CXSM2225 is a highly integrated electronic cigarette control chip introduced in JTM-IC, which uses ASIC design to completely solve the problem of crash and low-voltage reset in traditional MCU solutions. The chip integrates MOS tube, regulator tube and multiple protection functions, supports 3.2V-4.2V input voltage, static current as low as 5μA, atomization current as high as 1A, and is suitable for healthy electronic cigarette equipment.
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[ CXSM2225 ]"
CXSM2225 Electronic Cigarette Control Chip: Technical Details and Application Guide
Product overview
CXSM2225 is the JTM-IC introduction of a highly integrated electronic cigarette control chip, usingASIC DesignCompletely solve the problem of crash and low-voltage reset in traditional MCU solutions. Chip integrated MOS tube, regulator tube and multiple protection functions, support3.2V-4.2VInput voltage, quiescent current as low5μAAtomization current up1ASuitable for health electronic cigarette equipment. Its core strengths include:
- Triple charging modeTrickle current (<2.7V), constant current (2.7V-4.1V), constant voltage (close to 4.2V), charging error accuracy 1%.
- perfect protection mechanismShort circuit protection (load <1Ω), undervoltage protection (<3.2V), overheat protection (165°C trigger).
- Visual LED indication: Smoking, charging, fault status are dynamically displayed through LED.
Core Features
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energy efficient design
- The quiescent current in power-saving mode is <5μA for extended battery life.
- Built-in 33kHz oscillator to ensure precise timing control.
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Safety protection function
- Short Circuit Protection (SCP): Automatic cut-off output when load resistance <1Ω.
- Overheat Protection (OTP): Forced shutdown when the working temperature exceeds 165°C, and 50°C hysteresis recovery.
- Undervoltage Protection (UVLO): When the battery voltage is <3.2V, enter the protection mode.
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Charging Management
- Support 4.5 V-6V wide voltage input (USB/fire cow adapter).
- Trickle charge protects low voltage battery, constant current stage current up to 120mA.
Typical Application Circuit
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VDD & rarr; Battery anode AT & rarr; External heating wire (multiplex charging port) SW & rarr; Airflow sensor LED & rarr; Status indicator
- Peripheral components: Only 1 LED and 1 capacitor are required, and the system cost is extremely low.
- Encapsulation: SOT23-6(2.9mm × 1.6mm), suitable for compact design.
Design Considerations
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PCB Layout Optimization
- VDD and GND traces need to be short and wide to reduce impedance.
- LED wiring away from the high-frequency switch node, to avoid interference.
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Thermal Management
- Chip & theta;JA & asymp;145°C/W, it is recommended to dissipate heat through copper foil.
Industry Application Scenarios
- Health Electronic Cigarettes: Simulate a real smoking experience with no tar hazards.
- Medical Nebulizer: Stable drive atomizing film, compatible with plant essence extraction.
- Portable Equipment: Low power consumption features suitable for IoT device power supply.
Why choose JTM-IC?
As a professional chip supplier, JTM-IC (official website:jtm-ic.com) provides:
- Full range of RoHS compliant productsLead-free, Halogen-free.
- Technical support and reference designs to accelerate customer product time to market.
