RC5C751

3-Channel RGB Laser Diode Driver for Display System

Description

The RC5C751 is a laser diode driver IC supported three-channel RGB display for driving laser scanning systems. This device features the auto-detection of a threshold current and a light emitting current for each channel of the laser-diode drivers (LD) with connecting photo diodes (PD).

Key Benefits

• Configured 10-bit Sink-type Current DAC with 115 Mdot/s (dot per second) High-speed operation supported for 3-Channel RGB.
• Included light receiving circuits such as the PDI amplifier for ImGAIN and the auto power controller (APC) to set automatically each slope of LD threshold current and light-emitting current.

Key Specifications

• 3-channel RGB Sink-type Current Output
  • LD1 (Red) Maximum Operating Current: I_OP = 80 mA (I_COLOR = 2 mA to 35 mA, I_TH = 5 mA to 45 mA)
  • LD2 (Green) Maximum Operating Current: I_OP = 120 mA (I_COLOR = 2 mA to 60 mA, I_TH = 5 mA to 60 mA)
  • LD3 (Blue) Maximum Operating Current: I_OP = 80 mA (I_COLOR = 2 mA to 35 mA, I_TH = 5 mA to 45 mA)
• Maximum Output Rate / 1-channel: 115 Mdot/s
• High Gradation Output with 10-bit Color DAC
• 1.5 ns (Typ.) High-speed Output Switching at Rising and Falling
• 15-bit Parallel Input Video Interface: Maximum Clock Frequency 115MHz (1.8V LVCMOS Interface)
• 10 V LD Pin Corresponding to High Forward Voltage (V_F)
• Power Saving and Heat Control of Package by LD Power Source Control
• Protections: LD Overcurrent Protection, LD Pin Short-circuit Detection, Abnormal Detection of PDI Input, and Thermal Shutdown
• Pulse-off Function, Dimming Function
• SPI Port Control by SPI Communication (SPI Max. 25MHz)
• Operating Temperature Range: -10°C to 70°C

Typical Applications

Quality & Packages

Applications

• Head-mounted displays
• Pico-projector