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LP5024

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24-kanaliger I2C-Treiber für RGB-LEDs mit Konstantstrom

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Datenblatt

LP5024

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Number of channels 24 LED current per channel (mA) 35 LED configuration Parallel Program memory No Topology Current Sink Programmable ramp control No Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.84 Features Constant current, Current control, I2C control, Power-save mode Iq (typ) (mA) 0.01 Shutdown current (ISD) (typ) (µA) 0.2 Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 24 LED current per channel (mA) 35 LED configuration Parallel Program memory No Topology Current Sink Programmable ramp control No Vin (min) (V) 2.7 Vin (max) (V) 5.5 Iout (max) (A) 0.84 Features Constant current, Current control, I2C control, Power-save mode Iq (typ) (mA) 0.01 Shutdown current (ISD) (typ) (µA) 0.2 Operating temperature range (°C) -40 to 85 Rating Catalog
VQFN (RSM) 32 16 mm² (4 mm × 4 mm)
  • Operating voltage range:
    • VCC range: 2.7V to 5.5V
    • EN, SDA, and SCL pins compatible with 1.8V, 3.3V, and 5V power rails
    • Output maximum voltage: 6V
  • 24 constant-current sinks with high precision
    • 25.5mA maximum per channel with VCC in full range
    • 35mA maximum per channel when VCC ≥ 3.3V
    • Device-to-device error: ±7%; channel-to-channel error: ±7%
  • Ultralow quiescent current:
    • Shutdown mode: 1µA (maximum) with EN low
    • Power saving mode: 10µA (typical) with EN high and all LEDs off for > 30ms
  • Integrated 12-bit, 29kHz PWM generator for each channel:
    • Independent color-mixing register per channel
    • Independent brightness-control register per RGB LED module
    • Optional logarithmic- or linear-scale brightness control
    • Integrated 3-phase PWM-shifting scheme
  • 3 programmable banks (R, G, B) for easy software control of each color
  • 2 external hardware address pins allow connecting up to 4 devices
  • Broadcast slave address allows configuring multiple devices simultaneously
  • Auto-increment allows writing or reading consecutive registers within one transmission
  • Up to 400kHz fast-mode I2C speed
  • Operating voltage range:
    • VCC range: 2.7V to 5.5V
    • EN, SDA, and SCL pins compatible with 1.8V, 3.3V, and 5V power rails
    • Output maximum voltage: 6V
  • 24 constant-current sinks with high precision
    • 25.5mA maximum per channel with VCC in full range
    • 35mA maximum per channel when VCC ≥ 3.3V
    • Device-to-device error: ±7%; channel-to-channel error: ±7%
  • Ultralow quiescent current:
    • Shutdown mode: 1µA (maximum) with EN low
    • Power saving mode: 10µA (typical) with EN high and all LEDs off for > 30ms
  • Integrated 12-bit, 29kHz PWM generator for each channel:
    • Independent color-mixing register per channel
    • Independent brightness-control register per RGB LED module
    • Optional logarithmic- or linear-scale brightness control
    • Integrated 3-phase PWM-shifting scheme
  • 3 programmable banks (R, G, B) for easy software control of each color
  • 2 external hardware address pins allow connecting up to 4 devices
  • Broadcast slave address allows configuring multiple devices simultaneously
  • Auto-increment allows writing or reading consecutive registers within one transmission
  • Up to 400kHz fast-mode I2C speed

In smart homes and other applications that use human-machine-interaction, high-performance RGB LED drivers are required. LED animation effects such as flashing, breathing, and chasing greatly improve user experience, and minimal system noise is essential.

The LP50xx device is an 18- or 24-channel constant current sink LED driver. The LP50xx device includes integrated color mixing and brightness control, and pre-configuration simplifies the software coding process. Integrated 12-bit, 29kHz PWM generators for each channel enable smooth, vivid color for LEDs, and eliminate audible noise.

