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LP5868

ACTIVO

Controlador de matriz de 8 × 18 LED con regulación analógica de 8 bits y PWM de 8/16 bits

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LP5868

ACTIVO
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Detalles del producto

Number of channels 18 LED current per channel (mA) 50 LED configuration Matrix Program memory Yes Topology Linear Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.9 Features Analog/PWM mixed dimming, Constant current, Enable/Shutdown, LED Open Detection, LED Short Detection, SPI/I2C, Thermal shutdown Iq (typ) (mA) 4.3 Shutdown current (ISD) (typ) (µA) 1 Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 18 LED current per channel (mA) 50 LED configuration Matrix Program memory Yes Topology Linear Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.9 Features Analog/PWM mixed dimming, Constant current, Enable/Shutdown, LED Open Detection, LED Short Detection, SPI/I2C, Thermal shutdown Iq (typ) (mA) 4.3 Shutdown current (ISD) (typ) (µA) 1 Operating temperature range (°C) -40 to 85 Rating Catalog
VQFN (RKP) 40 25 mm² 5 x 5

  • LED matrix topology:

    • 18 constant current sinks with 8 scan switches for 144 LED dots
    • Configurable for 1 to 8 scan switches

  • Operating voltage range:
    • VCC/VLED range: 2.7 V to 5.5 V
    • Logic pins compatible with 1.8 V, 3.3 V, and 5 V
  • 18 constant current sinks with high precision:
    • 0.1 mA–50 mA per current sink when VCC ≥ 3.3 V
    • Device-to-device error: ±3% when channel current = 50 mA
    • Channel-to-channel error: ±3% when channel current = 50 mA
    • Phase-shift for balanced transient power
  • Ultra-low power consumption:
    • Shutdown mode: ICC ≤ 1 uA when EN = Low
    • Standby mode: ICC ≤ 10 uA when EN = High and CHIP_EN = 0 (data retained)
    • Active Mode: ICC = 4.3 mA (typ.) when channel current = 5 mA
  • Flexible dimming options:
    • Individual ON and OFF control for each LED dot
    • Analog dimming (current gain control)
      • Global 3-bit Maximum Current (MC) setting for all LED dots
      • 3 groups of 7-bit Color Current (CC) setting for red, green, and blue
      • 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 and short detection
  • Deghosting and low brightness compensation
  • Interface options:
    • 1-MHz (max.) I2C interface when IFS = Low
    • 12-MHz (max.) SPI interface when IFS = High

  • LED matrix topology:

    • 18 constant current sinks with 8 scan switches for 144 LED dots
    • Configurable for 1 to 8 scan switches

  • Operating voltage range:
    • VCC/VLED range: 2.7 V to 5.5 V
    • Logic pins compatible with 1.8 V, 3.3 V, and 5 V
  • 18 constant current sinks with high precision:
    • 0.1 mA–50 mA per current sink when VCC ≥ 3.3 V
    • Device-to-device error: ±3% when channel current = 50 mA
    • Channel-to-channel error: ±3% when channel current = 50 mA
    • Phase-shift for balanced transient power
  • Ultra-low power consumption:
    • Shutdown mode: ICC ≤ 1 uA when EN = Low
    • Standby mode: ICC ≤ 10 uA when EN = High and CHIP_EN = 0 (data retained)
    • Active Mode: ICC = 4.3 mA (typ.) when channel current = 5 mA
  • Flexible dimming options:
    • Individual ON and OFF control for each LED dot
    • Analog dimming (current gain control)
      • Global 3-bit Maximum Current (MC) setting for all LED dots
      • 3 groups of 7-bit Color Current (CC) setting for red, green, and blue
      • 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 and short detection
  • Deghosting and low brightness compensation
  • Interface options:
    • 1-MHz (max.) I2C interface when IFS = Low
    • 12-MHz (max.) SPI interface when IFS = High

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

The LP586x devices are a family of high performance LED matrix drivers. The device integrates 18 constant current sinks with N (N = 1/2/4/6/8/11) switching MOSFETs to support N × 18 LED dots or N × 6 RGB LEDs. The LP5868 integrates eight MOSFETs for up to 144 LED dots or 48 RGB LEDs.

The LP5868 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 LP5868 device implements full addressable SRAM to minimize the data traffic. The ghost-cancellation circuitry is integrated to eliminate both upside and downside ghosting. The LP5868 also supports LED open and short detection functions. Both 1-MHz (maximum) I2C and 12-MHz (maximum) SPI are available in LP5868.

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

The LP586x devices are a family of high performance LED matrix drivers. The device integrates 18 constant current sinks with N (N = 1/2/4/6/8/11) switching MOSFETs to support N × 18 LED dots or N × 6 RGB LEDs. The LP5868 integrates eight MOSFETs for up to 144 LED dots or 48 RGB LEDs.

The LP5868 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 LP5868 device implements full addressable SRAM to minimize the data traffic. The ghost-cancellation circuitry is integrated to eliminate both upside and downside ghosting. The LP5868 also supports LED open and short detection functions. Both 1-MHz (maximum) I2C and 12-MHz (maximum) SPI are available in LP5868.
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Documentación técnica

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* Data sheet LP5868 8 × 18 LED Matrix Driver With 8-Bit Analog and 8-/16-Bit PWM Dimming datasheet PDF | HTML 01 dic 2021

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