EFL700A39 EnFilm™ - rechargeable solid state lithium thin film battery Datasheet − production data Applications Device is intended to be used in a wide range of applications including: • Internet of things • Sensors and networks • Smart card • RF ID tags • Energy storage for energy harvesting devices • Non implantable medical applications • Backup power • Wearable applications Description Features The EFL700A39 is a thin film rechargeable lithium battery. The battery has a LiCoO2 cathode, LiPON ceramic electrolyte and a lithium anode. • All solid-state • Ultra thin • Fast recharge Table 1. Device summary • Low capacity loss • Long cycle life • RoHS compliant • UL file number: MH47669 Complies with the following standards • IEC 62133 • UN Manual of Tests and Criteria, Part III, subsection 38.3 Symbol Value Capacity 0.7 mAh Vnominal 3.9 V Vop 3.0 to 4.2 V Rint 100 ohm Ip 10 mA Dimension Thickness • ISO7816 / IEC10373 (mechanical / flexibility smartcard standards) 25.7 x 25.7 mm 220 µm TM: EnFilm is a trademark of STMicroelectronics June 2014 This is information on a product in full production. DocID17370 Rev 5 1/8 www.st.com Characteristics 1 EFL700A39 Characteristics Table 2. Absolute ratings Symbol Vop Ic Ip Tstg Top Clfe Parameter Operating voltage Value Unit 3.0 – 4.2 V 5 mA 10 mA - 20 to 60 °C - 20 to 60 °C 4000 cycle Maximum continuous discharge current (1) Maximum pulsed discharge current at 30 °C Storage temperature range Operating temperature range (2) Cycle life (to minimum of 80% of initial capacity)(3) 1. Pulsing conditions: 100 ms on, 0.9 s off, cut off voltage during pulse = 2 V for higher pulses current contact ST representative 2. 1/30 C discharge at -20 °C: operating at 60 °C reduces the cycle life 3. 1C discharge rate: cycling between SoC = 75% to SoC = 0% (SoC = state of charge) Table 3. Electrical characteristics Symbol C Rint Ct Parameter Unit T = 30 °C Discharge @ 1 mA Cut-off voltage = 3.0 V Internal resistance T = 30 °C - Charge time to 80% of full capacity Constant voltage = 4.2 V - - - 3 %/year - 20 % over 10 years Self discharge Capacity loss (Non-recoverable) Room temperature(1) SoC = 50% 1. For other operating conditions contact ST representative 2/8 Min Typ Max Nominal capacity (minimum) Charge loss (recoverable) SDisch Test conditions DocID17370 Rev 5 0.7 - - 100 120 20 mAh ohm mn EFL700A39 Characteristics Figure 1. Typical discharge curve 4,2 Voltage (V) Typical Discharge Curve at 30°C 4,0 3,8 3,6 3,4 3,2 Discharge Capacity (mA.h) 3,0 0 0,1 0,2 3.5 mA 5 mA 0,3 1.4 mA 0,4 0,5 0,6 0.7 mA 1 mA 0,7 350 µA 0,8 70 µA 0,9 1 10 µA 1 µA Figure 2. Typical charge curve 100.0 Charge capacity (%) 90.0 80.0 Charge done at constant voltage of 4.2 V at 30 °C 70.0 60.0 50.0 40.0 30.0 20.0 10.0 Charge time (min.) 0.0 10 20 30 40 Figure 3. Typical pulsed discharge curve Voltage(V) 4.5 Pulse conditions: 10 mA, 100 msec on 900 msec off, tested at 30 °C 4 3.5 3 2.5 Discharge capacity(mAh) 2 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 DocID17370 Rev 5 0.8 0.9 1 1.1 1.2 3/8 8 Application information 2 EFL700A39 Application information This product is not authorized for use in (i) implantable medical devices (devices placed under the skin (devices such as hearing aids are not considered implantable medical devices)), (ii) US government specific (custom) applications or (iii) wafer test devices (“Prohibited Applications”). ST disclaims any liability, including any intellectual property infringement