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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.
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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
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Min Typ Max
Nominal capacity (minimum)
Charge loss
(recoverable)
SDisch
Test conditions
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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
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0.9
1
1.1
1.2
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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.
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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
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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“.
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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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EFL700A39
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