Highway09a Ic Datasheet -

[ V_OUT = \fracR3R1 \times (V_SHUNT+ - V_SHUNT-) ]

| Revision | Date | Description of Change | |----------|------------|-------------------------------| | 1.0 | 2024-05-10 | Initial release | | 1.1 | 2025-01-20 | Added DFN-8 package, EMIRR data |

Disclaimer: This document is for informational purposes only. Highway Semiconductor assumes no liability for application assistance or customer product design. Customers are responsible for their products and applications.

Highway Semiconductor
123 Silicon Drive, San Jose, CA 95112
www.highwaysemi.com

Datasheet — Highway09A — Rev 1.1 — January 2025

The IC utilizes a proprietary Single-Wire Return-to-Zero (RZ) communication protocol.

The Highway09a IC (AW9523B) is a versatile, low-cost solution for expanding I/O and driving LEDs with professional-grade dimming. It bridges the gap between simple GPIO expanders and complex LED controllers, making it ideal for DIY electronics, keyboard backlighting, status panels, and industrial HMI devices.

When to use: Need 10+ I/Os, constant current LED drive, or breath effects over I²C.
When to avoid: Requiring high-speed GPIO toggling (>10 kHz) or analog inputs.

Note: Always refer to the exact AW9523B datasheet from Ai-Thinker or Willsemi for electrical characteristics and timing diagrams, as clone variants may have minor differences.

HIGHWAY09A is a versatile 16-pin integrated circuit (IC) primarily utilized as a low-dropout voltage regulator multi-channel signal processor . Frequently manufactured by highway09a ic datasheet

or sourced through specialized distributors, it is commonly found in a PDIP16 (Plastic Dual In-line Package)

format, making it ideal for prototyping and industrial applications. Technical Specifications

Based on the available datasheet information, the HIGHWAY09A offers a robust set of electrical characteristics: Input Voltage Range: Wide operating range from 4.5V to 40V Regulated Output: Typically provides a steady Max Output Current: Capable of delivering up to Quiescent Current: Extremely low power consumption at only Built-in Protection:

Includes safeguards against over-current, over-temperature, and reverse-battery conditions. Pin Configuration (DIP-16)

The IC's 16-pin layout allows for managing multiple data lines simultaneously, which simplifies circuit design by reducing external component needs. VCC & GND: Primary power supply and ground references. IN1–IN4 / OUT1–OUT4: Four channels for signal input and processed output. CTRL & EN:

Control and Enable pins for managing operational modes and power states. Specialty Pins: Some variants include pins for current sensing , soft start functionality, and overvoltage protection. Key Applications

The HIGHWAY09A is highly adaptable, appearing in both industrial and specialized consumer sectors: Automotive Electronics:

Power supplies for Engine Control Units (ECUs), instrument clusters, and sensor interfacing. Industrial Automation:

Precise control for conveyor belt systems and motor synchronization. Consumer Appliances: Widely used in induction cookers [ V_OUT = \fracR3R1 \times (V_SHUNT+ - V_SHUNT-)

to translate user input into gate signals for high-frequency switching. Advanced Tech:

Some documentation suggests its use in autonomous vehicle navigation for real-time sensor fusion and predictive path planning. AliExpress Reviewer Verdict Engineers often prefer the HIGHWAY09A for its high stability signal integrity under varying load conditions. The DIP-16 package

is particularly praised for its heat dissipation and ease of soldering compared to surface-mount alternatives during the development phase. AliExpress or more details on its induction cooker wiring 5PCS HIGHWAY09A HIGHWAY09 DIP-16 NEW - AliExpress

HIGHWAY09A is an integrated circuit (IC) primarily used as a core controller in induction cooker

. It is known for its reliability and precision in managing high-power induction heating environments. AliExpress Core Function & Applications Primary Role

: Serves as the main control unit for multi-stage induction cookers. Precision Control

: Manages different heating zones and maintains signal integrity under varying load conditions. Reliability

: Favored for industrial control systems and consumer-grade audio equipment due to its robust protection features. Compatibility

: Part of a family of ICs (including Highway08, Highway13, and Highway15-16C) often found in repair kits and new product designs. AliExpress Key Technical Specifications soft start functionality

While the full internal schematic is typically restricted to the official manufacturer datasheet, the following characteristics are standard for this component type: Package Type : Typically available in a

(Dual In-line Package) format, suitable for through-hole mounting on PCBs. Operating Conditions

: Designed to operate within standard industrial temperature ranges (often -20°C to +85°C) to ensure safety during high-heat induction cycles. Protection Systems

: Includes built-in safeguards to prevent damage from electrical faults, which is critical for high-voltage appliance safety. AliExpress Importance of the Datasheet Accessing the specific HIGHWAY09A Datasheet is essential for: Pin Configuration

: Identifying the exact pinout for power supply, sensor inputs, and PWM (Pulse Width Modulation) outputs. Voltage Requirements

: Adhering to precise pin voltage levels to avoid component failure. Leakage Current

: Verifying subtle electrical characteristics that distinguish genuine chips from low-quality alternatives. AliExpress Sourcing & Documentation Manufacturers : Often associated with brands like or specific specialized induction control manufacturers. Availability

: You can find listings and documentation through electronic distributors like Jotrin Electronics or marketplaces like AliExpress for repair parts. Jotrin Electronics

If you are looking to integrate this into a specific circuit, I can help you find: exact pinout diagram sample circuit diagram for an induction cooker application Alternative ICs if the HIGHWAY09A is currently out of stock 1PCS HIGHWAY09A HIGHWAY09 HIGHWAY08 ... - AliExpress

Use the 16 pins to drive a 4×4 LED matrix or 8 buttons + 8 LEDs. The constant current sink eliminates external resistors for LEDs.

The Highway09A contains three independent output channels, each capable of driving an LED with a constant current. The current magnitude is typically set internally (e.g., 18.5mA per channel), eliminating the need for external resistors to set the current limit.