Disposable E-Cigarettes
3-Wire MEMS Mic, Load 0.6~3.0Ω, Negative Pressure -150±50Pa E-Cig Circuit Board
- Model: RMY002
- Size: 34.5×22.0mm
- Low Power: Quiescent Current <15μA
- Adjustable Voltage Output
- Short Circuit Protection, 10s Over-Inhalation, Over Temperature Protection, Low Voltage Protection
- Digital Tube Display
- Product overview
This is an electronic cigarette circuit board that triggers smoking with an airflow sensor and has adjustable power. It mainly consists of the following circuit modules: MCU control module, power output module, digital display, charging management module, and lithium battery control module. It can detect smoking actions and control output through MCU, and display smoking status through digital display.
Functional Highlights
- MEMS airflow sensor: The microphone airflow sensor detects changes in air pressure and identifies user smoking behavior.
- Signal processing: The airflow changes captured by the sensor will be converted into capacitance change signals, which will be processed by the ASIC chip and transmitted to the MCU control module for output control.
- Protection function: This PCBA solution board has multiple protection functions to ensure user safety during use, including lithium battery protection function, smoking timeout protection, over temperature protection, short circuit protection, and low battery protection.
- Module form: SMT packaging is used to form a module form, which allows it to be directly soldered onto the circuit, making it very suitable for PCBA integration, thereby reducing assembly costs and improving production efficiency.
| Absolute Maximum Ratings | Parameter | Symbol | Value | Unit |
| Supply Voltage (VDD) | VDD | -0.3~6.25 | V | |
| Charging Voltage (VCC) | VCC | -0.3~6.5 | V | |
| AT Output Current | IAT | 9 | A | |
| Output Load | Rload | 0.6 | Ω |
| Performance Parameters | Symbol | Parameter | Conditions | Min | Typ | Max | Unit |
| P | Operating Air Pressure | -100 | -150 | -200 | Pa | ||
| VDD | working voltage | 3.2 | 4.2 | V | |||
| Vuvlo | Low voltage detection threshold | VDD from high to low | 2.9 | 3 | 3.1 | V | |
| Iq | static current | Power saving mode | 5 | 10 | uA | ||
| Rdson | Switching tube conduction impedance | Power saving mode | 15 | 25 | mΩ | ||
| Iled | LED output current | – | – | – | mA | ||
| RS | Short circuit protection threshold | 0.4 | Ω | ||||
| VAT | Constant average voltage output | VDD=4.2V, Output empty load | 3.8 | V | |||
| Rload | Output load | 0.6 | 3 | Ω | |||
| Dmin | Minimum conduction duty cycle | VDD=4.2V | 90 | % | |||
| TSMOKE | Smoking timeout | 10 | S | ||||
| VCC | Charging input voltage | 4.75 | 6.5 | V | |||
| VFLOAD | Floating charging threshold voltage | four point one eight | 4.2 | 4.22 | V | ||
| VTRKL | Drip flow, constant flow | VDD from low to high | 2.95 | 3 | 3.05 | V | |
| ICH | Charging current | VCC=5V | 550 | mA | |||
| ITRIKL | trickle charge current | VCC=5V | 55 | mA | |||
| TSD | Overheating protection threshold | 85 | ℃ |
| LED/Display Status | working condition | Digital tube display |
| Battery power on self-test | The display screen is fully lit for 3 seconds | |
| Normal triggering of cigarette lighting | The screen displays the scrolling effect, fuel and electricity indicators, and the logarithm | |
| Smoking normally | The screen displays the scrolling effect, fuel and electricity indicators, and the logarithm | |
| Normal end of cigarette lighting | – | |
| Smoking timeout | The fuel and electricity indicator flashes 5 times | |
| Overcurrent or short circuit protection | Blink full screen 3 times | |
| Battery undervoltage before smoking | The lightning symbol flashes 10 times | |
| Battery undervoltage after cigarette lighting | The lightning symbol flashes 10 times | |
| Normal charging | The single digit of the battery level, the lightning symbol and percent sign flash, and the outer circle of the battery level lights up with the corresponding color based on the percentage of battery level | |
| Battery fully charged | The fully charged screen displays 100% and the lightning symbol is constantly on | |
| Release charging (charger removed) | Pull out the charger and the screen will light up for 4 seconds |
| Product Features | Use buttons to adjust output, power adjustable |
| The circuit has three working modes: charging mode, normal working mode, and power-saving mode; | |
| In power-saving mode: static current<10 μ A; | |
| Working voltage: 2.1V~5.0V; | |
| Supports wide voltage charging (4.5~6.5V); Equipped with OVP overvoltage protection | |
| Contains protection functions such as overheating (OTP), undervoltage (UVLO), short circuit (SCP), etc; | |
| Multiple digital display functions; |
PCBA Products
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- Sales Manager：RMY-Silvia
- TEL ：+86 18126317732
- Email：sales009@rmychip.com
- WhatsApp ：+86 18126317732
- Company Address: 8th Floor,Building B,FenghuangZhigu,Xixiang Street,Bao'an District,Shenzhen,China
- Factory address: 4th-6th floors,FarEast Industrial Building,No.52 Tiezai Road,Xixiang Street, Bao'an District,Shenzhen,China
