component
CM1048-AT
Public Made by Adomby adom
iCM(创芯微) Battery Management, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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PCB Footprint
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Datasheet
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README
markdownCM1048-AT
iCM(创芯微) · Battery Management · TSSOP-16
CM1048-AT from iCM(创芯微), in a TSSOP-16. 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 | Positive supply input, also the positive connection for battery 4; absolute maximum rating is VSS-0.3 V to VSS+30 V. |
| 2 | VC4 | power_in | Positive voltage connection for battery 4; absolute maximum rating is VSS-0.3 V to VSS+30 V. |
| 3 | VC4 | power_in | Positive voltage connection for battery 4 (second VC4 pin, as printed); absolute maximum rating is VSS-0.3 V to VSS+30 V. |
| 4 | VC3 | power_in | Connection point for the negative terminal of battery 4 and the positive terminal of battery 3; absolute maximum rating is VSS-0.3 V to VSS+30 V. |
| 5 | VC2 | power_in | Connection point for the negative terminal of battery 3 and the positive terminal of battery 2; absolute maximum rating is VSS-0.3 V to VSS+30 V. |
| 6 | VC1 | power_in | Connection point for the negative terminal of battery 2 and the positive terminal of battery 1; absolute maximum rating is VSS-0.3 V to VSS+30 V. |
| 7 | VSS | power_in | Chip ground and negative connection for battery 1, the reference for all voltage ratings. |
| 8 | SEL | input | Series-count selection terminal; absolute maximum rating is VSS-0.3 V to VSS+5.0 V. |
| 9 | TEC | input | Discharge overcurrent delay adjustment terminal, where external capacitor CTEC sets TEC1 (TEC1 = 10 × CTEC, with CTEC in nF and TEC1 in ms); absolute maximum rating is VSS-0.3 V to VSS+5.0 V. |
| 10 | CLR | passive | Resistor connection to the NTC that sets the charge low-temperature protection point; absolute maximum rating is VSS-0.3 V to VSS+5.0 V. |
| 11 | DHR | passive | Resistor connection to the NTC that sets the discharge high-temperature protection point; absolute maximum rating is VSS-0.3 V to VSS+5.0 V. |
| 12 | CHR | passive | Resistor connection to the NTC that sets the charge high-temperature protection point; absolute maximum rating is VSS-0.3 V to VSS+5.0 V. |
| 13 | VINI | input | Overcurrent detection input that senses the discharge/charge current voltage; absolute maximum rating is VSS-0.3 V to VSS+30 V. |
| 14 | DO | output | Discharge MOSFET control output that inverts to turn off discharge on overdischarge or overcurrent faults; absolute maximum rating is VSS-0.3 V to VSS+30 V. |
| 15 | CO | output | Charge MOSFET control output that inverts to turn off charging on overcharge or other charge faults; absolute maximum rating is VSS-30 V to VSS+30 V. |
| 16 | VM | input | Charger and load detection terminal used for charger detection and load detection; absolute maximum rating is VSS-30 V to VSS+30 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | iCM(创芯微) |
| Package | TSSOP-16 |
| Category | Power Management (PMIC) |
| Pins | 16 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 正常工作电流 | IVCC | 10 | 15 | μA | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V | 7 | |
| 过充电保护延时 | TOC | 0.7 | 1 | 1.3 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 4.4V | 7 |
| 过充电解除延时 | TOCR | 180 | 256 | 332 | ms | VCn - VCn+1 = 3.5V, VC1-VSS = 4.4 → 3.5V | 7 |
| 过放电解除电压 | VODR | -0.08 | 3 | 0.08 | V | VCn - VCn+1 = 3.5V, VC1-VSS = 2.0 → 3.5V | 7 |
| 过放电保护延时 | TOD | 0.7 | 1 | 1.3 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 2.0V | 7 |
| 过放电解除延时 | TODR | 179 | 256 | 333 | ms | VCn - VCn+1 = 3.5V, VC1-VSS = 2.0 → 3.5V | 7 |
| 禁充电压 | VLV | 1.125 | 1.5 | 1.875 | V | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 1.2V | 7 |
| 禁充解除电压 | VLVR | 1.1 | 1.52 | 1.94 | V | VCn - VCn+1 = 3.5V, VC1-VSS = 1.2 → 3.5V | 7 |
| 禁充延时 | TLV | 1 | 1.5 | 2 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 1.2V | 7 |
