MY9168
16-Channel Constant Current LED Driver With Ghost Image Abatement
General Description
The MY9168 16-channel constant current LED driver with ghost image abatement is suitable for multiplexing display system. The device has wide supply voltage range (3.3V ~ 5.0V) and provides 16 open-drain constant current sinking outputs that are rated to 16V and delivers up to 55mA of high accuracy current to each string of LED. The current at each output is programmable by means of an external current-sensing resistor. The MY9168 features a fast 30MHz DCK input, allowing a wide LED dimming (on/off) range to be implemented. The MY9168 offers a 4-wire serial interface, a 16-bit shift register, and a 16-bit transparent latch. The serial interface allows a micro-controller to configure the output channels using four inputs (DI, DCK, LAT, and ENB) and a data output (DO). DO allows multiple drivers to be cascaded and operated together.
The MY9168’s on-board pass elements minimize the need for external components, while at the same time, providing ±3%(max.) LED current accuracy. Additional features include a ±0.1% regulated output current capability and fast output transient response.
The MY9168 is available in a 24-pin SOP/SSOP/QFN package and specified over the -40°C to +85°C ambient temperature range.
Applications
- Indoor and Outdoor LED Video Displays
- Variable Message Sign (VMS)
- Dot Matrix Module
- Architectural and Decorative Lighting
- Industrial Lighting
- LCD Display Backlighting
Typical Operating Circuits
Features
- 3.3V ~ 5V Operating supply voltage (±10%)
- 3~55mA/5V Constant current output range
- 3~35mA/3.3V Constant current output range
- 16V Rated output channels for long LED strings
- ±3% (max.) LED Current accuracy between channels
- ±3% (max.) LED Current accuracy between chips
- ±0.1% Output current regulation capability
- 30MHz Clock frequency for data transfer
- Fast current transient response
- Ghost image abatement
- Low knee voltage for constant current
- Current setting by one external resister
- Schmitt trigger input
- Power on reset
- Stagger output delay
- High level HBM ESD protection
- -40°C to +85°C Ambient temperature range
Order Information
| PART |
PACKAGE INFORMATION |
| MY9168SA |
SOP24-236mil-1.0mm |
2000 pcs/Reel |
| MY9168SS |
SSOP24-150mil-0.635mm |
2500 pcs/Reel |
| MY9168QF |
QFN24-4mmx4mm |
3000 pcs/Reel |
|
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Pin Configuration
