May 05, 2025
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As demand for LED digital displays continues to rise, the AS1108WL stands out with its high integration, flexible control, and reliable performance. It's widely used in industrial control, consumer electronics, and more.
Facing a growing demand for reliable LED display drivers, the AS1108WL offers a compact, high-performance solution ideal for digital display systems.
With its robust SPI interface, industrial-grade temperature tolerance, and adjustable brightness control, it meets the stringent requirements of modern electronic designs. Read on for full specifications, application examples, and selection insights.
Parameter | Value | Description |
Supply Voltage | 2.7V to 5.5V | Supports common logic systems |
Operating Temperature | -40°C to +125°C | Suitable for harsh industrial environments |
Display Channels | 8-bit | Drives 8-digit 7-segment or 64 LEDs |
Interface | SPI | High-speed, MCU-friendly communication |
Current Regulation | External resistor adjustable | Consistent LED brightness across channels |
Brightness Control | 16-level internal PWM | Adaptable to diverse lighting needs |
When choosing an LED driver like AS1108WL, consider the following:
● Power Compatibility: Works well with both 3.3V and 5V systems.
● Control Interface: SPI allows daisy-chaining multiple chips for larger displays.
● Display Requirement: Supports 8-digit 7-segment or 64 discrete LEDs.
● Power Efficiency: Combines PWM dimming and constant current for optimal power use.
● Form Factor: WL lead-free package supports SMT assembly and eco-compliance.
AS1108WL is widely used in digital multimeters, thermostats, and digital pressure gauges—offering robust performance in temperature extremes.
Appliances, electronic clocks, and portable medical devices benefit from the uniform brightness and compact footprint of AS1108WL.
Perfect for control panels and status displays in alarm and access systems, ensuring clear and responsive output.
With rising trends in IoT, smart homes, and industrial automation, LED driver ICs are increasingly in demand. According to MarketsandMarkets, the global LED driver market is expected to reach USD 9.1 billion by 2025.
Key drivers include:
● Increasing embedded display interfaces
● Miniaturization of display modules
● Greater demand for remote visual control
AS1108WL fits well into this growing niche of mid-to-low power, high-efficiency display drivers.
Model | Channels | Interface | Current Control | Max Output/Channel | Key Features |
AS1108WL | 8 | SPI | Constant + PWM | 40mA | Fine-grain brightness control |
8 | SPI | Constant | 30mA | Popular, less precise brightness | |
TM1637 | 6–8 | Custom | Open-drain | No constant current | Budget-friendly, basic control |
✅ Why choose AS1108WL:
● Wider industrial temperature support
● Better brightness uniformity with PWM
● Reliable brand and long-term supply chain support
Q1: Can multiple AS1108WL chips be cascaded?
Yes, the SPI interface supports daisy-chaining to expand display capacity.
Q2: What’s the maximum current per LED channel?
Up to 40mA per channel, depending on external resistor settings.
Q3: Does AS1108WL support dynamic display effects?
Yes, effects like scrolling and flashing can be controlled via SPI commands from an MCU.
Q4: Are there alternative packages or low-power versions?
Yes, other AS1108 variants exist with different packaging (e.g., SOIC), though WL is best for compact SMT.
Q5: Is it RoHS compliant?
Yes, AS1108WL uses a lead-free, RoHS-compliant package.
Looking forward, display driver ICs will evolve toward:
● Smaller footprints
● Lower power
● Higher channel density
● Seamless integration with modern MCUs/SoCs
The AS1108WL, with its mature, proven feature set and flexible control, remains a strong choice for embedded and display-centric designs.
Whether you're a procurement specialist or an electronics engineer, the AS1108WL is a reliable and adaptable LED display driver that balances performance, integration, and efficiency.
