Post Date : Mar 09, 2023 / Last updated : Oct 11, 2023
This is a Nichicon Corporation LTO battery “SLB” Series reference.
“SLB” Series Characteristics
- 20C rapid charge-discharge
- High-density input/output like an electric double-layer capacitor
- Can withstand over 25,000 cycles
- Low-temperature characteristics enable use in frigid climates
down to -30℃
Lineup
| Product No. | SLB03070LR35 | SLB03090LR80 | SLB04255L040 | SLB08115L140 | SLB12400L151 | |
|---|---|---|---|---|---|---|
| Nominal voltage | 2.4V | |||||
| Voltage range | 1.8V~2.8V | |||||
| Max. charge/discharge current | 7mA | 16mA | 80mA | 280mA | 3000mA | |
| Nominal capacity | 0.35mAh | 0.8mAh | 4mAh | 14mAh | 150mAh | |
| Internal resistance (Max.) | 12Ω | 8Ω | 0.6Ω | 0.24Ω | 0.06Ω | |
| Temperature range | -30℃~60℃ | |||||
| Size | Φdiameter | 3.0mm | 3.3mm | 4.0mm | 8.0mm | 12.5mm |
| Ldimension | 7.0mm | 9.0mm | 25.5mm | 11.5mm | 40.0mm | |
Nichicon Corporation reference notes: https://www.nichicon.co.jp/products/slb/referencenote/
Reference Circuit/Evaluation Circuit Board
Evaluation circuit board
Circuit diagram
BOM
| Block | Product | Features |
|---|---|---|
| (1) Charging LDO | XC6240A263xR-G | For LTO charging,, 2.63V, 150mA |
| XC6242A2637R-G | Supports 105℃, for LTO charging, 2.63V, 150mA | |
| (2) Battery voltage monitoring | XC6140C18AxR-G | LTO battery voltage monitoring IC Detect voltage 1.8V, release voltage = 2.475V, Iq=104nA |
| XC6142C18A9R-G | Supports 105℃, LTO battery voltage monitoring IC Detect voltage 1.8V, release voltage = 2.450V, Iq=104nA | |
| SBD | XBS024S15R-G | For counter-current prevention, 200mA 40V, low IR |
| CIN | 10V/1μF | Input capacitor for charging LDO |
| CL | 10V/1μF | Output capacitor for charging LDO |
| RLIM | Depends on nominal capacity | Charge current limiting resistance, RLIM=(2.63V-1.8V) / 20C |
| R | 100kΩ | Pull-down resistor |
(1) LDO for LTO battery charging: XC6240, XC6242
Charging using a max. 2.70V low-consumption LDO, including the temperature range, to match the LTO battery specifications.
(2) Battery voltage monitor: XC6140, XC6142
This sets the release voltage that is released when charging is started by the LDO to match the charge-discharge characteristics of the LTO battery.