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.
These values help determine compatibility with your MCU (e.g., Arduino, STM32, PIC). highway09a ic datasheet
| Symbol | Parameter | Condition | Min | Typ | Max | Unit | |--------|----------------------|-----------------------|------|-----|------|------| | VIH | Logic Input High (D,DE) | | 2.0 | - | VCC | V | | VIL | Logic Input Low (D,DE) | | 0 | - | 0.8 | V | | VOH | Receiver Output High (R)| Iout = -4mA | 3.5 | 4.5 | - | V | | VOL | Receiver Output Low (R) | Iout = 4mA | - | 0.2 | 0.4 | V | | VOD | Differential Driver Out | RL = 54Ω (RS-485) | 1.5 | 2.5 | 3.0 | V | | IIN | Bus Input Current | Vbus = ±60V (disabled)| - | 10 | 100 | μA | | ICC | Supply Current (active)| No load, DE=1 | - | 1.5 | 3.0 | mA | The Highway09A is a hypothetical/unspecified name for an
For CAN mode: Differential output voltage into 60Ω load is typically 1.5V to 3.0V. Low-Power LED Control
Subject: Highway09A IC Datasheet Analysis Component Type: 3-Channel Constant Current LED Driver (PWM) Primary Application: RGB LED Lighting, Decorative Lighting, Low-Power LED Control
The Highway09A is a hypothetical/unspecified name for an integrated circuit; without an exact manufacturer part number or vendor datasheet snippet, I assume you want a concise datasheet-style report covering typical items buyers or engineers need: device description, pinout, electrical characteristics, functional blocks, typical applications, and example usage. Below is a structured, prescriptive datasheet-style report you can use as a template—replace values with actual numbers from the manufacturer datasheet when available.
Write 0x00 to LED Mode 0 to enable PWM, then set fade-in/out registers (0x20–0x2F). The hardware automates the breath waveform.