C8135QP

C8135QP is an LED display driver IC featuring a 16-channel constant-current sink architecture. It integrates fast-response technology to effectively enhance display performance at low grayscale levels. Output current is adjustable via an external resistor, with fine-tuning available through the built-in 64-step linear current gain function to meet target brightness and color temperature requirements. The device includes four programmable constant-current inflection points for low-power applications. In addition, C8135QP incorporates a dual-stage data buffer that allows new grayscale data to be written simultaneously during active display output, significantly improving refresh rate and brightness utilization compared to standard constant-current driver ICs. The device is available in a QSOP24 package and operates over a temperature range of -40℃ ~ +85℃.

Applications

• Outdoor or indoor LED displays
• LED displays on mobile phones and other handheld devices
• Keyboard or mouse backlighting
• White goods
• Smart speakers

Key features

• Operating voltage range: 3V ~ 5.5V
• System PWM grayscale control support
• Auto-detection and switching between standard constant current and dual-latch constant current modes
• Built-in column blanking function
• 64-level global current gain
• Four programmable constant current knee voltage options (0.2V / 0.3V / 0.4V / 0.5V)
• Current output range: 0.5 ~ 40mA at VDD=5V; 0.5 ~ 20mA at VDD=3.3V
• Current accuracy: channel-to-channel typical ±1.2%, maximum ±1.5%; chip-to-chip typical ±1.2%, maximum ±1.5%
• SPI-like interface with maximum clock frequency up to 30MHz
• Port voltage clamping technology to prevent "caterpillar" artifacts
• Schmitt trigger input on logic input ports