产品展示 > LED驱动 > 点晶科技股份有限公司(SITI) > LED单/双/全彩色显示屏 LED护栏灯管 > DM137
DM137
DM137
16-bit Constant Current LED Driver
with Error Detection
General Description
DM137 is a constant-current sink driver specifically designed for LED display applications. The device incorporates shift registers, data latches, and constant current circuitry on the silicon CMOS chip. The maximum output current value of all 16 channels is adjustable by a single external resistor. Its built-in open/short detection and thermal alarm circuits help users detect LED failures and overheating. There are two methods to communicate the error messages to the system. One is through serial output data to indicate which channel has failure. The other is by means of dedicated Alarm pin.
Features
Constant-current outputs: 5mA to 90mA adjustable by one external resistor
Maximum output voltage: 17V
Maximum clock frequency: 25MHz
Built-in LED open/short detection: real-time monitor or smart detection modes
Fast detecting response: 0.1us (min.)
Over temperature protection: Alarm (junction temperature > 110°C)
Shutdown (junction temperature > 180°C)
Power supply voltage: 3.3V to 5.5V