Power Management ICs

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

DatasheetJul. 29, 2019

The S-8250B 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-8250B Series is suitable for protecting 1-cell lithium-ion / lithium polymer rechargeable battery packs from overcharge, overdischarge and overcurrent. By adjusting power supply voltage dependency of discharge overcurrent detection voltage in accordance with ON resistance of the charge-discharge control FET, the S-8250B 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 −0.05 V (25 mV step)
Accuracy ±15 mV
Detection delay times are generated only by an internal circuit (External capacitors are unnecessary).
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
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)
Product Name
S-8250BAB-I6T1USNT-6A4.4254.2252.5002.9000.1340.1250.1150.300−0.1001.03282808
S-8250BAC-I6T1USNT-6A4.4154.2152.5002.9000.0600.0560.0500.700−0.0501.03282808
S-8250BAF-I6T1USNT-6A4.4254.2252.3002.5000.0720.0690.0660.225−0.0401.03282808
S-8250BAK-I6T1USNT-6A4.4254.2252.3002.5000.1040.0970.0890.225−0.0551.03282808
S-8250BAL-I6T1USNT-6A4.4254.2252.5002.8000.0610.0600.0570.250−0.0551.06482808
S-8250BAM-I6T1USNT-6A4.4754.2752.5002.9000.0710.0680.0630.200−0.0501.064162808
S-8250BAN-I6T1USNT-6A4.4704.2202.3002.3000.1130.1080.1000.500−0.0751.0321628016
S-8250BAS-I6T1USNT-6A4.2804.2802.8002.8000.0540.0520.0500.500−0.1001.0641628016
S-8250BAV-I6T1USNT-6A4.3304.1302.0002.0000.1100.1000.0910.300−0.0501.03282808

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

Last modified: Sep. 24, 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.