Power Management ICs

Battery Monitoring IC for 3-serial to 5-serial Cell Pack S-8255B Series

The S-8255B Series is a monitoring IC for 3-serial to 5-serial cell lithium-ion rechargeable batteries, which includes high-accuracy voltage detection circuits and delay circuits. The S-8255B Series can monitor the status of 3-serial to 5-serial cell lithium-ion rechargeable battery packs.
Connecting an NTC, it allows for the temperature detection at four different points: high temperature detection during charging, low temperature detection during charging, high temperature detection during discharging, and low temperature detection during discharging.

Features

High-accuracy voltage detection function for each cell
Overcharge detection voltage n (n = 1 to 5): 3.550 V to 4.600 V (50 mV step) Accuracy ±20 mV
Overcharge release voltage n (n = 1 to 5): 3.150 V to 4.600 V*1 Accuracy ±50 mV
Overdischarge detection voltage n (n = 1 to 5): 2.000 V to 3.200 V (100 mV step) Accuracy ±80 mV
Overdischarge release voltage n (n = 1 to 5): 2.000 V to 3.400 V*2 Accuracy ±100 mV
Each delay time is settable by external capacitor (Temperature detection delay time is internally fixed)
Independent control of charge inhibition, discharge inhibition, and power-saving by each control pin
0 V battery detection function is selectable
Available, unavailable
CO and DO pin output voltage is limited to 8 V max. respectively
Switching control for 3-serial to 5-serial cell is possible by inputting voltage to the SEL1 pin and the SEL2 pin
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) Accuracy ±0.005
Low temperature detection ratio during charging / discharging: 0.030 to 0.400 (0.005 step) Accuracy ±0.005
High-withstand voltage
Absolute maximum rating 28 V
Wide operation voltage range
5 V to 24 V
Wide operation temperature range
Ta = -40°C to +85°C
Low current consumption
During operation: 19 μA max. (Ta = +25°C)
During power-saving: 0.1 μA max. (Ta = +25°C)
Lead-free, halogen-free

*1. Overcharge release voltage = Overcharge detection voltage – Overcharge hysteresis voltage
(Overcharge hysteresis voltage n (n = 1 to 5) is selectable in 0 V to 0.4 V in 50 mV step)

*2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage
(Overdischarge hysteresis voltage n (n = 1 to 5) is selectable in 0 V to 0.7 V in 100 mV step)

Applications

  • Rechargeable lithium-ion battery pack

Parts List

Product namePackageOvercharge
Detection
Voltage
[VCU]
(V)
Overcharge
Release
Voltage
[VCL]
(V)
Overdischarge
Detection
Voltage
[VDL]
(V)
Overdischarge
Release
Voltage
[VDU]
(V)
0 V Battery
Detection
Function
High Temperature
Detection Ratio
during
Charging
[rTHCH]
Low Temperature
Detection Ratio
during
Charging
[rTHCL]
High Temperature
Detection Ratio
during
Discharging
[rTHDH]
Low Temperature
Detection Ratio
during
Discharging
[rTHDL]
Product name
S-8255BAA-TET1S20-Pin TSSOP4.1004.0502.6002.700Unavailable0.6700.2700.7950.190
S-8255BAB-TET1S20-Pin TSSOP4.2504.1502.5003.000Available0.6700.2700.7950.190

Please confirm the product name and specifications with the data sheet again.

Last modified: Nov. 09, 2018

  • These descriptions may be different from the actual product name and parameter.
    Please confirm the product name and specifications with the data sheet again.
  • The information herein is subject to change without notice.