21x22mm MEMS Rechargeable E-cigarette Solution Board KCP2314A

This is an electronic cigarette PCBA solution control board based on MEMS airflow sensor. It consists of two main parts: the charging input interface and the electronic cigarette silicon microphone control module. The electronic components include an airflow sensor, intelligent processing module, control module, actuation module, charging management module, and lithium-ion battery control module. It is used to simulate smoking actions or detection and simulate smoking status through LED lights.

Key features:

Utilizes MEMS airflow sensor for highly stable performance.
The circuit has three operating modes: charging mode, normal operation mode, and power-saving mode.
In power-saving mode, the static current is below 5μA.
Operating voltage range: 1V~5.0V.
Supports charging within a wide voltage range of 5~6.0V.
Built-in protection functions such as over-temperature protection (OTP), under-voltage lockout (UVLO), and short-circuit protection (SCP).
Multiple LED display functions.
Simple peripheral application circuit with low cost.

Categories: Vape PCBA Solutions, Disposable Vape PCBA Solution

Description
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Specifications

Symbol	Parameter	Conditions	Minimum	Typical	Maximum	Unit
P	Operating Pressure	–	-110	–	-200	Pa
Rload	Output Load	–	–	0.8	–	Ω
Vdd	Operating Voltage Range	–	2.1	–	5.0	V
Iq	Quiescent Current	–	–	3	5	uA
RDS(ON)	Discharge Path On-Resistance	VDD=3.7V	–	70	–	mΩ
ILED	LED Current to Ground	2.7V≤VDD≤4.1V	–	4.2	–	mA
ICHARGE	Charging Current	2.7V≤VDD≤4.1V VDD≤2.7V	– –	550 70	– –	mA mA
TSD	Overtemperature Protection Threshold	During Charging During Discharging	75 140	85 150	95 160	℃ ℃

Key Features

MEMS Silicon Microphone Airflow Sensor

It utilizes a unique patented design that allows it to continue functioning normally even after prolonged immersion in e-liquid. It has undergone industry-leading reliability verification with 100,000 switch cycles, maintaining a startup pressure within the range of +/- 15 Pa. It features anti-backflow capability and can detect at least 50 puffs, ensuring exceptional durability and stability.

Charging Management Module:

It integrates an internal charging control circuit that supports multiple charging modes, including trickle charging, constant current charging, and constant voltage charging processes.

Battery Protection Function

When the lithium battery voltage drops below 7V, it employs trickle charging to protect the battery. When the battery voltage reaches 2.7V or above, it switches to high-current charging. Once the battery voltage approaches 4.2V, it enters constant voltage charging mode to prevent overcharging.

Protection Module

It includes built-in undervoltage lockout (UVLO), over-temperature protection (OTP), overcurrent protection for the AT driver port, short circuit protection (SCP), and other features. These effectively prevent issues such as low voltage, excessive temperature, short circuits, and overcurrent, ensuring the safety of the battery and the device.

LED Indicator for Status Display

It utilizes a professional chip design and controls the LED light through a PWM module to simulate the operation status of the e-cigarette. This helps users understand the device’s operation and current status.

Support for Multiple Charging Devices

This includes AC-DC chargers and USB Type-C charging devices, among others.

Hardware Architecture

Key Material Advantages

Product Name	Features
E-cigarette ASIC Chip	Independently developed ASIC with powerful performance and high cost-effectiveness, widely used by major renowned brands
E-cigarette MEMS Sensor	Self-developed anti-logic MEMS with multiple patented technologies, excellent performance, good resistance to oil and corrosion, enhances product performance

Frequently Asked Questions

Where is the e-cigarette chip located?

The e-cigarette chip is typically embedded in the main control board (PCBA, Printed Circuit Board Assembly) of the e-cigarette, which is one of the core components of the device. The main control board is usually located internally within the e-cigarette and is responsible for managing and controlling various functions of the e-cigarette, including battery management, power management, temperature control, airflow sensing, LED light control, and more. The chip is usually soldered onto the main control board and connected to various sensors, batteries, and other components.

How long does an e-cigarette chip last?

The lifespan of an e-cigarette chip depends on various factors, including the quality of the chip, usage patterns, maintenance practices, and manufacturing quality. Generally, e-cigarette chips can operate for several years, but there is no fixed lifespan. Additionally, the way the device is used and maintained can significantly impact the chip’s lifespan, so users should follow the manufacturer’s recommendations and take care of their e-cigarette to prolong its lifespan. If you have any issues or concerns, please consult our professionals.

What should I do if the e-cigarette chip is damaged?

If the e-cigarette chip malfunctions or gets damaged, check if it is within the warranty period. If it is, you can contact us to inquire about repair or replacement options. Sometimes, e-cigarette issues may be related to a damaged or low battery, so try replacing the battery to see if the problem is resolved.