Power Management ICs

Battery Protection IC with Cell Balancing Function for 3-serial to 5-serial Cell Pack (Secondary Protection) S-8265C Series

DatasheetFeb. 25, 2020

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The S-8265C Series is a voltage monitoring IC with a cell balancing function, which includes high-accuracy voltage detection circuits, delay circuits, and FETs for cell balancing discharge. The cell balancing function is effective for balancing the voltage of serially connected batteries. Short-circuiting between cells enables cell balancing for serial connection of three cells to five cells.

Features

High-accuracy voltage detection circuit for each cell
Cell balancing detection voltage n (n = 1 to 5): 2.700 V to 4.650 V (5 mV step)
Accuracy ±20 mV (Ta = +25°C)
Accuracy ±25 mV (Ta = -10°C to +60°C)
Cell balancing release voltage n (n = 1 to 5)*1:  2.700 V to 4.650 V
Accuracy ±50 mV (Ta = +25°C)
Overcharge detection voltage n (n = 1 to 5)*2: 2.750 V to 4.700 V (5 mV step)
Accuracy ±20 mV (Ta = +25°C)
Accuracy ±25 mV (Ta = -10°C to +60°C)
Overcharge release voltage n (n = 1 to 5)*3, *4: 2.750 V to 4.700 V
Accuracy ±50 mV (Ta = +25°C)
Built-in cell balancing discharging FET for each cell
Output form
CMOS output, Nch open-drain output
Output logic
Active “H”, active “L”
Built-in test mode function to check cell balancing detection voltage and overcharge detection voltage with shortened delay time
High-withstand voltage
Absolute maximum rating 28 V
Wide operation voltage range
3.6 V to 26 V
Wide operation temperature range
Ta = -40°C to +85°C
Low current consumption
During operation: 0.3 µA typ., 0.7 µA max. (Ta = +25°C)
Lead-free (Sn 100%), halogen-free

*1. Cell balancing release voltage = Cell balancing detection voltage + Cell balancing hysteresis voltage
(Cell balancing hysteresis voltage can be selected from a range of 0 mV to -400 mV in 50 mV step.)
*2. Satisfy Overcharge detection voltage ≧ Cell balancing detection voltage + 50 mV when selecting them.
*3. Overcharge release voltage = Overcharge detection voltage + Overcharge hysteresis voltage
(Overcharge hysteresis voltage can be selected from a range of 0 mV to -400 mV in 50 mV step.)
*4. Satisfy Overcharge release voltage ≧ Cell balancing release voltage + 50 mV when selecting them.

Applications

  • Lithium-ion rechargeable battery pack

Parts List

Product namePackageCell Balancing
Detection
Voltage
[VBU]
(V)
Cell Balancing
Release
Voltage
[VBL]
(V)
Overcharge
Detection
Voltage
[VCU]
(V)
Overcharge
Release
Voltage
[VCL]
(V)
Output FormOutput Logic
Product name
S-8265CAA-K8T2U7TMSOP-84.1454.1454.2754.275CMOS outputActive "H"

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

Last modified: Feb. 13, 2020

  • 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.