LP5867YBHR-Texas Instruments-Price, Stock & Datasheet

Electronic devices are becoming smarter, requiring to use larger quantity of LEDs for animation and indication purposes and high performance LED matrix driver is required to improve user experience with small solution size.

The LP5867 is a high performance LED matrix drivers. The devices integrate 6 constant current sinks with N (N = 7) switching MOSFETs to support N × 6 LED dots or N × 2 RGB LEDs. The LP5867 integrates 7 MOSFETs for up to 42 LED dots or 14 RGB LEDs.

The LP5867 supports both analog dimming and PWM dimming methods. For analog dimming, each LED dot can be adjusted with 256 steps. For PWM dimming, the integrated 8-bit or 16-bit configurable PWM generators enable smooth and audible-noise-free dimming control. Each LED dot can also be arbitrarily mapped into 8-bit Group PWM to achieve dimming control together.

The LP5867 device implements full addressable SRAM to minimize the data traffic. The ghost-cancellation circuitry is integrated to eliminate both upside and downside ghosting. The LP5867 also supports LED open and short detection functions. Both 1MHz (maximum) I2C and 12MHz (maximum) SPI are available in LP5867.

LED matrix topology:
- 6 constant current sinks with 7 scan switches for 42 LED dots
- Configurable for 1 to 7 scan switches
Operating voltage range:
- VCC/VLED range: 2.7V to 5.5V
- Logic pins compatible with 1.8V, 3.3V, and 5V
6 constant current sinks with high precision:
- 0.1mA-50mA per current sink when VCC ≥ 3.3V
- Device-to-device error: ±3% when channel current = 50mA
- Channel-to-channel error: ±3% when channle current = 50mA
- Phase-shift for balanced transient power
Ultra-low power consumption:
- Shutdown mode: ICC ≤ 1µA when EN = Low
- Standby mode: ICC ≤ 10µA when EN = High and CHIP_EN = 0 (data retained)
- Active mode: ICC = 4.2mA (typ.) when channel current = 5mA
Flexible dimming options:
- Individual ON/OFF control for each LED dot
- Analog dimming (current gain control)
  - Global 7-step Maximum Current (MC) setting for all LED dots
  - 3 groups of 7-bit Color Current (CC) RGB setting
  - Individual 8-bit Dot Current (DC) setting for each LED dot
- PWM dimming with audible-noise-free frequency
  - Global 8-bit PWM dimming for all LED dots
  - 3 programmable groups of 8-bit PWM dimming for LED dot arbitrary mapping
  - Individual 8-bit or 16-bit PWM dimming for each LED dot
Full addressable SRAM to minimize data traffic
Individual LED dot open/short detection
De-ghosting and low brightness compensation
Interface options:
- 1MHz (max.) I2C interface when IFS = Low
- 12MHz (max.) SPI interface when IFS = High