3 Volt Power Solutions An overview of performance and design considerations for today’s small devices (mAh)
2.0V 2.0V Voltage Voltage Design
(mWh)
Capability Life
to to
of
Stability Shelf (years) Operating Temperature Output Pulse Energy 1mA Ease Nominal Voltage Capacity 1mA 3V Power Solution Output Flexibility
CR2032 3.0 225 675 8 ‐30C ‐ 60C Excellent
2 x AAAA Alkaline 3.0 575 1725 5 ‐18C ‐ 55C Good
2 x AAA Alkaline 3.0 975 2925 7 ‐18C ‐ 55C Fair
2 x AAA Lithium 3.0 1280 3840 15 ‐40C ‐ 60C Poor 1 x AAAA Alkaline + Boost1 3.3 180 595 5 ‐18C ‐ 55C 1 x AAA Alkaline + Boost1 3.3 350 1155 7 ‐18C ‐ 55C 1 x AAA Lithium + Boost1 3.3 470 1550 15 ‐40C ‐ 60C Lithium Ion2 3.7 120 445 3 ‐ 50C ‐ 40C
1mA Constant Current Discharge Curves 2 x AAA Lithium 2 x AAA Alkaline 2 x AAAA Alkaline CR2032 1 x AAA Lithium + Boost1111 x AAA Alkaline + Boost1 1 x AAAA Alkaline + Boost1 1Lithium Ion22 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.8 Voltage 2.6 2.4 2.2 2.0 0 200 400 600 800 1000 1200 1400 Capacity (mAh)
Physical Parameters Energy Delivered (mWh) at 16.5mW Load to 2.0V
8.0 5000
7.0 4500 4000 6.0 3500 )
3 5.0 3000 4.0 2500
3.0 2000 1500 Volume (cm 2.0 1000 1.0 500 3.0g 4.0g 7.1g 13.0g 8.2g 12.1g 15.2g 23.0g 0.0 0 1 1 1 1 1 1 2 2 Ion 2 Ion 2 Lithium CR2032 Lithium Lithium 2 x AAA 2 x AAA 2 x Alkaline CR2032 Lithium 2 x AAA 2 x 2 x AAA 2 x Alkaline Lithium Alkaline Alkaline 1 x AAA 1 x AAA 1 x Alkaline Lithium Alkaline Alkaline 1 x AAA 1 x AAA 1 x Alkaline + Boost 1 + Boost 1 + Boost 1 x AAAA1 x 1 + Boost AAAA2 x + Boost 1 + Boost 1 1 x AAAA x 1 + Boost 1 AAAA x 2
1 Microchip MCP1640 step‐up DC‐DC converter evaluation board, output set to 3.3V www.energizer.com 2 Lithium Ion Polymer (120mAh) [email protected] ©Energizer Holdings, Inc. - Contents herein do not constitute a warranty. P 1 of 2 3 Volt Power Solutions An overview of performance and design considerations for today’s small devices
Constant Power Rate Capability
10000
1000 Energy Delivered (mWh)
100 110100 Discharge Rate (mW)
Single Pulse CR2032 Continuous and Pulse Load (25 Ohm Load for 1 mSec) (251 Ohm, 1 mSec ON / 24 mSec OFF)
1 2 x AAA Lithium 1 x AAA Lithium + Boost 1 Pulse Open Circuit Voltage 0.5 mA Continuous 2 x AAA Alkaline 1 x AAA Alkaline + Boost1 1 1 Pulse Closed Circuit Voltage 2 x AAAA Alkaline 1 x AAAA Alkaline + Boost 1 3.2 CR2032 3.8 3.0 3.6 2.8 3.4 2.6
3.2 2.4
Voltage 3.0 2.2 Voltage
2.8 2.0 1.8 2.6 Average current of pulses = 0.4 mA 1.6 2.4 0 50 100 150 200 250 0.00 0.50 1.00 1.50 2.00 2.50 Time (mSec) Capacity (mAh)
1 Microchip MCP1640 step‐up DC‐DC converter evaluation board, output set to 3.3V www.energizer.com 2 Lithium Ion Polymer (120mAh) [email protected] ©Energizer Holdings, Inc. - Contents herein do not constitute a warranty. P 2 of 2