component
CM1255-CCH-M8A
Public Made by Adomby adom
iCM(创芯微) , MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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CM1255-CCH-M8A
iCM(创芯微) · IC · MSOP-8
CM1255-CCH-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; the operating voltage VCC to VSS is 2.0 V to 25 V, and the absolute maximum rating is VSS-0.3 V to VSS+35 V. |
| 2 | VC1 | input | Positive voltage terminal of battery cell 1; each cell voltage has an absolute maximum rating of 0 to 35 V. |
| 3 | VC2 | input | Positive voltage terminal of battery cell 2 and negative voltage connection of battery cell 1; each cell voltage has an absolute maximum rating of 0 to 35 V. |
| 4 | VC3 | input | Positive voltage terminal of battery cell 3 and negative voltage connection of battery cell 2; each cell voltage has an absolute maximum rating of 0 to 35 V. |
| 5 | VC4 | input | Positive voltage terminal of battery cell 4 and negative voltage connection of battery cell 3; each cell voltage has an absolute maximum rating of 0 to 35 V. |
| 6 | VC5 | input | Positive voltage terminal of battery cell 5 and negative voltage connection of battery cell 4; each cell voltage has an absolute maximum rating of 0 to 35 V. |
| 7 | VSS | power_in | Negative voltage connection of battery cell 5 and chip ground terminal. |
| 8 | CO | output | Charge control connection that drives the external charge-control MOSFET; CO voltage is limited to VSS-0.3 V to VCC+0.3 V, and for CM1255-CCH-M8A the CO high level is VCC with dynamic-H output logic. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | iCM(创芯微) |
| Package | MSOP-8 |
| Category | |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage VCC (operating), VCC to VSS, Ta=+25°C | VOP | 2 | 25 | V | VCC 对 VSS 绝对电压 | 6 | |
| Normal power consumption, Ta=+25°C | IDD_OP | 1.5 | 2.5 | μA | VC1=VC2=VC3=VC4=VC5=3.5V | 6 | |
| Overcharge protection voltage, Ta=+25°C (VOC=4.300 V for CCH; printed VOC-0.020 / VOC+0.020) | VOC | -0.02 | 4.3 | 0.02 | V | VC1=VC2=VC3=VC4=3.5V, VC5=3.5 → 4.4V (@Ta=25°C) | 6 |
| Overcharge protection voltage, Ta=-20°C to +60°C (printed VOC-0.025 / VOC+0.025) | VOC | -0.025 | 4.3 | 0.025 | V | VC1=VC2=VC3=VC4=3.5V, VC5=3.5 → 4.4V (@Ta=-20°C ~ +60°C) | 6 |
| Overcharge recovery delay TOCR, Ta=+25°C | TOCR | 6 | 16 | 80 | ms | VC1=VC2=VC3=VC4=3.5V, VC5=4.6 → 3.5V | 6 |
| Reset delay TTR, Ta=+25°C | TTR | 3 | 6 | 9 | ms | 6 | |
| CO terminal H output voltage, CO high level = VCC option (printed VCC-0.7 / VCC+0.7; typ = VCC not numeric) | VCOH | -0.7 | 0.7 | V | 6 | ||
| CO absorption current | ICOL | 0.4 | mA | 6 | |||
| CO output current | ICOH | 50 | μA | 6 | |||
| Supply voltage VCC (operating), VCC to VSS, Ta=-40°C to +85°C | VOP | 2 | 25 | V | VCC 对 VSS 绝对电压 | 7 | |
| Normal power consumption, Ta=-40°C to +85°C | IDD_OP | 1.5 | 3.5 | μA | VC1=VC2=VC3=VC4=VC5=3.5V | 7 | |
| Overcharge protection voltage, row labelled @Ta=25°C (printed VOC-0.045 / VOC+0.035) | VOC | -0.045 | 4.3 | 0.035 | V | VC1=VC2=VC3=VC4=3.5V, VC5=3.5 → 4.4V (@Ta=25°C) | 7 |
| Overcharge recovery delay TOCR, Ta=-40°C to +85°C | TOCR | 3 | 16 | 120 | ms | VC1=VC2=VC3=VC4=3.5V, VC5=4.6 → 3.5V | 7 |
| Reset delay TTR, Ta=-40°C to +85°C | TTR | 1 | 6 | 12 | ms | 7 | |
| CO terminal H output voltage, CO high level = VCC option, Ta=-40°C to +85°C (printed VCC-0.7 / VCC+0.7) | VCOH | -0.7 | 0.7 | V | 7 | ||
| CO absorption current, Ta=-40°C to +85°C | ICOL | 0.4 | mA | 7 | |||
| CO output current, Ta=-40°C to +85°C | ICOH | 50 | μA | 7 | |||
| VCC absolute maximum (printed VSS-0.3 ~ VSS+35; min/max are offsets from VSS) | VCC | -0.3 | 35 | V | applies to terminal VCC, referenced to VSS | 5 | |
| Cell voltage absolute maximum | VCELL | 0 | 35 | V | VC1-VC2, VC2-VC3, VC3-VC4, VC4-VC5, VC5-VSS | 5 | |
| CO output terminal voltage absolute maximum (printed VSS-0.3 ~ VCC+0.3; min referenced to VSS, max referenced to VCC) | VCO | -0.3 | 0.3 | V | applies to terminal CO; min referenced to VSS, max referenced to VCC | 5 | |
| Operating ambient temperature | TOPR | -40 | 85 | °C | 5 | ||
| Storage temperature range | TSTG | -55 | 125 | °C | 5 | ||
| Overcharge protection delay TOC (2 s for CCH; printed Toc0.7 / Toc1.3, not computed), Ta=+25°C | TOC | 2 | s | VC1=VC2=VC3=VC4=3.5V, VC5=3.5 → 4.6V | 6 | ||
| Overcharge protection delay TOC (2 s for CCH; printed Toc0.5 / Toc1.5, not computed), Ta=-40°C to +85°C | TOC | 2 | s | VC1=VC2=VC3=VC4=3.5V, VC5=3.5 → 4.6V | 7 |
CAD (KiCad official)
- Symbol:
CM1255-CCH-M8A - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
cm1255-cch-m8a-etched.step/cm1255-cch-m8a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cm1255-cch-m8a.step/cm1255-cch-m8a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: iCM(创芯微) datasheet (16 pp, sha256
d24c8f9661c5caf1, retrieved 2026-10-17, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).