated ModelGauge m3 Fuel Gauge newly inserted cell. This process can take up to 1.845s (FTHRM = 0) or 620ms (FTHRM = 1) from time of inser- tion. Note that the device uses the cell voltage as a start- ing point for the fuel gauge. If the cell voltage is not fully ...
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... See Figure 39. Fast Detection of Cell Removal Maxim Integrated ModelGauge m3 Fuel Gauge Cell Removal The device operates in one of two power modes: active and shutdown. While in active mode, the device oper- ...
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... C EDGE OR ALRT EDGE DETECTED) POWER-ON RESET (RECOVERY FROM POWER LOSS) Figure 40. Device State Based on Shutdown Exit Condition Maxim Integrated ModelGauge m3 Fuel Gauge nal. Note that if the pin is configured to be logic-low when inactive, the external pullup increases current drain. The ALRTp bit in the CONFIG register sets the polarity of the ALRT pin output ...
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... MAX MAX MAX MAX MSb Figure 43. S Threshold Register Format (Input) ALRT Maxim Integrated ModelGauge m3 Fuel Gauge operating range of the Temperature register. At power- up, the thresholds default to their maximum settings— (Figure 41) sets upper 7F80h (disabled). register format. The S lower limits that generate an ALRT pin interrupt if exceeded by the selected SOC register values ...
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... ALRTp AINSH Ten MSb Figure 44. CONFIG Register Format (Input) Maxim Integrated MAX17047/MAX17050 ModelGauge m3 Fuel Gauge enable the thermistor bias switch. With a standard 10kI thermistor, this adds an additional ~200FA to the current drain of the circuit. This bit is set power-up. ETHRM—Enable Thermistor. Set to logic 1 to enable the automatic THRM output bias and AIN measurement every 1 ...
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... MSB—ADDRESS 3Fh THR THR THR CTR MSb Figure 46. SHDNTIMER Register Format (Input/Output) Maxim Integrated ModelGauge m3 Fuel Gauge S S only be cleared through software. When alerts are cleared automatically when the threshold is no THRM DETR longer exceeded. S This register holds timing information for the fuel gauge. ...
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... MSB—ADDRESS 00h Br Smx Tmx Vmx MSb Figure 47. Status Register Format (Input/Output) Maxim Integrated ModelGauge m3 Fuel Gauge S S register. Smn is set power-up. Figure 47 Bi—Battery Insertion. This bit is set when the device detects that a battery has been inserted into the system by monitoring the AIN pin ...
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... MSb Figure 50. AverageV Register Format (Output) CELL Maxim Integrated ModelGauge m3 Fuel Gauge range. The resulting data is placed in the V every 175.8ms with an LSb value of 0.625mV. Voltages above the maximum register value are reported as the shows the Version maximum value. The lower 3 bits of the V don’ ...
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... Adjusting CGAIN to 0.010 keep units constant 0.020 Maxim Integrated ModelGauge m3 Fuel Gauge Register (1Bh) devices are calibrated for current-measurement accu- CELL racy at the factory. However, if the application requires, Current Register readings can be adjusted by changing the COFF and CGAIN register settings. ...
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... MAX MAX MAX MSb Figure 54. MaxMinCurrent Register Format (Output) Maxim Integrated ModelGauge m3 Fuel Gauge update. Host software can reset this register by writing it to its power-up value of 807Fh. The maximum and mini- mum voltages are each stored as two’s-complement 8-bit values with 0.4mV/R the MaxMinCurrent register format ...
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... R Semitec 103AT-2 Fenwal 197-103LAG-A01 TDK Type F Maxim Integrated ModelGauge m3 Fuel Gauge when temperature measurements are complete. This fea- ture limits the time the external resistor-divider network is active and lowers the total amount of energy used by Figure 56 the system. When Tex = 0 and Ten = 1 in the CONFIG register, the ...
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... MSb Figure 59. AverageTemperature Register Format (Output) Maxim Integrated ModelGauge m3 Fuel Gauge value. See the TGAIN and TOFF configuration registers. The resulting data is placed in the Temperature register every 1.4s with a resolution of +0.0039NC 8-bit temperature reading is desired, the host can read only the upper byte of the Temperature register with a resolu- tion of +1 ...
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... MSb Figure 61. TGAIN Register Format (Input) Maxim Integrated ModelGauge m3 Fuel Gauge Both these registers are signed two’s complement. These registers allow for accurate temperature conversions when using a variety of external NTC thermistors (see Figure 61 shows the TOFF register format. ...
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... DesignCap 19h AverageV CELL 1Ah MaxMinTemperature 1Bh MaxMinV CELL 1Ch MaxMinCurrent 1Dh CONFIG 1Eh ICHGTerm 1Fh RemCap AV 20h RESERVED 21h Version Maxim Integrated ModelGauge m3 Fuel Gauge LSb MSb - A/D ALERT/ APP CELL MEASURE STATUS ...
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... RESERVED 4Dh QH 4Eh–7Fh RESERVED Characterization 80h–AFh Table B0h–FAh RESERVED FBh VFOCV FCh–FEh RESERVED FFh SOC VF Maxim Integrated ModelGauge m3 Fuel Gauge A/D ALERT/ APP CELL MEASURE STATUS DATA DATA ü ü ü ü ...
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... Each byte of a data transfer is acknowledged with an Acknowledge bit ( Acknowledge bit (N). Both the master and the device slave generate acknowledge Maxim Integrated ModelGauge m3 Fuel Gauge bits. To generate an Acknowledge, the receiving device must pull SDA low before the rising edge of the acknowl- edge-related clock pulse (ninth pulse) and keep it low until SCL returns low ...
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... Acknowledge bit— A Master No Acknowledge— N Master Maxim Integrated ModelGauge m3 Fuel Gauge to the last byte it requires with a No Acknowledge. This signals the device that control of SDA is to remain with the master following the Acknowledge clock. The write Data protocol is used to write to register and shadow RAM data to the IC starting at memory address MAddr ...
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... MAX17050X+T10 -40°C to +85°C +Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. *EP = Exposed pad. Maxim Integrated MAX17047/MAX17050 ModelGauge m3 Fuel Gauge For the latest package outline information and land patterns (foot- PIN-PACKAGE prints www.maximintegrated.com/packages. Note that a 10 TDFN-EP* “ ...
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... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 2012 Maxim Integrated © MAX17047/MAX17050 ModelGauge m3 Fuel Gauge DESCRIPTION The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. Revision History PAGES CHANGED — 11–41, 43, 45 ...