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TM1668 Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
TM1668TM4400Yes

TM1668 is an LED driver control IC with keyboard scanning functionality, manufactured by TM (Titan Micro Electronics).

The TM1668 is an LED driver control IC with keyboard scanning functionality, manufactured by TM (Titan Micro Electronics).

Specifications:

  • Supply Voltage: 3.0V – 5.5V
  • Maximum Segment Output Current: 20mA
  • Maximum Grid Output Current: 100mA
  • Communication Interface: Serial (SPI-like)
  • Display Modes: 8-segment × 16-digit, 7-segment × 14-digit, or mixed LED and key-scan modes
  • Key Scanning: Supports 8×3 matrix key scanning
  • Dimming Control: 8-level adjustable brightness
  • Operating Temperature: -40°C to +85°C
  • Package Options: SOP28, DIP28

Descriptions:

The TM1668 is designed for driving LED displays and scanning matrix keyboards. It integrates a segment driver, grid driver, and key scanning circuit, reducing external components. It supports serial data input and can control multiple LEDs with adjustable brightness.

Features:

  • Built-in RC oscillator (no external crystal required)
  • Serial data input/output for cascading multiple ICs
  • 8-level PWM brightness control
  • Low power consumption
  • Supports mixed LED display and key scanning modes
  • High noise immunity

This IC is commonly used in industrial control panels, home appliances, and consumer electronics for display and key input functions.

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