The DM133 is a constant current driver specifically designed for LED display applications. The device includes a 16-bit shift register, two latches, and constant current drivers on a single Silicon CMOS chip. Its built-in open/short detection and thermal alarm circuits help the user to detect the overheating of the IC and LED failures. Its user-friendly design allows the user to adjust the output current (5~60mA) by using an external resistor. The current also can be further tuned by 6-bit serial shift-in data.
Features
Constant Current Output: Current with one resistor for 5mA to 60mA
Maximum Clock Frequency: 25MHz (Max.)
Power Supply Voltage: 3.3V to 5.0V
CMOS Compatible Input/Output
Package: HSOP28, SSOP28, QFN32
Constant Current Matching:
10mA ~ 60mA : Bit-to-Bit : ± 4.0% (Max)、
Chip-to-Chip: ± 10.0% (Max)
5mA ~ 10mA : Bit-to-Bit : ± 6.0% (Max)、
Chip-to-Chip: ± 12.0% (Max) Maximum Output Voltage: 17V Thermal Alarm Function: Error signal output when junction temperature exceeds limit LED Open/Short Detection: Error signal output when LED is failed 6 bit Linear Global Current Adjustment