Controller chip is designed by ASIC, which will not cause the current MCU scheme to crash or the chip can not be reset due to the lower critical voltage. The chip works stably with a constant output voltage of 3.5V to ensure the smoke volume during smoking, and has the function of short circuit protection of heating wire, which can protect the load power. Output cut-off when resistance is less than 1ohm; static current is less than 5uA in power-saving mode, and current of atomizer is greater than 2A in smoking mode; at the same time, the chip has visual LED work indication function. According to different application states, it can be distinguished in chip start-up, smoking time, voltage detection, short circuit protection and charging process. LED indication; Charging performance is superior, with perfect battery protection function; Include charging control circuit, support ordinary Buffalo and USB charging equipment. When the charging voltage of lithium batteries is less than 2.7V, trickle current charging can ensure that the battery is not damaged and the battery is safe. When charging to 2.7V or above, high current charging is started, and when the charging voltage is close to 4.2V, the charging current gradually decreases. The error of charging voltage detection can be less than 1%. The peripheral application circuit is simple. IC integrated voltage regulator, easy to process and reduce loss; SOT-23-5 package, small size; few peripheral components, only one LED lamp and one capacitor, low system cost.
Features
ASIC Design
In power saving mode, the static current is small (< 5uA)
Inside Short Circuit Protection Function (SCP)
Embedded Undervoltage Protection Function (UVLO)
Inclusive Overheat Protection Function (OTP)
Function of LED Work Indicator
Wide voltage charging (4.5-6V), excellent charging performance, safe charging process.
High accuracy of charge voltage detection (less than 1%)
Perfect Battery Protection Function.
When the battery voltage is less than 2.7V, trickle current charging is adopted, when the battery voltage is greater than 2.7V and when the battery voltage is less than 4.2V, high current charging is adopted, and constant voltage charging is performed at 4.2V.
The peripheral application circuit of the system is simple and the cost is low.
Note: Exceeding the limit parameters specified in the table above will cause permanent damage to the device. It is not recommended that the device be operated beyond the above limit conditions, otherwise the reliability of the device may be affected.
Function
S085 is a highly integrated and high-performance electronic cigarette controller. Unlike the previous MCU scheme, the controller chip is designed with ASIC, which will not cause a crash, nor will the chip be unable to reset due to the lower critical voltage. The controller IC integrates a MOS tube and a voltage regulator, which is easy to make, low power loss and few peripheral components. It only needs an LED lamp and a capacitor, and the cost of the system is low. The functional modules of the circuit are composed of reference source BG, bias current I_BIAS, oscillator OSC, low voltage detection circuit, digital logic control circuit, LED indicator driver circuit, drive of built-in power tube and charging module.
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