2024-07-17

Introduction to the UCS2904 chip

IC Introduction:

UCS2904 is a four-channel LED constant current driver IC, which can input PWM set data from MCU to UCS2904 to achieve 256-level brightness adjustment, using automatic shaping and forwarding technology, the signal will not be distorted attenuation. The chip is integrated with MCU curing program and single-wire digital interface, data latch, LED constant current driver and other circuits. The VDD pin is integrated with a 5V voltage regulator and few peripheral devices. It is suitable for LED decoration products such as guardrail tube and point light source. This product has excellent performance and reliable quality.

Foot display:

footnote:

Pin name	Pin number	I/O	Function description
DIN	6	I	Data entry
DO	5	O	Data output
VDD	7	--	Power supply positive
OUTR	1	O	N Tube open leakage, constant current output
OUTG	2	O	N Tube open leakage, constant current output
OUTB	3	O	N Tube open leakage, constant current output
OUTW	8	O	N Tube open leakage, constant current output
GND	4	--	electrically

Electrical characteristic:

Test at VDD=3.0 ~ 5.5V and operating temperature 40 ~ +85℃ unless otherwise stated			UCS2904			unit
Parameter name	Parameter symbol	Test condition	Minimum value	Typical value	Maximum value	unit
High level output voltage	Voh	Ioh=3mA	VDD-0.5			V
Low output voltage	Vol	Iol=10mA			0.4	V
High level input voltage	Vih	VDD=5.0V	3.5		VDD	V
Low-level input voltage	Vil	VDD=5.0V	0		1.5	V
High level output current	Ioh	VDD=5.0V，Vdo=4.9V		1		mA
Low level output current	Iol	VDD=5.0V，Vdo=0.4V		10		mA
Input current	Iin	DIN connects to VDD		1		μA
Static current	IDD	VDD=4.0V, GND=0V, other ports are suspended	0.5	2.8	3.5	mA
OUT Outputs a constant current	Iout	OUTR,OUTG,OUTB,OUTW=ON ，Vout=3.0V		18		mA
OUT Output leakage current	Iolkg	OUTR,OUTG,OUTB,OUTW =OFF，Vout=12.0V			0.5	μA
Constant current error between channels	ΔIolc0	OUTR,OUTG,OUTB,OUTW =ON，Vout=3.0V			±3	%
Constant current error between chips	ΔIolc1	OUTR,OUTG,OUTB,OUTW =ON，Vout=3.0V			±5	%
Power consumption	Pd	Ta=25℃			250	mW

Use occasion:

1, the use of SMD5050rgbw LED as a light source, with high color rendering index, light decay is small, light color pure, no ghost and other characteristics;
2, green and pollution-free, no lead, mercury and other polluting elements, no pollution to the environment;
3, good color rendering, the presentation of the real color is more real, a variety of light colors are optional, can meet the needs of different environments, eliminate the traditional lamp color temperature is high or low caused by depression, make the visual feel comfortable, improve people's work efficiency;
4, the decorative effect is good, the use of special surface treatment technology, novel appearance, simple installation, easy disassembly, wide range of application, such as:

Indoor lighting: shops and other indoor commercial atmosphere lighting, car decoration, stair corridor home decoration lighting.
Atmosphere lighting: bars, KTV, cafes light entertainment venues
Outdoor lighting: building exterior wall, architectural decoration, underwater lighting project
Advertising lighting: advertising font backlight, light box, luminous characters, luminous signs

If you're not sure which IC is best for your project or need help with layout configuration, please call us at LIKELIGHT:+86-755-23328395, email :contact@like-light.com.
We can provide you with complete design and manufacturing services to meet your specific needs and requirements.