The TM1628A is an LED driver IC in a SOIC-28 package, designed for controlling 7-segment LED displays and key scanning. It is manufactured by Titan Micro Electronics and is commonly used in applications like induction cookers, microwave ovens, and other small household appliances with LED displays. Below is a concise overview based on available information:

Key Features:-

• Functionality: LED controller with a 1/7 to 1/8 duty factor, supporting 7-segment displays.
• Display Support:
  • Multiple display modes (e.g., 12 segments × 6 grids to 11 segments × 7 grids).
  • Integrated display memory and control circuit.
• Key Scanning: Supports an 8×2 key matrix for input scanning.
• Interface: Uses a 3-line serial interface (CLK, DIO, STB) for communication with a microcontroller.
• Dimming: 8-step dimming circuitry for brightness control.
• Technology: CMOS, offering low power consumption.
• Package: 28-pin SOIC (Small Outline Integrated Circuit), optimized for easy PCB layout and cost efficiency.
• Supply Voltage: Typically operates at 5–7V, suitable for industrial control systems.

Applications:-

• LED display drivers for household appliances (e.g., induction cookers, microwaves).
• Digital tube or LED display devices in electronic products.

Pin Configuration:-

• 28-pin SOIC package with assignments optimized for PCB layout.
• Includes 11 segment output lines, 6 grid output lines, and 1 segment/grid output line.