Chuangxin Micro CMT1015DEV is a lithium battery protection chip suitable for mobile power banks, power tools, and mobile phone fast charging adapters. The chip supports 18V withstand voltage, covering the requirements of 2 series of lithium batteries (8.4V) and 12V system. The product has low internal resistance and strong energy efficiency, with RDS (on) as low as 8m Ω (VGS=10V), which can significantly reduce conduction loss, heat generation, and improve charging and discharging efficiency, especially suitable for high current usage scenarios. Integrating 2-channel NMOS on a single chip can save 50% of PCB area, while reducing peripheral components such as resistors and capacitors, effectively reducing BOM costs; Adopting DFN3 × 3-8L ultra-thin patch packaging, it has excellent heat dissipation performance and high integration characteristics, which can simplify PCB layout and overall thermal design.

1、 Core parameters

The CMT1015DEV from Chuangxin Micro adopts a dual N-MOS structure, which includes two independent N-channel MOSFETs built-in, providing a flexible control method for the circuit. Its withstand voltage BVDSS is as high as 18V, which can adapt to 2 series lithium batteries (2S, maximum voltage 8.4V) and 12V systems, with sufficient safety margin, and can operate stably under various working conditions, avoiding damage to the circuit due to high voltage.

In terms of current processing capability, the chip performs well. The maximum current ID of a single tube can reach 15A, which can meet the requirements of high current charging and discharging. Its on resistance is relatively low, not exceeding 8m Ω when VGS=10V and 10m Ω when VGS=4.5V. A lower on resistance means that less heat is generated when current passes through, which helps improve circuit efficiency and reduce energy loss. This is valuable for equipment that requires long-term operation or high energy efficiency requirements.

The gate voltage range VGS is ± 20V, and the wide range of gate voltages enables the chip to be compatible with various driving circuits, providing flexibility for design. The packaging adopts DFN3 × 3-8L (surface mount) form, which is compact in size and conducive to saving PCB space. At the same time, it has good heat dissipation performance and can timely dissipate the heat generated by the chip, ensuring stable operation of the chip. The surface of the chip is silk screened with 1015DEV for easy identification and differentiation.

二、产品特色

1、低内阻特点

    CMT1015DEV的低导通电阻是其一个主要特点。在大电流充放电过程中，低内阻有助于减少能量损耗，降低芯片发热量。这不仅有利于提高设备整体效率，延长电池使用时间，还能减少因过热引发的性能下降和安全隐患，帮助设备长时间稳定可靠运行。

2、双管集成节省空间

    单芯片集成2路NMOS的设计是该芯片的又一特色。这种集成方式有效节省了PCB面积，让电路设计更加紧凑。同时简化了外围电路，减少了元件数量和焊接点，降低了电路的复杂度和故障率，有利于提升生产效率和产品可靠性。

3、高性价比方案

    创芯微作为LVMOS系列的量产成熟厂商，在成本控制方面具有优势。CMT1015DEV以良好的性能和合理的价格，为用户提供了高性价比的解决方案。无论是对大规模商业生产，还是追求性能与成本平衡的DIY爱好者，都是一个合适的选择。

2、 Product Features

1. Low internal resistance characteristics

The low on resistance of CMT1015DEV is one of its main characteristics. During high current charging and discharging processes, low internal resistance helps to reduce energy loss and decrease chip heat generation. This is not only beneficial for improving the overall efficiency of the equipment and extending battery life, but also reduces performance degradation and safety hazards caused by overheating, helping the equipment to operate stably and reliably for a long time.

2. Dual tube integration saves space

The design of integrating 2-channel NMOS on a single chip is another feature of this chip. This integration method effectively saves PCB area and makes circuit design more compact. At the same time, it simplifies the peripheral circuit, reduces the number of components and solder joints, lowers the complexity and failure rate of the circuit, which is beneficial for improving production efficiency and product reliability.

3. High cost-effective solution

As a mature manufacturer of LVMOS series in mass production, Chuangxin Microelectronics has advantages in cost control. CMT1015DEV provides users with a cost-effective solution with excellent performance and reasonable price. It is a suitable choice for both large-scale commercial production and DIY enthusiasts who pursue a balance between performance and cost.

With excellent core parameters, practical features, and diverse application scenarios, Chuangxin Micro CMT1015DEV has become a competitive product in the field of 2-string lithium battery protection. Taking into account performance, cost, and reliability, this chip provides users with a reliable choice and is expected to play a more important role in the future electronic market.