| 放电过流1保护电压 | VEC1 | -0.005 | 0.05 | 0.005 | V | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.18V | 7 |
| 放电过流1保护延时 | TEC1 | 0.7 | 1 | 1.3 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.18V, CTEC=0.1μF (±1%) | 7 |
| 放电过流2保护电压 | VEC2 | -0.01 | 0.1 | 0.01 | V | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.35V | 7 |
| 放电过流2保护延时 | TEC2 | 70 | 100 | 130 | ms | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.35V, CTEC=0.1μF (±1%) | 7 |
| 短路保护延时 | TSHORT | 150 | 250 | 350 | μs | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.8V | 7 |
| 放电过流解除延时 | TECR | 22 | 32 | 42 | ms | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0.8 → 0V | 7 |
| 充电过流保护延时 | TCHA | 180 | 256 | 332 | ms | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → -1.0V | 8 |
| 充电过流解除延时 | TCHAR | 45 | 64 | 83 | ms | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = -1V → 0V | 8 |
| 充电高温保护温度 | TCH | -3 | 3 | °C | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k | 8 | |
| 充电高温解除温度 | TCHR | -3 | 3 | °C | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k | 8 | |
| 放电高温保护温度 | TDH | -3 | 3 | °C | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k | 8 | |
| 放电高温解除温度 | TDHR | -3 | 3 | °C | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k | 8 | |
| 充电高温保护延时 | DTCH | 1.05 | 1.5 | 1.95 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k | 8 |
| 充电高温解除延时 | DTCHR | 1.05 | 1.5 | 1.95 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k | 8 |
| 放电高温保护延时 | DTDH | 1.05 | 1.5 | 1.95 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k | 8 |
| 放电高温解除延时 | DTDHR | 1.05 | 1.5 | 1.95 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k | 8 |
| 充电低温保护温度 | TCL | -3 | 3 | °C | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M | 8 | |
| 充电低温解除温度 | TCLR | -3 | 3 | °C | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 3M → 10k | 8 | |
| 放电低温保护温度 | TDL | -3 | 3 | °C | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M | 8 | |
| 放电低温解除温度 | TDLR | -3 | 3 | °C | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 3M → 10k | 8 | |
| 充电低温保护延时 | DTCL | 1.05 | 1.5 | 1.95 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M | 8 |
| 充电低温解除延时 | DTCLR | 1.05 | 1.5 | 1.95 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 3M → 10k | 8 |
| 放电低温保护延时 | DTDL | 1.05 | 1.5 | 1.95 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M | 8 |
| 放电低温解除延时 | DTDLR | 1.05 | 1.5 | 1.95 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 3M → 10k | 8 |
| 检测电压 | VSTS | 1 | 4 | 7 | mV | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 10mV | 9 |
| 检测延时 | TSTS | 3 | 4.5 | 6 | ms | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 10mV | 9 |
| 休眠延时 | TSLP | 22 | 32 | 42 | s | VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 1.5V | 9 |
| 电源电压 | VCC | -0.3 | 30 | V | VSS-0.3 ~ VSS+30 (relative to VSS) | 6 | |
| 输入电压0 | VCELL | -0.3 | 30 | V | VCn (n=1~4): VSS-0.3 ~ VSS+30 | 6 | |
| 输入电压1 | VIN1 | -0.3 | 5 | V | SEL, TEC, CLR, DHR, CHR: VSS-0.3 ~ VSS+5.0 | 6 | |
| 输入电压2 | VIN2 | -30 | 30 | V | VM, CO: VSS-30 ~ VSS+30 | 6 | |
| 输入电压3 | VIN3 | -0.3 | 30 | V | DO, VINI: VSS-0.3 ~ VSS+30 | 6 | |
| 工作环境温度 | TOPR | -40 | 85 | °C | 6 | ||
| 保存温度范围 | TSTG | -55 | 125 | °C | 6 | ||
| 正常工作电流 (Ta=-40~+85°C) | IVCC | 10 | 18 | μA | Ta = -40°C ~ +85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V | 10 | |
| 过放电解除电压 (Ta=-40~+85°C) | VODR | -0.1 | 3 | 0.1 | V | Ta = -40°C ~ +85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 2.0 → 3.5V | 10 |
| 放电过流2保护电压 (Ta=-40~+85°C) | VEC2 | -0.02 | 0.1 | 0.02 | V | Ta = -40°C ~ +85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.35V | 10 |
CAD (KiCad official)
- Symbol:
CM1048-AT - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
cm1048-at-etched.step/cm1048-at-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cm1048-at.step/cm1048-at.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
273f122a93b03dfc, 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).