AW21024
24-channel RGB LED driver with autonomous pattern generation and low power consumption for smartphone indicators
Product Overview
Description
The AW21024 is a highly integrated 24-channel RGB LED driver featuring autonomous pattern generation and ultra-low power consumption.
This device supports individual LED control with 12-bit PWM dimming and includes on-chip pattern memory for complex lighting effects without host processor intervention.
The low standby current and automatic power-down modes make it ideal for always-on indicator applications in battery-powered devices.
Product Series
AW
Primary Application
Smartphone notification LEDs
Key Features
- 24 independent RGB channels
- 12-bit PWM dimming resolution
- Autonomous pattern generation
- 4KB on-chip pattern memory
- Ultra-low standby current
- I2C control interface
Specifications
| Number of Channels | 24 |
|---|---|
| Output Current | 20mA per channel |
| PWM Resolution | 12-bit |
| Pattern Memory | 4KB |
| Standby Current | <10uA |
| Package | QFN-32 |
Applications
Smartphone notification LEDs
Electronic system design
Gaming device lighting
Electronic system design
Smart home indicators
Electronic system design
Wearable device displays
Electronic system design
Automotive interior lighting
Automotive and EV electronics
FAE Expert Insights
"The AW21024 is perfect for applications requiring complex LED patterns without continuous host processor involvement. The autonomous pattern generation offloads the main processor, saving power and simplifying software. I have used this driver in smartphone designs for notification LED rings with excellent results. The 12-bit PWM provides smooth dimming transitions. The low standby current is critical for battery-powered devices. The pattern memory is sufficient for complex breathing and color-changing effects. For multi-LED indicator applications, this driver offers excellent integration and features."
24-channel RGB driver with autonomous pattern generation for complex LED effects
— David Zhang, BeiLuo
Frequently Asked Questions
What is autonomous pattern generation?
Autonomous pattern generation allows the AW21024 to execute complex LED lighting patterns without continuous host processor control. The device stores patterns in its 4KB on-chip memory and can execute them independently, including breathing effects, color transitions, and blinking patterns. This reduces host processor load and power consumption while enabling smooth, consistent LED effects. The host only needs to trigger pattern playback or switch between patterns.
Use autonomous mode for complex patterns to reduce host processor load.
How many RGB LEDs can AW21024 drive?
The AW21024 can drive up to 8 RGB LEDs (24 channels / 3 channels per RGB LED). Each color channel is independently controlled with 12-bit PWM resolution. This enables smooth color mixing and dimming for each LED.
AW21024 supports up to 8 RGB LEDs with independent channel control.
What is autonomous pattern generation?
Autonomous pattern generation allows the AW21024 to execute complex LED lighting patterns without continuous host processor control. Patterns are stored in 4KB on-chip memory and executed independently, including breathing effects and color transitions.
Use autonomous mode for complex patterns to reduce host processor load.
What is the PWM resolution?
The AW21024 provides 12-bit PWM resolution for each channel. High resolution enables smooth dimming transitions without visible steps. 12-bit resolution provides 4096 brightness levels for precise intensity control.
12-bit PWM provides smooth dimming with 4096 brightness levels.
What is the standby current?
The AW21024 has ultra-low standby current of less than 10uA. Low standby power is critical for battery-powered devices that need always-on indicator lights. The device automatically enters low-power mode when not active.
Low standby current (<10uA) extends battery life for always-on indicators.