or misappropriation claims, resulting from the use of the product in prohibited applications. Any such use shall be at customer's sole risk and the customer shall defend, indemnify and hold harmless ST from any liability, damage, costs or expense (including attorney fees) resulting from such use. Furthermore, ST shall stop selling the product for use in the Prohibited Applications if customer does not cease using the product in the Prohibited Applications within 15 days of notice until such time as customer has taken precautions reasonably satisfactory to ST to prevent such prohibited use. Customer shall be responsible to ST for any finished goods or work in process in such instance similar to any order cancellation. 3 Recommended charge and discharge processes 3.1 Charge Battery can be charged from a 4.2 V ±0.05 V constant voltage source with or without current limit. More than 90% of the total capacity is recharged when the charge current falls below 0.1 mA. 3.2 Discharge When discharging under constant current or constant load, the cut-off voltage should be no less than 3.0 V. Cut-off voltage can be lowered to 2.0 V for pulsed discharge. 3.3 Design recommendations: Refer to STMicroelectronics application note: AN4085:Design considerations of the EFL700A39. 4/8 DocID17370 Rev 5 EFL700A39 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Figure 4. Package dimension definitions g t B Interconnection contact T T Detail echelle: 80/1 B 45° g y A Interconnection: contact + Interconnection: contact - g A Opposite marking side view y Detail scale: 5/1 Table 4. Package dimension values Dimensions Ref Millimeters Inches Min. Typ. Max. Min. Typ. Max. A 25.2 25.7 26.05 0.992 1.012 1.026 B 25.2 25.7 26.05 0.992 1.012 1.026 T 0.20 0.22 0.008 0.009 t 0.07 5.3 5.9 g 0.209 0.232 0.3 0.012 Figure 5. Footprint 25.4 5.46 Y 0.003 45 °C 4 Package information DocID17370 Rev 5 5/8 8 Recommendations for the assembly on PCB EFL700A39 Figure 6. Tray dimensions 128 ±0.3 32 ±0.2 0.7 26.1 175 128 ±0.3 32 ±0.2 ST 1.5 5.7 45° 26.1 Dimensions in mm 15 23 ±1.5 175 Figure 7. Tape and reel specification 25.65 32.0 Ø 2.0 ELONGATED(oblong) holes 2.00 1.75 20.2 25.90 40.4 44 ±0.3 ST ROUND holes 2.0 ±0.15 1.00 Ø 1.50 4.0 User direction of feed Dimensions in mm 5 Recommendations for the assembly on PCB Refer to the STMicroelectronics Application note: AN4046: “EnFilm™ micro battery EFL700A39, recommendations for manual assembly on PCB“. AN4351: “EnFilm™ micro battery EFL700A39, automatic or semi-automatic mounting on PCB“. 6/8 DocID17370 Rev 5 EFL700A39 6 Ordering information Ordering information Figure 8. Ordering information scheme EFL 700 A 39 EnFilm™ microbattery Capacity 700 = 700 µAh Package dimensions A = 25.7 x 25.7 mm, thickness = 220 µm Nominal voltage 39 = 3.9 V Table 5. Ordering information 7 Order code Marking Weight Base qty Delivery mode EFL700A39 EFL700A39 0.2 g 25 Tray EFL700A39-RL EFL700A39 0.2 g 100 Tape and reel Revision history Table 6. Document revision history Date Revision Changes 08-Apr-2010 1 Initial release. 23-Apr-2012 2 Insert AN4046 reference for recommendations for the soldering process and update Figure 4. 27-Sep-2013 3 Updated Figure 4 and Chapter 5. 05-Nov-2013 4 Updated Figure 1 and Features 02-Jun-2014 5 Updated Features, Applications, Table 1, Table 2, Table 3, Table 4, Table 5, Figure 4 and Figure 8. Added Figure 5, Figure 6 and Figure 7. Added Chapter 3.3. 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