DM621 Datasheet PDF

SiTi DM621

The DM621 is an innovative LED driver that integrates a new data transmit interface to accomplish 2-wires control for lighting applications. By the combination of SIN and DCK, DM621 could be pre-programmed to set the operating modes that involve GCK frequency division, PWM grayscale selection, inverse IOUT PWM signal, and GCK frequency selection. The IOUT waveform is averagely divided into 16 sections in order to reduce the flickers and enhance the visual refresh rate.

Part No.	DM621
Datasheet	DM621 Download
Manufacturer	SiTi
Description	12-CHANNELS PRE-PROGRAMMABLE CONSTANT CURRENT LED DRIVER
Buy	Stock & Price

GENERAL DESCRIPTION

DM621 also provides the auto-latch function and incorporates a particular PWM method (AS-PWM). The DM621 could also be constructed as a PWM controller for LED drivers. In this case, resistors must be connected at output pins to achieve this function (Fig.18). This chip incorporates 4x3-channel constant current circuitry with current value set by 3 external resistors and 256/1024/4096/16384 gray scale PWM function unit. Each channel provides a maximum current of 90mA. The maximum output sustaining voltage of 28V would make more serial LEDs possible. And DM621 also integrates an internal regulator to make power supply voltage up to 12V. Meanwhile, retiming of DCKO and SOUT is advantageous in the LED decorating and long-cascade applications.

FEATURES

z 4 x 3(R/G/B) Output Channels z 8/10/12/14-bits PWM grayscale Control z Maximum Clock Frequency: 20MHz z Constant Current Output: 5mA to 90mA z Maximum Output Sustaining voltage: 28V z Power Supply Voltage: 5V to 12V z Av...