{"product_id":"aw9523b-16-channel-led-driver-i2c-gpio-expander-c148077-qfn-24","title":"AW9523B 16-Channel LED Driver \u0026 I2C GPIO Expander (C148077, QFN-24)","description":"\u003cp\u003eExpand your microcontroller's capabilities and create stunning lighting effects with the \u003cb\u003eAW9523B\u003c\/b\u003e multi-function IC. This highly versatile chip operates as both a 16-channel constant-current LED driver and a general-purpose input\/output (GPIO) expander. By utilizing the standard I2C bus interface, it allows you to control up to 16 independent LEDs or read\/write to 16 digital pins while occupying only two precious pins on your main MCU (like an STM32, ESP32, or Arduino).\u003c\/p\u003e\n\u003cp\u003eWhen configured in LED mode, each of the 16 channels features an independent 256-step linear dimming control, allowing for ultra-smooth breathing effects, color mixing, and custom drone navigation light patterns. If used as an I\/O expander, it is perfect for reading multiple switches or driving relays. Housed in a compact QFN-24 package, the AW9523B is an excellent choice for custom FPV drone lighting boards, custom mechanical keyboards, and complex DIY electronics where space and MCU pins are at a premium.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Features:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDual Functionality:\u003c\/b\u003e Each of the 16 channels can be independently configured as an LED drive pin or a standard GPIO pin.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eI2C Interface:\u003c\/b\u003e Controls 16 channels using only two wires (SDA\/SCL), drastically saving I\/O pins on your primary microcontroller.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e256-Step Dimming:\u003c\/b\u003e Features built-in 8-bit linear dimming control for each LED channel, allowing for smooth, flicker-free brightness adjustments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eInterrupt Support:\u003c\/b\u003e Includes an interrupt output (INT) to notify the master MCU of input state changes without constant polling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePart Number:\u003c\/b\u003e AW9523B (LCSC: C148077)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eIC Type:\u003c\/b\u003e LED Driver \/ I\/O Expander\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eInterface:\u003c\/b\u003e I2C (Up to 400 kHz)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eNumber of Channels:\u003c\/b\u003e 16\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDimming Control:\u003c\/b\u003e 256 steps (8-bit) per channel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePackage Type:\u003c\/b\u003e QFN-24 (SMD\/SMT)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RC-LIFE","offers":[{"title":"Default Title","offer_id":54258395382098,"sku":null,"price":24.0,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1065\/8067\/2850\/files\/Modul-z-16-kanalowym-ekspanderem-GPIO--AW9523B_1.jpg?v=1786695609","url":"https:\/\/rc-life.com\/pl\/products\/aw9523b-16-channel-led-driver-i2c-gpio-expander-c148077-qfn-24","provider":"rc-life","version":"1.0","type":"link"}