TM1665 Constant Current LED Driver IC with Keypad Scanning Interface
Product Overview
The TM1665 is a constant current LED driver IC designed specifically for segment LED displays. It integrates an MCU digital interface, data latching, LED driving, and keypad scanning circuits, offering reliable performance, stability, and strong anti-interference capabilities.
Key Features
- CMOS technology for low power consumption
- Multiple display modes (11 segments × 7 digits to 14 segments × 4 digits)
- Maximum SEG constant current drive voltage: VDD-1V
- Channel-to-channel variation: ±3%
- Chip-to-chip variation: ±6%
- Keypad scanning (10×1)
- Adjustable brightness control with 8 levels of duty cycle
- Serial interface (SCLK, STB, DIN/DOUT)
- Built-in RC oscillation
- Power-on reset circuit
- High anti-interference ability
- Packaging: SOP24
Applications
The TM1665 is primarily used for driving constant current LED displays in segment-based LED products. It is ideal for applications requiring stable and efficient LED display performance.
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