ABLIC S-8245A/C Battery Protection ICs

ABLIC S-8245A/C Battery Protection ICs provide protection for 3-serial to 5-serial cell lithium-ion rechargeable batteries. The devices include high-accuracy voltage detection circuits and delay circuits. The S-8245A/C ICs protect lithium-ion rechargeable battery packs from overcharge, over-discharge, and overcurrent. Cascade connection using the S-8245A/C devices allows protecting 6-serial or more cells lithium-ion rechargeable battery packs.

The S-8245A/C ICs can be used with a Negative Temperature Coefficient (NTC) thermistor, enabling high- and low-temperature detection during charging and discharging.

The ABLIC S-8245A/C Battery Protection ICs are offered in a compact 24-pin SSOP package and feature a wide -40°C to +85°C operating temperature range.

Features

High-accuracy voltage detection for each cell
- Overcharge detection voltage n (n = 1 to 5)
  - 3.550V to 4.600V (50mV step)
  - ±20mV accuracy
- Overcharge release voltage n (n = 1 to 5)
  - 3.150V to 4.600V
  - ±50mV accuracy
- Over-discharge detection voltage n (n = 1 to 5)
  - 2.000V to 3.200V (100mV step)
  - ±80mV accuracy
- Over-discharge release voltage n (n = 1 to 5)
  - 2.000V to 3.400V
  - ±100mV accuracy
Three-level discharge overcurrent detection
- Discharge overcurrent one detection voltage
  - 0.020V to 0.300V (10mV step)
  - ±10mV accuracy
- Discharge overcurrent 2 detection voltage
  - 0.040V to 0.500V (20mV step)
  - ±15mV accuracy
- Load short-circuiting detection voltage
  - 0.100V to 1.000V (25mV step)
  - ±50mV accuracy
Charge overcurrent detection
- Charge overcurrent detection voltage
- -0.300V to -0.020V (10mV step)
- Accuracy ±10mV
Internally fixed load short-circuiting detection delay time and temperature detection delay time
Independent control of charge inhibition, discharge inhibition, and power-saving by each control pin

Delay time settable by an external capacitor
Selectable 0V battery charge function (Available, Unavailable)
Selectable power-down function (Available, Unavailable)
Selectable CIT pin internal resistance value (831kΩ, 8.31MΩ)
CO and DO pin output voltage limited to 15V
Switching control for 3-serial to the 5-serial cells is possible by inputting voltage to the SEL1 pin and the SEL2 pin
Protection of 6-serial or more cells is possible by cascade connection
Temperature detection is possible at four different points by connecting an NTC
- High-temperature detection ratio during charging / discharging:
  - 0.600 to 0.900 (0.005 step)
  - ±0.005 accuracy
- Low-temperature detection ratio during charging / discharging
  - 0.030 to 0.400 (0.005 step)
  - ±0.005 accuracy
High-withstand voltage
- Absolute maximum rating 28V
- Wide 5V to 24V operation voltage range
-40°C to +85°C operating temperature range
Low current consumption
- 20µA during operation
- 0.5µA during power-down
- 0.1µA during power-saving
SSOP-24 package
Lead-free and halogen-free