The LP50xx device controls each LED output with a 12-bit PWM resolution at 29kHz switching frequency, which helps achieve a smooth dimming effect and eliminates audible noise. The independent color mixing and intensity control registers make the software coding straightforward. When targeting a fade-in, fade-out type breathing effect, the global R, G, B bank control reduces the microcontroller loading significantly. The LP50xx device also implements a PWM phase-shifting function to help reduce the input power budget when LEDs turn on simultaneously.

The LP50xx device implements an automatic power-saving mode to achieve ultralow quiescent current. When channels are all off for 30ms, the device total power consumption is down to 10µA, which makes the LP50xx device a potential choice for battery-powered end equipment.

In smart homes and other applications that use human-machine-interaction, high-performance RGB LED drivers are required. LED animation effects such as flashing, breathing, and chasing greatly improve user experience, and minimal system noise is essential.

The LP50xx device is an 18- or 24-channel constant current sink LED driver. The LP50xx device includes integrated color mixing and brightness control, and pre-configuration simplifies the software coding process. Integrated 12-bit, 29kHz PWM generators for each channel enable smooth, vivid color for LEDs, and eliminate audible noise.

The LP50xx device controls each LED output with a 12-bit PWM resolution at 29kHz switching frequency, which helps achieve a smooth dimming effect and eliminates audible noise. The independent color mixing and intensity control registers make the software coding straightforward. When targeting a fade-in, fade-out type breathing effect, the global R, G, B bank control reduces the microcontroller loading significantly. The LP50xx device also implements a PWM phase-shifting function to help reduce the input power budget when LEDs turn on simultaneously.

The LP50xx device implements an automatic power-saving mode to achieve ultralow quiescent current. When channels are all off for 30ms, the device total power consumption is down to 10µA, which makes the LP50xx device a potential choice for battery-powered end equipment.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt LP50xx 18-, 24-Channel, 12-Bit, PWM Ultralow-Quiescent-Current, I2 C RGB LED Drivers datasheet (Rev. C) PDF | HTML 08.07.2024
Whitepaper Common LED Functions and LED Driver Design Considerations 21.09.2020
Anwendungshinweis System Design Guidelines for Full-Color RGB LED Matrix Based on LP50xx Device 08.04.2020
Anwendungshinweis How to Select a RGB LED Driver 08.08.2019
Whitepaper Smart speaker fundamentals: Weighing the many design trade-offs 25.02.2019
Technischer Artikel Using an RGBW LED driver to elevate LED human-machine interface designs PDF | HTML 27.11.2018

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LP5024EVM — LP5024 – RGB-LED-Treiber mit I2C-Schnittstelle, 12-Bit-PWM und extrem niedrigem Ruhestrom – Evaluier

Diese Platine evaluiert den I2C-busgesteuerten Konstantstrom-LED-Treiber mit 24 Kanälen LP5024. Das Benutzerhandbuch enthält Einrichtungsanweisungen, einen Schaltplan, eine Stückliste, Platinenlayoutzeichnungen und Softwareanweisungen.

Benutzerhandbuch: PDF | HTML
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GUI für Evaluierungsmodul (EVM)

SLVC713 — LP50EVM GUI

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Simulationsmodell

LP5024 & LP5018 PSpice Transient Model

SLVMCI4.ZIP (116 KB) - PSpice-Modell
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Simulationsmodell

LP5024 & LP5018 Unencrypted PSpice Transient Model

SLVMCI3.ZIP (10 KB) - PSpice-Modell
Unterstützte Produkte und Hardware
Referenzdesign

TIDA-050011 — Referenzdesign für verschiedene LED-Ringlichtmuster

Dieses Referenzdesign ermöglicht Mensch-Maschine-Schnittstellen-Szenarien mit einem LED-Ring, der mit zwei LP5024-LED-Treibern lebendige Lichtmuster erzeugt. Das Design hilft beim Lösen häufiger Herausforderungen für Endgeräte mit komplizierten Lichtmustern und konstanter Spannungsversorgung. (...)
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