Pod System E-Cigarettes - Shenzhen RIMYI Technology Co., Ltd.

Pod Solution Board

3-Wire MEMS Mic, Load 0.5~3.0Ω, Negative Pressure -150±50Pa E-Cig Circuit Board

Model: RMY003

Size: 40.2×30.9mm

Low Power: Quiescent Current <20μA

Adjustable Power 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 triggered by an airflow sensor for smoking and with adjustable power. It has dual outputs and is mainly composed of the following circuit modules: MCU control module, dual power output module, OLED display screen, colorful light module, charging management module, and lithium battery control module. It can detect smoking actions and control the output through MCU, and display the output wattage and output status through a digital tube.

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, 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	-0.3~5.0	V
	Charging Voltage (VCC)	VCC	-0.3~6.5	V
	AT Output Current	IAT	8	A
	Output Load	Rload	0.5	Ω

Performance Parameters	Symbol	Parameter	Conditions	Min	Typ	Max	Unit
	P	Operating Air Pressure		-150	-200	-250	Pa
	VDD	working voltage		3.2		4.2	V
	Vuvlo	Low voltage detection threshold	VDD from high to low	2.95	3	3.05	V
	Iq	static current	Power saving mode	–	15	20	uA
	Rdson	Switching tube conduction impedance	IAT=1A	–	18	20	mΩ
	Iled	LED output current		–	–	–	mA
	RS	Short circuit protection threshold		–	0.3	–	Ω
	VAT	Constant average voltage output	VDD=4.2V, Output empty load	–	–	–	V
	Rload	Output load		–	0.5	3	Ω
	Dmin	Minimum conduction duty cycle	VDD=4.2V	–	95	–	%
	TSMOKE	Smoking timeout		–	10	–	S
	VCC	Charging input voltage		4.5	5	6.5	V
	VFLOAD	Floating charging threshold voltage		4.15	4.2	4.25	V
	VTRKL	Drip flow, constant flow	VDD from low to high	2.95	3	3.05	V
	ICH	Charging current	VCC=5V	–	800	–	mA
	ITRIKL	trickle charge current	VCC=5V	–	70	–	mA
	TSD	Overheating protection threshold		–	85	–	℃

LED/Display Status	working condition	Digital tube&LED
	Battery power on self-test	The digital tube light is fully on for 1 second, while the blue light flashes once
	Normal triggering of cigarette lighting	The blue indicator light gradually turns on
	Smoking normally	The blue indicator light is constantly on
	Normal end of cigarette lighting	The blue indicator light gradually goes out
	Smoking timeout	The power symbol of the digital tube flashes twice
	Overcurrent or short circuit protection	The power symbol of the digital tube flashes three times
	Battery undervoltage before smoking	The power symbol of the digital tube flashes 10 times
	Battery undervoltage after cigarette lighting	The power symbol of the digital tube flashes 10 times
	Normal charging	Digital tube battery icon scrolling
	Battery fully charged	After fully charged, the battery icon stops flashing
	Release charging (charger removed)	Turn off the screen and enter low power consumption mode

Product Features	Using MEMS airflow sensors to trigger output;
	Can output different power according to different modes
	In power-saving mode: static current<15 μ A;
	Working voltage: 2.1V~5.0V;
	Supports wide voltage charging (4.5~6.0V);
	Contains protection functions such as overheating (OTP), undervoltage (UVLO), short circuit (SCP), etc;
	Equipped with digital display function,