LP5891 48 Current Sources, 64 Scans, Common Cathode LED Matrix Driver

1 Features

Separated V_CC and V_R/G/B power supply
- V_CC voltage range: 2.5 V–5.5 V
- V_R/G/B voltage range: 2.5 V–5.5 V
48 current source channels from 0.2 mA to 20 mA
- Channel-to-channel accuracy: ±0.5% (typ.), ±2% (max.); device-to-device accuracy: ±0.5% (typ.), ±2% (max.)
- Low knee voltage: 0.26 V (max.) when I_OUT = 5 mA
- 3-bits (8 steps) global brightness control
- 8-bits (256 steps) color brightness control
- Maximum 16-bits (65536 steps) PWM grayscale control
16 scan line switches with 190-mΩ R_DS(ON)
Ultra-low power consumption
- Independent V_CC down to 2.5 V
- Lowest I_CC down to 3.6 mA with 50-MHz GCLK
- Intelligent power saving mode with I_CC down to 0.9 mA
Built-in SRAM to support 1–64 multiplexing
- Single device to support 48 × 16 LEDs or 16 × 16 RGB pixels
- Dual devices stackable to support 96 × 32 LEDs or 32 × 32 RGB pixels
- Three devices stackable to support 144 × 48 LEDs or 48 × 48 RGB pixels
- Four devices stackable to support 192 × 64 LEDs or 64 × 64 RGB pixels
High speed and low EMI Continuous Clock Series Interface (CCSI)
- Only three wires: SCLK / SIN / SOUT
- External 50-MHz (max.) SCLK with rising-edge transmission mechanism
- Internal frequency multiplier to support high frequency GCLK
Optimized performances for LED matrix displays
- Upside and downside ghosting removal
- Low grayscale enhancement
- LED open, weak-short, short detection and removal
LP5891MRRFR supports –55°C to approximately 125°C operating ambient temperature