Power Management ICs

Battery Protection IC for 3-Serial to 5-Serial Cell Pack (Secondary Protection) S-8215A Series

The S-8215A Series is used for secondary protection of lithium-ion rechargeable batteries, and incorporates high-accuracy voltage detection circuits and delay circuits. Short-circuiting between cells makes it possible for serial connection of 3 cells to 5 cells.


High-accuracy voltage detection circuit for each cell
Overcharge detection voltage n (n = 1 to 5)
 3.60 V to 4.70 V (in 50 mV steps)
 Accuracy ±25 mV (+25°C)
 Accuracy ±30 mV (−5°C to +55°C)
Overcharge hysteresis voltage n (n = 1 to 5)
 0.0 mV to −550 mV (in 50 mV steps)
 −300 mV to −550 mV Accuracy ±20%
 −100 mV to −250 mV Accuracy ±50 mV
 0.0 mV to−50 mV  Accuracy ±25 mV
Delay times for overcharge detection can be set by an internal circuit only (external capacitors are unnecessary)
Output form is selectable
CMOS output, Nch open-drain output, Pch open-drain output
Output logic is selectable
Active “H”, Active “L”
High withstand voltage
Absolute maximum rating: 28 V
Wide operating voltage range
3.6 V to 26 V
Wide operating temperature range
−40°C to +85°C
Low current consumption
 At Vcun – 1.0 V for each cell: 3.0 µA max. (+25°C)
 At 2.3 V for each cell: 1.7 µA max. (+25°C)
Lead-free, Sn 100%, halogen-free (Refer to “Product Name Structure” for details.)


  • Lithium-ion rechargeable battery packs (for secondary protection)

Parts List

Product namePackageOvercharge
Delay Time
Output FormOutput Logic
Product name
S-8215AAA-K8T2UTMSOP-84.300-0.3004.0CMOS outputActive "H"
S-8215AAB-K8T2UTMSOP-84.275-0.0502.0Nch open-drain outputActive "L"
S-8215AAC-K8T2UTMSOP-84.150-0.2501.0CMOS outputActive "H"
S-8215AAD-K8T2UTMSOP-84.350-0.2502.0CMOS outputActive "H"
S-8215AAE-K8T2UTMSOP-84.325-0.0501.0Nch open-drain outputActive "L"
S-8215AAF-K8T2UTMSOP-84.220-0.1001.0CMOS outputActive "H"
S-8215AAH-K8T2UTMSOP-84.325-0.3001.0Nch open-drain outputActive "L"
S-8215AAI-K8T2UTMSOP-84.250-0.2501.0CMOS outputActive "H"
S-8215AAJ-K8T2UTMSOP-84.400-0.1002.0CMOS outputActive "H"
S-8215AAK-K8T2UTMSOP-84.150-0.0502.0Nch open-drain outputActive "L"
S-8215AAL-K8T2UTMSOP-84.150-0.5002.0Nch open-drain outputActive "L"
S-8215AAM-K8T2UTMSOP-84.150-0.0502.0CMOS outputActive "L"
S-8215AAN-K8T2UTMSOP-84.150-0.5002.0CMOS outputActive "L"
S-8215AAO-K8T2UTMSOP-84.350-0.2504.0CMOS outputActive "H"
S-8215AAP-K8T2UTMSOP-84.275-0.5001.0CMOS outputActive "H"
S-8215AAQ-K8T2UTMSOP-84.275-0.0501.0CMOS outputActive "H"
S-8215AAR-K8T2UTMSOP-84.500-0.1004.0CMOS outputActive "H"
S-8215AAS-K8T2UTMSOP-84.275-0.2002.0CMOS outputActive "L"
S-8215AAT-K8T2UTMSOP-84.275-0.0502.0CMOS outputActive "L"
S-8215AAU-K8T2UTMSOP-83.750-0.1001.0CMOS outputActive "H"
S-8215AAV-K8T2UTMSOP-84.300-0.3001.0CMOS outputActive "H"
S-8215AAW-K8T2UTMSOP-84.325-0.0508.0CMOS outputActive "H"
S-8215AAX-K8T2UTMSOP-84.325-0.3008.0CMOS outputActive "H"
S-8215AAY-K8T2UTMSOP-84.325-0.4008.0CMOS outputActive "H"
S-8215AAZ-K8T2UTMSOP-84.275-0.0501.0Nch open-drain outputActive "L"
S-8215AAA-I8T1USNT-8A4.300-0.3004.0CMOS outputActive "H"
S-8215AAG-I8T1USNT-8A4.220-0.0501.0CMOS outputActive "H"
S-8215AAV-I8T1USNT-8A4.300-0.3001.0CMOS outputActive "H"

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

Last modified: Apr. 08, 2019

  • 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.