16-Bit Constant Current LED Sink Driver With Silent Error Detection

Product Description
HW5037 is an enhanced 16-bit constant current LED sink driver with On-line error detection and output current gain control.HW5037 contains a 16-bit Shift Register and a 16-bit Output Latch, which convert serial input data into parallel output format. At HW5037 output stages, sixteen regulated current ports are designed to provide uniform and constant current sinks with small skew between ports for driving LED’s within a wide range of forward voltage (Vf) variations. Users may adjust the output current from 5 mA to 80 mA with an external resistor Rext, which gives users flexibility in controlling the light intensity of LED’s. HW5037 guarantees to endure maximum 17V at the output ports. Besides, the high clock frequency up to 35 MHz also satisfies the system requirements of high volume data transmission.

Features
􀁺 Backward compatible with MBI5026 in package
􀁺 16 constant-current output channels
   Constant output current range: 5 -80 mA
􀁺 3.3 / 5 V supply voltage
􀁺 Intelligent LED error detection
   On-line error detection: Data-in, Error-out
   Compulsory silent error detection < 0.1mA
   Open/Short-Circuit Detection to detect individual LED errors
   Driver output leakage diagnosis for LED always-on
   Pre-settable short-circuit detection voltage
􀁺 Over temperature warning
􀁺 Power saving with sleep mode
􀁺 Low operation current < 3mA
􀁺 Excellent output current accuracy,
   between channels: <±1.5% (typ.), and
   between ICs: <±3% (typ.)
􀁺 Fast response of uniform output current,
   OE (min.): 80 ns
􀁺 Staggered output delay
􀁺 30MHz clock frequency
􀁺 Schmitt trigger input