Power Management ICs

Battery Protection IC with Discharge Control Function for 1-Cell Pack S-8250A Series

DatasheetJul. 29, 2019

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The S-8250A Series is a protection IC for 1-cell lithium-ion / lithium polymer rechargeable batteries and includes high-accuracy voltage detection circuits and delay circuits.
The S-8250A Series is suitable for protecting 1-cell lithium-ion / lithium polymer rechargeable battery packs from overcharge, overdischarge, overcurrent, and controlling discharge by external signal. By adjusting power supply voltage dependency of discharge overcurrent detection voltage in accordance with ON resistance of the charge-discharge control FET, the S-8250A Series realizes high-accuracy discharge overcurrent detection.

Features

High-accuracy discharge overcurrent detection circuit
Discharge overcurrent detection voltage : 0.05 V to 0.15 V (1 mV step)
Accuracy ±10 mV (Ta = +25°C)
(Power supply voltage dependency can be set in accordance with ON resistance of the charge-discharge control FET.)
High-accuracy voltage detection circuit
Overcharge detection voltage : 4.1 V to 4.6 V (5 mV step)
Accuracy ±20 mV (Ta = +25°C)
Accuracy ±25 mV (Ta = −10°C to +60°C)
Overcharge release voltage : 3.7 V to 4.6 V*1 Accuracy ±30 mV
Overdischarge detection voltage : 2.0 V to 2.8 V (10 mV step) Accuracy ±50 mV
Overdischarge release voltage : 2.0 V to 3.0 V*2 Accuracy ±100 mV
Load short-circuiting detection voltage : 0.25 V to 0.50 V (50 mV step)
Accuracy ±50 mV
Charge overcurrent detection voltage : −0.20 V to −0.025 V (25 mV step) Accuracy ±15 mV
Detection delay times are generated only by an internal circuit (External capacitors are unnecessary).
Discharge control function
CTL pin control logic is selectable: Active “H”, active “L”
CTL pin internal resistance connection is selectable: Pull-up, pull-down
CTL pin internal resistance value is selectable: 1.0 MΩ, 2.0 MΩ, 3.0 MΩ,
4.0 MΩ, 5.0 MΩ
Discharge inhibition status latch function is selectable : Available, unavailable
0 V battery charge function is selectable : Available, unavailable
Power-down function is selectable
: Available, unavailable
Release condition of discharge overcurrent status is selectable
Load disconnection, charger connection
High-withstand voltage device is used for charger connection pins:
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: 2.0 μA typ., 4.0 μA max. (Ta = +25°C)
During power-down: 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 from a range of 0 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 from a range of 0 V to 0.7 V in 100 mV step.)

Applications

  • Lithium-ion rechargeable battery packs
  • Lithium-polymer rechargeable battery packs

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
Detection
Voltage
[VDIOV]
(V)
*VDD=3.0V
Discharge
Overcurrent
Detection
Voltage
[VDIOV]
(V)
*VDD=3.4V
Discharge
Overcurrent
Detection
Voltage
[VDIOV]
(V)
*VDD=4.0V
Load
Short-circuiting
Detection
Voltage
[VSHORT]
(V)
Charge
Overcurrent
Detection
Voltage
[VCIOV]
(V)
Overcharge
Detection
Delay Time
[tCU]
(s)
Overdischarge
Detection
Delay Time
[tDL]
(ms)
Discharge
Overcurrent
Detection
Delay Time
[tDIOV]
(ms)
Load
Short-circuiting
Detection
Delay Time
[tSHORT]
(μs)
Charge
Overcurrent
Detection
Delay Time
[tCIOV]
(ms)
Discharge
Inhibition
Delay Time
[tCTL]
(ms)
Product Name
S-8250AAB-I6T1USNT-6A4.2804.1802.3002.3000.1220.1130.1040.500−0.1001.0128322808256
S-8250AAE-I6T1USNT-6A4.4104.2102.3002.3000.0370.0360.0340.500−0.0751.0321628016256
S-8250AAG-I6T1USNT-6A4.4254.2252.5002.5000.0810.0760.0710.500−0.100 1.0128322808256

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

Last modified: Sep. 18, 2015

  • 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.