9-channel LED (light-emitting diode) drive control dedicated circuit

安鑫的羊

9-channel LED (light-emitting diode) drive control dedicated circuit [Copy link]

TM1809 is a 9-channel LED (light-emitting diode) drive control circuit, which integrates MCU digital interface, data latch, LED high-voltage drive and other circuits. Through the peripheral MCU control, the chip's individual brightness is realized, and the cascade control realizes the color dot matrix light control of the outdoor large screen. This product has excellent performance and reliable quality.

Features

Using high voltage power CMOS process

Output port withstand voltage 24V

VDD internally integrates 5V voltage regulator

Chip VDD is connected to an external series resistor, and the voltage supports 6~24V input

Brightness adjustment circuit, 256 levels of brightness adjustable, equivalent to 1024 levels at low brightness

Single-wire serial cascade interface

Oscillation mode: Built-in RC oscillation and clock synchronization according to the signal on the data line. After receiving the data of this unit, it can automatically shape the subsequent data and send it to the next level through the data output terminal. The signal will not be distorted or attenuated as the cascade becomes farther.

Built-in power-on reset circuit

The PWM control terminal can achieve 256 levels of adjustment, and the scanning frequency is not less than 400Hz

Able to complete data reception and decoding through one signal line

When the refresh rate is 30 frames/s, the number of cascade points in low-speed mode shall not be less than 540 points, and in high-speed mode shall not be less than 1080 points

Data transmission speed can be 400Kbps or 800Kbps

Package type: SOP14, DIP14

Applicable fields: point light sources, guardrail tubes, soft light strips, indoor and outdoor large screens, etc.

Original technical support and services, including provision of information and sample testing.

se7ens

Kind of interesting

It feels more powerful than WS2812