Power Management ICs

Battery Protection IC for 2-Serial-Cell Pack S-82B2A/B Series

Battery protection ICs ideal for high-accuracy overcurrent protection and higher safety S-82A2/B2 Series

This IC is a protection IC for lithium-ion / lithium polymer rechargeable batteries, which includes high-accuracy voltage
detection circuits and delay circuits. It is suitable for protecting 2-serial-cell lithium-ion / lithium polymer rechargeable battery packs from overcharge, overdischarge, and overcurrent.
Use of an external overcurrent detection resistor enables this IC to provide high-accuracy overcurrent protection with less impact from temperature changes.
The S-82B2A Series has an input pin for charge-discharge control signal (CTL pin), allowing for charge-discharge control with an external signal. The S-82B2B Series has an input pin for power-saving signal (PS pin), allowing for reduction of current consumption by using an external signal to start the power-saving function.

Features

High-accuracy voltage detection circuit
Overcharge detection voltage n: 3.500 V to 4.800 V (5 mV step) Accuracy ±20 mV
Overcharge release voltage n: 3.100 V to 4.800 V*1 Accuracy ±50 mV
Overdischarge detection voltage n: 2.000 V to 3.000 V (10 mV step) Accuracy ±50 mV
Overdischarge release voltage n: 2.000 V to 3.400 V*2 Accuracy ±75 mV
Discharge overcurrent 1 detection voltage: 3 mV to 100 mV (0.5 mV step) Accuracy ±3.0 mV
Discharge overcurrent 2 detection voltage: 10 mV to 100 mV (1 mV step) Accuracy ±5 mV
Load short-circuiting detection voltage: 20 mV to 100 mV (1 mV step) Accuracy ±10 mV
Charge overcurrent detection voltage: −100 mV to −3 mV (0.5 mV step) Accuracy ±3.0 mV
Detection delay times are generated only by an internal circuit (external capacitors are unnecessary).
Charge-discharge control function (S-82B2A Series)
CTL pin control logic: Active “H”, active “L”
CTL pin internal resistance connection: Pull-up, pull-down
CTL pin internal resistance value: 1 MΩ to 10 MΩ (1 MΩ step)
Power-saving function (S-82B2B Series)
PS pin control logic: Active “H”, active “L”
PS pin internal resistance value: 1 MΩ to 10 MΩ (1 MΩ step)
0 V battery charge
Enabled, inhibited
Power-down function
S-82B2A Series: Available, unavailable
S-82B2B Series: Available
High-withstand voltage
VM pin and CO pin: Absolute maximum rating 28 V
Wide operation temperature range
Ta = −40°C to +85°C
Low current consumption
During operation: 3.0 μA typ., 6.0 μA max. (Ta = +25°C)
During power-down: 50 nA max. (Ta = +25°C)
During overdischarge: 1.0 μA max. (Ta = +25°C)
During power-saving (S-82B2B Series): 50 nA max. (Ta = +25°C)
Lead-free (Sn 100%), halogen-free

*1. Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage
(Overcharge hysteresis voltage can be selected as 0 V or from a range of 0.1 V to 0.4 V in 50 mV step.)

*2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage
(Overdischarge hysteresis voltage can be selected as 0 V or from a range of 0.1 V to 0.7 V in 100 mV step.)

Remark n = 1, 2

Applications

  • Lithium-ion rechargeable battery pack
  • Lithium polymer rechargeable 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)
Discharge
Overcurrent 1
Detection
Voltage
[VDIOV1]
(mV)
Discharge
Overcurrent 2
Detection
Voltage
[VDIOV2]
(mV)
Load Short-
circuiting
Detection
Voltage
[VSHORT]
(mV)
Charge
Overcurrent
Detection
Voltage
[VCIOV]
(mV)
Overcharge
Detection
Delay Time
[tCU]
(s)
Overdischarge
Detection
Delay Time
[tDL]
(ms)
Discharge
Overcurrent 1
Detection
Delay Time
[tDIOV1]
(s)
Discharge
Overcurrent 2
Detection
Delay Time
[tDIOV2]
(ms)
Load Short-
circuiting
Detection
Delay Time
[tSHORT]
(μs)
Charge
Overcurrent
Detection
Delay Time
[tCIOV]
(ms)
Charge-discharge
Inhibition Delay
Time
[tCTL]
(ms)
Power-saving
Delay Time
[tPS]
(ms)
CTL*1 /
PS*2 Pin
Control Logic
CTL Pin
Internal
Resistance
Connection
CTL [RCTL]*1 /
PS [RPS]*2 Pin
Internal
Resistance
Value
(MΩ)
CTL [VCTLH]*1 /
PS [VPSH]*2 Pin
Voltage "H"
(V)
CTL [VCTLL]*1 /
PS [VPSL]*2 Pin
Voltage "L"
(V)
0 V Battery
Charge
Power-down
Function
Product Name
S-82B2AAA-I8T1U7SNT-8A4.2304.0802.7002.90025.050100-15.01.01280.51216280848-Active “H”Pull-down3VDD - 0.90VSS + 0.70InhibitedAvailable
S-82B2BAA-I8T1U7SNT-8A4.4754.3252.1002.3007.01530-7.01.0643.751628016-2Active “H”-5VDD - 0.90VSS + 0.70Inhibited-
S-82B2AAA-A8T2U7HSNT-8(1616)4.2304.0802.7002.90025.050100-15.01.01280.51216280848-Active “H”Pull-down3VDD - 0.90VSS + 0.70InhibitedAvailable
S-82B2BAA-A8T2U7HSNT-8(1616)4.4754.3252.1002.3007.01530-7.01.0643.751628016-2Active “H”-5VDD - 0.90VSS + 0.70Inhibited-

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

Last modified: May. 26, 2022

  • 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.