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The TU8FA0109AA is a controller chip and it includes 16ch constant current driving circuit. So this chip is suitable for LED Video display, LED Sign Board and LED Decorative Lighting application.
Customer can set constant current level, which is applicable LED intensity for their application, within 5mA~60mA by connecting external resistor to the REF pin. Also this chip includes 256 step brightness controller and it can use 256 level global dimming control or Gray Scale control.
Besides this LED controller chips adopt our own network controller technology, ELINTM, This network controller is very powerful and effective method for forming LED driver serial network chain and it can handle maximum 35Mbps data transfer rate. In addition, this network controller includes various network command set and register sets which are very helpful for composing serial network chain effectively and easily.
Basically two signal lines (SCLKI, SDATI) are enough to make network chain and data transfer. So it's very helpful and cost saving way to make LED module and network chain. And then, we also adopt latch enable pin(LATCH). Customer can enable or disable this latch enable by network command and if customer enabling this pin, then uploading time of PWM data will be synchronized with signal which is enforced by latch enable pin. This method is very good way to remove incident image as like LED Video display application.
The thermal detector trigger system reset if the chip junction temperature over around 150℃ and release system reset if operating temperature falls below around 90℃ to prevent thermal damage to the LED driver chip. Also the customer can enable or disable thermal detection function by network command set.
With LED open detection, TU8FA0109AA can detect LED open status by respectively without extra component. If LED open detection network command is applied to SDATI pin, then this command are propagate to each LED driver IC and check the LED open status individually. After individual chip finishes to check LED open status, it transfer LED open status through network chain (feed back loop). So customer can verify which ID and which channel of LED are open.
7.3Mhz Internal RC Oscillator
Maximum Synchronous Clock : 35Mhz
Power On Reset and Low Voltage Detector
Internal Thermal Detector and Shutdown
| - Shutdown > 150℃ , Release < 90℃ |
60mA Constant Current Driver ( REF = 20KΩ)
| - Current Fine Tuning can be executed by external resistors.(REF pin) |
Constant Current Accuracy
| - Between Channels : 1.5%(typ), 3%(max) | |
| - Between Chips : 6%(max) |
Support Up to 27V LED Power
LED Open Detection to detect LED errors for each channel
256 Level Global Brightness Control ( Analog Dimming control)
Communication Line Observer Reset (Watch Dog Function)
Max 35 Mbps Enhanced Local Interconnect Network(ELINTM)
| - Software selectable data band width(8bit or 12bit) | |
| - Need 4 wires (VDD, VSS, SCLIK, SDATI) to form network | |
| - Support Total 65536 devices for one serial network |
12Bit X 16 Advanced Pulse Width Modulator (APWMTM) to improve refresh rate and
| reducing Flicker noise. |
Staggered LED output to reduce EMI noise and power fluctuation during data change
Built buffer for data to next driver
24SSOP
LED Decorative Lighting
Outdoor/Indoor LED Video
Message Display
Media Facade
