09 Ic Datasheet — Highway
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: Stable 5V DC output, pushing up to 1A max load. Quiescent Current ( IQcap I sub cap Q ) : Extremely low 10 A, optimizing standby modes.
The HIGHWAY09A is an application-specific microcontroller produced by Guangdong Highway Electronic Technology. It comes in a , making it particularly convenient for prototyping and repairs, as it can be easily handled and replaced on through-hole printed circuit boards.. Information indicates that Holtek Semiconductor may be the original manufacturer of the MCU core, with the design then customized by Highway. highway 09 ic datasheet
| Pin No. | Pin Name | Description | | --- | --- | --- | | 1 | VCC | Positive power supply | | 2 | GND | Ground | | 3 | SCK | Serial clock input | | 4 | SER | Serial data input | | 5 | RCK | Register clock input | | 6 | OE | Output enable input | | 7-14 | QA-QH | Parallel output pins | | 15 | SRCLR | Synchronous reset input | | 16 | Q' | Not used (NC) |
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The (frequently designated as HIGHWAY09A or HIGHWAY09 ) is a specialized, multi-functional integrated circuit designed primarily for signal chain monitoring, power management, and resonance control in domestic appliances and industrial electronics. Manufactured by industry leaders like Holtek , it serves as the architectural backbone for power stage drivers in modern induction cookers (such as Midea) , multi-phase sensor arrays, and automotive sub-systems. This comprehensive technical article acts as an expanded reference datasheet, highlighting key electrical parameters, physical architectures, and design principles. 1. Product Overview and Key Features
| Pin No. | Name | Function | Description | | :--- | :--- | :--- | :--- | | 1 | | Supply Voltage | Input power pin. Bypass with a 100µF electrolytic + 0.1µF ceramic capacitor close to the IC. | | 2 | GND | Ground | Common ground for input, output, and control circuitry. The tab (heatsink) is internally connected to GND. | | 3 | OUT | Current Output | Connected to the cathode of the LED string. An external sense resistor (R_sense) is placed between OUT and GND to set the current. | | Pin No
Operating near maximum ratings reduces lifetime. Provide adequate heatsinking if I_OUT > 500mA.
Connect VIN to +12V battery, GND to system ground, VOUT to load. Enable pin (if present) tied to VIN or pulled high via 10kΩ resistor.
If a direct Highway09A replacement is unavailable, engineers often look to chips with similar signal processing or control capabilities: