component
CM2056-B5S
Public Made by Adomby adom
iCM(创芯微) , SSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownCM2056-B5S
iCM(创芯微) · IC · SSOP-24
CM2056-B5S from iCM(创芯微), in a SSOP-24. 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 | VROUT | power_out | Internal LDO output that powers the AFE and provides the external ADC reference voltage; maximum output current is 3 mA. |
| 2 | ALT | output | Alarm interrupt output to the MCU that is high by default and goes low on an alarm until register 08H is cleared. |
| 3 | VCELL | output | Analog output of the selected cell voltage, scaled by 0.6 so that cell voltage = VCELL/0.6, with measurement accuracy of ±15 mV. |
| 4 | VIOUT | output | Analog output of the battery current sample, 2.5 V at zero load; above 2.5 V indicates charging and below 2.5 V indicates discharging. |
| 5 | CO | output | Charge MOSFET drive output controlled via CTLC, with high level 8-12 V when VCC > 12 V. |
| 6 | SDA | bidirectional | I2C data line to the MCU, supporting clock rates up to 400 kHz. |
| 7 | SCL | input | I2C clock line from the MCU, supporting clock rates up to 400 kHz. |
| 8 | CTLC | input | MCU control input that switches the CO output path on or off. |
| 9 | CTLD | input | MCU control input that switches the DO output path on or off. |
| 10 | RST | input | Reset input; a high level longer than 100 µs resets the AFE. |
| 11 | NC | unconnected | Not connected (floating) inside the package. |
| 12 | DO | output | Discharge MOSFET drive output controlled via CTLD, with low output level of 0.5 V maximum. |
| 13 | SRP | input | Positive current-sense input, connected across the main-circuit sense resistor Rsense. |
| 14 | SRN | input | Negative current-sense input, connected across the main-circuit sense resistor Rsense. |
| 15 | VSS | power_in | Ground reference for the device. |
| 16 | VC1 | power_in | Positive input of cell 1 and negative input of cell 2 for cell voltage sensing. |
| 17 | VC2 | power_in | Positive input of cell 2 and negative input of cell 3 for cell voltage sensing. |
| 18 | VC3 | power_in | Positive input of cell 3 and negative input of cell 4 for cell voltage sensing. |
| 19 | VC4 | power_in | Positive input of cell 4 and negative input of cell 5 for cell voltage sensing. |
| 20 | VC5 | power_in | Positive input of cell 5 for cell voltage sensing; absolute maximum VC pin-to-ground voltage is VSS+40 V. |
| 21 | NC | unconnected | Not connected (floating) inside the package. |
| 22 | NC | unconnected | Not connected (floating) inside the package. |
| 23 | NC | unconnected | Not connected (floating) inside the package. |
| 24 | VCC | power_in | Power supply input; normal operating voltage is 6-40 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | iCM(创芯微) |
| Package | SSOP-24 |
| Category | |
| Pins | 24 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 输入电压 (正常工作电压) | VIN | 6 | 40 | V | 正常工作电压 | 6 | |
| 电池电压测量精度 | VCELL | -15 | 15 | mV | T=25°C; VCn-VC(n-1) = 1.5 ~ 4.5V | 6 | |
| 电池电压测量精度 | VCELL | -20 | 20 | mV | T=-20°C ~ 60°C | 6 | |
| 电池电压输入范围 | VVCIN | 1.5 | 4.5 | V | 6 | ||
| 电流采样输入电压范围 5倍 | VCUIN5 | -100 | 450 | mV | 6 | ||
| 电流采样输入电压范围 10倍 | VCUIN10 | -50 | 225 | mV | 6 | ||
| 电流采样输入电压范围 20倍 | VCUIN20 | -25 | 112.5 | mV | 6 | ||
| 电流采样输入电压范围 40倍 | VCUIN40 | -12.5 | 56.25 | mV | 6 | ||
| 5倍电流采样精度 | GCUA5 | -2.5 | 2.5 | mV | 6 | ||
| 10倍电流采样精度 | GCUA10 | -5 | 5 | mV | 6 | ||
| 20倍电流采样精度 | GCUA20 | -10 | 10 | mV | 6 | ||
| 40倍电流采样精度 | GCUA40 | -20 | 20 | mV | 6 | ||
| 0负载 VIOUT 电压 | VCU0 | 2.475 | 2.5 | 2.525 | V | 0 负载 | 6 |
| 电池电压采样输入电流 | IVC | 5 | uA | VBAT = 36V | 6 | ||
| 电压采样输出延迟时间 | Tvcset | 100 | us | CVC = 1nF | 6 | ||
| 5V LDO 输入电压 | VCC | 6 | V | 5V LDO | 7 | ||
| 5V LDO 输出电压 VROUT (Sleep 模式) | VROUT | 4.9 | 5 | 5.1 | V | Sleep 模式 | 7 |
| 5V LDO 输出电压 VROUT (Normal 模式) | VROUT | 4.95 | 5 | 5.05 | V | Normal 模式 | 7 |
| 线性调整率 | ΔVLINE | 0.2 | %/V | VIN = 6 ~ 40V, IOUT = 3mA | 7 | ||
| 负载调整率 | ΔVLOAD | 60 | mV | VIN = 10V, 1mA ≤ IOUT ≤ 30mA | 7 | ||
| VROUT 温度系数 | ΔVROUT/ΔTA | -2 | 2 | mV/°C | IOUT=3mA, 0°C < TA < 70°C | 7 | |
| CO、DO 高输出电平 (VCC>12V) | VH | 8 | 10 | 12 | V | VCC>12V | 7 |
| DO 低输出电平 | VL | 0.5 | V | 7 | |||
| 电源电压 (绝对最大) | VCC | 40 | V | Ta=25°C; referenced to VSS, printed VSS-0.3 ~ VSS+40 | 5 | ||
| 电源引脚对地电压 (绝对最大) | VC | 40 | V | VCn (n=1~5); referenced to VSS, printed VSS-0.3 ~ VSS+40 | 5 | ||
| 电源引脚之间电压 (绝对最大) | VCn | -30 | 30 | V | VCn+1 (n=1~4); printed VCn-30 ~ VCn+30 | 5 | |
| 其他引脚电压 (绝对最大) | VIO | 6.5 | V | SRP, SRN, VCELL, SDA, SCL, VIOUT, ALT, VROUT, CTLC, CTLD, RST; referenced to VSS, printed VSS-0.3 ~ VSS+6.5 | 5 | ||
| CO、DO 输出电压 (绝对最大) | VO | 40 | V | DO, CO; referenced to VSS, printed VSS-0.3 ~ VSS+40 | 5 | ||
| 工作环境温度 | TOPR | -40 | 85 | °C | 5 | ||
| 保存温度范围 | TSTG | -40 | 150 | °C | 5 | ||
| 工作结温 | TJ | 150 | °C | 5 | |||
| 热电阻 | θJA | 180 | °C/W | 5 | |||
| ESD HBM 模式 | ESD | 2000 | V | HBM 模式 | 5 |
CAD (KiCad official)
- Symbol:
CM2056-B5S - Footprint:
Package_SO:SSOP-24_5.3x8.2mm_P0.65mm - 3D model: SSOP-24 (KiCad packages3D, STEP)
- 3D model files:
cm2056-b5s-etched.step/cm2056-b5s-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cm2056-b5s.step/cm2056-b5s.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: iCM(创芯微) datasheet (21 pp, sha256
2f74953c09882f29, retrieved 2026-10-19, 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).