DESCRIPTION
The LD1071 is specifically designed for LED and LED display applications using PWM(Pulse Width Modulation) control with 14 bit color depth. The LD1071 provides a constant output current for driving the LEDs against for the variation of LED forward voltage( Vf ). The constant output current can be preset through an external resistor. Moreover, the preset output current with external resistor can be programmed up to 256 levels for LED global brightness adjustment. The LD1071 consists of 16 bit shift registers, latches, and-gates, constant current driver and 14 bit PWM controller.

FEATURES
• Output current : set-up at 5mA to 45mA with an external
   resistor
   ( when VDD=3.3V, Iout : 5mA ~ 30mA )
• Include error detection circuit
• 16 constant current output channels
• 14 bit gray scale PWM control
• 8 bit programmable output current control
• Constant current accuracy
   - Pin to pin deviation : < ±3% (Max)
   - Chip to chip deviation : < ±6% ( Max)
• 3.3V / 5V CMOS compatible input
• Package : LD1071-SP (SOP-24), LD1071-SS (SSOP-24)
• Maximum CLOCK input frequency : 25MHz
• Maximum PWMCK input frequency : 25MHz