IC is a very important part for an LED display, they related to the refresh rate, high refresh rate IC can make the LED display more vivid and clear.And now let’s go to see the CHIPONE IC.

Chipone can provide LED display solutions such as constant current drive, line drive, logic control, etc., with high current accuracy and stable performance, which can achieve high-quality display effects. Chipone has a full range of LED display solutions, which can provide users with high-quality constant current drive chips in the small-pitch, rental, fixed-installation, and module application markets. Such as ICND2153, ICN2037

ICND2153, 1~32 sweep PWM constant current output LED display driver chip. ICN2153 is a driver IC specially designed for full-color LED display, with 16 channels of PWM constant current output, 1~32 sweeps at any time. ICN2053 integrates the “Noise Free TM” technology, which has excellent anti-interference characteristics, so that the constant current and low ash effects are not affected by the PCB board. Different external resistors can be used to adjust the current of the output stage to precisely control the brightness of the LED.ICND2153 will buffer the input 16-bit data and convert it into grayscale output, and improve the consistency of low grayscale display by optimizing the PWM output. The LED open circuit detection is integrated inside, which solves the problem of open crosses. The internal self-built blanking circuit can well eliminate ghosts.ICND2153 uses precise current control technology inside, which can make the inter-chip error less than ±2.0% and the inter-channel error less than ±2.0%. The display can effectively solve the problems of low gray blocks, color cast, pitting, and dark first line.

ICND2153 Characteristic:

16-channel PWM constant current source output

1~32 scan any scan

Setting range of output current:

0.5～25mA×16@VDD=5V constant current output

0.5～18mA×16@VDD=4.2V constant current output

0.5～10mA×16@VDD=3.3V constant current output

Between fine current channels: ±1.0% (typical value), ±2.0% (maximum value)

Between chips: ±1.0% (typical value), ±2.0% (maximum)

8-bit current gain adjustment: 12.5%~200%

The minimum inflection point of the constant current source output is 0.3V

Fast output current response (minimum): 20ns@VDD=5V

Data transmission frequency: fMAX=25MHz

Power supply voltage: VDD=3.3～5.5V

Working temperature range: Topr=-40～85℃

Output current formula

Integrated ghost and hidden elimination function

Integrated lamp bead protection circuit to reduce lamp bead damage

Eliminate road crosses

Effectively solve low gray blocks, color cast, pitting, and dark first row

Packaging: SSOP24/QFN24

ICN2037, 16-channel double buffer constant current output LED driver chip. ICN2037 is a driver IC specially designed for LED display, using 16 channels of constant current sink current output. ICN2037 integrates the “Noise Free TM” technology, which has excellent anti-interference characteristics, so that the constant current and low ash effects are not affected by the PCB board. Different external resistors can be used to adjust the current of the output stage to precisely control the brightness of the LED. At the same time, the current precision control technology can make the inter-chip error less than ±2.5% and the inter-channel error less than ±3.0%.The ICN2037 integrates a double buffer register. While displaying the 16bit data in the register, it can continue to store 16bit serial data. Compared with the general constant current source chip, the refresh rate can be increased by more than 50%.

ICN2037 Characteristics:

16 channels of constant current sink current output

Output current range:

3～45mA@VDD=5V

3～30mA@VDD=3.3V

Current accuracy

Between channels: ±1.8 (typical value) ±3.0% (maximum value)

Between chips: ±1.5% (typical value) ±2.5% (maximum)

• Fast output current response (minimum value): 60ns@VDD=5V

I/O Schmitt trigger input

Maximum data transmission frequency: 30MHz

Working voltage of the chip: VDD=3.3～6V

Working temperature range: -40～85℃

It has the function of improving lamp bead damage

With blanking function

It has excellent anti-interference ability and low grayscale effect

Improve the caterpillar phenomenon caused by lamp bead damage

Integrate double buffer, refresh rate is more than 50% higher than general constant current chip

In the work of LED full color display, the function of the driver IC is to receive the display data (from the receiving card or the video processor and other information sources) in accordance with the agreement, and to produce the PWM and current time changes internally, and the output and brightness grayscale refresh Wait for the relevant PWM current to light up the LED. The peripheral IC composed of driver IC, logic IC, and MOS switch work together on the display function of the LED display and determine the display effect it presents.For more information about Flinky LED display, please follow us on Twitter,Linkedin,Facebook,Instagram,Pinterest,Tumblr and so on!