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CM1255-ADH-M8A

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iCM(创芯微) Battery Management, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CM1255-ADH-M8A

iCM(创芯微) · Battery Management · MSOP-8

CM1255-ADH-M8A from iCM(创芯微), in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VCC power_in Chip supply terminal, with operating voltage 2.0 V to 25 V relative to VSS and absolute maximum rating VSS-0.3 V to VSS+35 V.
2 VC1 passive Positive voltage connection of cell 1 for cell-voltage sensing; absolute maximum cell voltage range is 0 V to 35 V.
3 VC2 passive Positive voltage connection of cell 2 and negative voltage connection of cell 1 for cell-voltage sensing; absolute maximum cell voltage range is 0 V to 35 V.
4 VC3 passive Positive voltage connection of cell 3 and negative voltage connection of cell 2 for cell-voltage sensing; absolute maximum cell voltage range is 0 V to 35 V.
5 VC4 passive Positive voltage connection of cell 4 and negative voltage connection of cell 3 for cell-voltage sensing; absolute maximum cell voltage range is 0 V to 35 V.
6 VC5 passive Positive voltage connection of cell 5 and negative voltage connection of cell 4 for cell-voltage sensing; absolute maximum cell voltage range is 0 V to 35 V.
7 VSS power_in Negative voltage connection of cell 5 and chip ground terminal; the reference for VCC and CO.
8 CO output Charge-control connection that drives the external charge MOSFET; for the ADH variant it is a CMOS dynamic-H output with high level equal to VCC, absolute maximum VSS-0.3 V to VCC+0.3 V, minimum sink current 0.4 mA and minimum output (source) current 50 µA.

Key specifications

Parameter Value
Manufacturer iCM(创芯微)
Package MSOP-8
Category Power Management (PMIC)
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Operating voltage (VCC to VSS) VOP 2 25 V VCC to VSS absolute voltage; Ta=+25°C 6
Normal power consumption IDD_OP 1.5 2.5 μA VC1=VC2=VC3=VC4=VC5=3.5V; Ta=+25°C 6
Overcharge protection voltage accuracy VOC -0.02 0.02 V Ta=+25°C; VC1=VC2=VC3=VC4=3.5V, VC5=3.5→4.4V. Printed as VOC-0.020 / VOC / VOC+0.020; min/max are offsets from VOC=4.350 V (this MPN, product list) 6
Overcharge protection voltage accuracy (wide-temp) VOC -0.025 0.025 V Ta=-20°C~+60°C; VC1=VC2=VC3=VC4=3.5V, VC5=3.5→4.4V. Offsets from VOC=4.350 V (this MPN) 6
Hysteresis voltage accuracy (VHC≥0.100V) VHC -0.05 0.05 V Ta=+25°C; VHC≥0.100V branch (applies: this MPN VHC=0.100 V); VC1=VC2=VC3=VC4=3.5V, VC5=4.4→3.5V. Offsets from VHC=0.100 V 6
Overcharge protection delay TOC 6 s Ta=+25°C; VC1=VC2=VC3=VC4=3.5V, VC5=3.5→4.6V. Printed min Toc0.7, max Toc1.3; Toc=6 s for this MPN 6
Recovery delay TOCR 6 16 80 ms Ta=+25°C; VC1=VC2=VC3=VC4=3.5V, VC5=4.6→3.5V 6
Reset delay TTR 3 6 9 ms Ta=+25°C (table header) 6
CO high-level output voltage (VCC option) VCOH -0.7 0.7 V Ta=+25°C; CO high level = VCC for this MPN. Printed VCC-0.7 / VCC / VCC+0.7; min/max are offsets from VCC 6
CO sink current ICOL 0.4 mA Ta=+25°C; CO sink (absorb) current 6
CO output current ICOH 50 μA Ta=+25°C; CO output current 6
Operating voltage (VCC to VSS) VOP 2 25 V VCC to VSS absolute voltage; Ta=-40°C~+85°C 7
Normal power consumption IDD_OP 1.5 3.5 μA VC1=VC2=VC3=VC4=VC5=3.5V; Ta=-40°C~+85°C 7
Overcharge protection voltage accuracy VOC -0.045 0.035 V Ta=-40°C~+85°C, row for @Ta=+25°C; VC1=VC2=VC3=VC4=3.5V, VC5=3.5→4.4V. Printed VOC-0.045 / VOC+0.035; offsets from VOC=4.350 V (this MPN) 7
Hysteresis voltage accuracy (VHC≥0.100V) VHC -0.08 0.08 V Ta=-40°C~+85°C; VHC≥0.100V branch (applies to this MPN); VC1=VC2=VC3=VC4=3.5V, VC5=4.4→3.5V. Offsets from VHC=0.100 V 7
Overcharge protection delay TOC 6 s Ta=-40°C~+85°C; VC1=VC2=VC3=VC4=3.5V, VC5=3.5→4.6V. Printed min Toc0.5, max Toc1.5; Toc=6 s for this MPN 7
Recovery delay TOCR 3 16 120 ms Ta=-40°C~+85°C; VC1=VC2=VC3=VC4=3.5V, VC5=4.6→3.5V 7
Reset delay TTR 1 6 12 ms Ta=-40°C~+85°C 7
CO high-level output voltage (VCC option) VCOH -0.7 0.7 V Ta=-40°C~+85°C; CO high level = VCC for this MPN. Printed VCC-0.7 / VCC / VCC+0.7; min/max are offsets from VCC 7
CO sink current ICOL 0.4 mA Ta=-40°C~+85°C; CO sink (absorb) current 7
CO output current ICOH 50 μA Ta=-40°C~+85°C; CO output current 7
Power supply voltage VCC VCC -0.3 35 V Relative to VSS: printed VSS-0.3 ~ VSS+35; min/max are offsets from VSS 5
Cell voltage (VC1-VC2 ... VC5-VSS) VCELL 0 35 V Each cell: VC1-VC2, VC2-VC3, VC3-VC4, VC4-VC5, VC5-VSS 5
CO output terminal voltage VCO -0.3 0.3 V CO pin; printed VSS-0.3 ~ VCC+0.3; min offset from VSS, max offset from VCC 5
Operating ambient temperature TOPR -40 85 °C 5
Storage temperature TSTG -55 125 °C 5

CAD (KiCad official)

  • Symbol: CM1255-ADH-M8A
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: cm1255-adh-m8a-etched.step / cm1255-adh-m8a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cm1255-adh-m8a.step / cm1255-adh-m8a.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: iCM(创芯微) datasheet (16 pp, sha256 206773ab842cb3a0, retrieved 2026-11-10, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF