CM1041-DT 4-Series Lithium-Ion/Polymer Battery Protection IC - TSSOP-16 Package is a highly integrated battery protection IC designed for 4-cell (3S) lithium-ion and lithium-polymer battery packs. It provides precise monitoring of individual cell voltages and offers comprehensive protection against overcharge, over-discharge, overcurrent, short-circuit, and charging overcurrent conditions. Housed in a compact TSSOP-16 package, the IC is ideal for battery management systems (BMS), portable electronics, power tools, energy storage systems, and rechargeable battery packs.
CM1041-DT 4-Series Lithium-Ion/Polymer Battery Protection IC Datasheet
| Parameter | Value |
|---|---|
| Product Type | Battery Protection IC |
| Model | CM1041-DT |
| Battery Configuration | 4-Series (4S) Lithium-Ion / Lithium-Polymer |
| Package Type | TSSOP-16 |
| Cell Monitoring | Individual Cell Voltage Detection |
| Protection Functions | Overcharge, Over-discharge, Overcurrent, Charge Overcurrent, Short Circuit |
| Overcharge Detection | Supported |
| Over-discharge Detection | Supported |
| Overcurrent Detection | Supported |
| Short Circuit Protection | Supported |
| Operating Voltage | Suitable for 3S Li-ion/Li-Po Battery Packs |
| Standby Current | Low Power Consumption |
| Operating Temperature | -40°C to +85°C |
| Mounting Type | Surface Mount (SMD) |
| Applications | Battery Management Systems, Rechargeable Battery Packs, Power Tools, Portable Electronics, Energy Storage Systems |
| Package | TSSOP-16 |
| Compliance | RoHS |

| Pin | Name | Description |
|---|---|---|
| 1 | VCC | Battery pack positive supply input (Cell 1 positive terminal) |
| 2 | VC1 | Cell 1 positive voltage sensing input |
| 3 | VC2 | Cell 1 negative / Cell 2 positive voltage sensing input |
| 4 | VC3 | Cell 2 negative / Cell 3 positive voltage sensing input |
| 5 | VC4 | Cell 3 negative / Cell 4 positive voltage sensing input |
| 6 | NC | No Connection (leave floating) |
| 7 | VSS | Battery pack negative (Ground, Cell 4 negative terminal) |
| 8 | TOC | Overcharge protection delay capacitor connection |
| 9 | TOD | Over-discharge protection delay capacitor connection |
| 10 | TEC | Overcurrent protection delay capacitor connection |
| 11 | RTS | NTC temperature sensor input |
| 12 | RTV | Temperature threshold adjustment resistor connection |
| 13 | VINI | Overcurrent detection (current sense) input |
| 14 | DO | Discharge MOSFET gate output |
| 15 | CO | Charge MOSFET gate output |
| 16 | VM | Overcurrent protection lock, charger detection, and load detection input |
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1 x CM1041-DT 4-Series Lithium-Ion/Polymer Battery Protection IC - TSSOP-16 Package
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