Highway 09 Ic | Datasheet

The Highway 09 IC datasheet reveals a versatile, rugged linear regulator suitable for a wide range of power supply applications. Its combination of high input voltage tolerance, low dropout, and thermal protection makes it a reliable choice for automotive, industrial, and consumer electronics.

When incorporating the Highway 09 into your next design, pay special attention to input/output capacitor selection, thermal management, and PCB layout. Always refer to the manufacturer-provided datasheet for the exact revision you are using, as minor electrical variations can exist between production batches.

For further reading, look for application notes on "Automotive Power Supply Design Using Linear Regulators" or "Thermal Calculations for LDOs."

Disclaimer: Specifications provided are aggregated from typical datasheets. Actual parameters may vary by manufacturer. Always validate with the official component datasheet before production.

The HIGHWAY09 (and its variant HIGHWAY09A) is a specialized controller integrated circuit primarily used in induction cookers and similar high-power domestic appliances. It typically comes in a DIP-16 or DIP-20 package. Technical Specifications

Function: Master controller / PWM driver for induction cooker power stages. Package Options: DIP-16 (Standard for HIGHWAY09A). DIP-20 (Alternative variant). Key Features: Integrated protection against voltage spikes. High-frequency switching capability for signal integrity. highway 09 ic datasheet

Optimized for harsh, high-temperature environments (up to 105°C in similar power components). Common Applications: Midea and other major induction cooker brands. SMPS (Switch Mode Power Supply) modules. Pin Configuration (General Guide)

While specific pinouts can vary by manufacturer, these ICs typically include:

VCC/GND: Power supply pins (standard operating voltages are often between 5V and 18V for controller logic). PWM Output: Controls the IGBT or power MOSFET switching.

Feedback (FB): Monitors output power or temperature for regulation.

Protection/Error: Interfacing with sensors to shut down during overheating or overvoltage. The Highway 09 IC datasheet reveals a versatile,

💡 Pro Tip: If you are replacing a "Highway 09" chip in a kitchen appliance, check the PCB markings first. These chips are often proprietary or pre-programmed for specific motherboard models like those from Midea.

To help you find the exact wiring diagram, could you tell me: The pin count of your specific chip (16 or 20)? The brand of the appliance you're repairing?

If you need a circuit diagram for a specific section (like the power supply or the induction coil)? 1PCS HIGHWAY09A HIGHWAY09 HIGHWAY08 ... - AliExpress

If the LED string is shorted, the sense resistor sees full current. The IC will attempt to regulate, but the voltage across the pass transistor becomes V_IN (e.g., 14.4V). Power dissipation spikes, triggering OTP within milliseconds. The IC enters a "hiccup" mode (on/off cycling) until the short is removed.

Note: Absolute Maximum Ratings should never be exceeded, even momentarily. 14.4V). Power dissipation spikes

| Parameter | Symbol | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | Input Voltage | V_IN | - | - | 30 | V | | Load Dump Protection | V_IN_surge | - | - | 40 | V | | Output Current | I_OUT | 0 | 1.2 | 1.5 | A | | Current Sense Voltage | V_SENSE | 0.095 | 0.100 | 0.105 | V | | Quiescent Current (no load) | I_Q | 1 | 2 | 5 | mA | | Shutdown Current (VIN<UVLO) | I_SHDN | - | 10 | 50 | µA | | Thermal Shutdown Temp | T_SD | 140 | 150 | 160 | °C | | Thermal Hysteresis | T_HYS | - | 15 | - | °C |

Critical Design Formula: The output current is set by the sense resistor (R_sense) using the internal voltage reference:

[ I_OUT = \fracV_SENSER_SENSE = \frac0.1VR_SENSE ]

Example: To achieve 700mA LED current: ( R_SENSE = 0.1V / 0.7A = 0.142\Omega ) → Use a standard 0.15Ω, 1W resistor.

Unlike standard ICs that carry alphanumeric codes (e.g., LM317, PT4115), the "Highway 09" branding is proprietary to specific manufacturers in the Guangdong and Shenzhen regions of China. It is optimized for cost-sensitive, high-reliability automotive lighting. The "09" likely refers to the 9th revision of the design, indicating maturity.

Given the 40V input rating, you can add a transient voltage suppressor (TVS) like an SMBJ36A at the input to clamp load dump spikes. A series Schottky diode prevents reverse battery.