開發模組 (EVM) 的 GUI
LP5024
- 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.
技術文件
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檢視所有 7 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LP50xx 18-, 24-Channel, 12-Bit, PWM Ultralow-Quiescent-Current, I2 C RGB LED Drivers datasheet (Rev. C) | PDF | HTML | 2024年 7月 8日 |
| White paper | Common LED Functions and LED Driver Design Considerations | 2020年 9月 21日 | ||
| Application note | System Design Guidelines for Full-Color RGB LED Matrix Based on LP50xx Device | 2020年 4月 8日 | ||
| Application note | How to Select a RGB LED Driver | 2019年 8月 8日 | ||
| White paper | 智慧型喇叭基本說明： 衡量各種設計優缺點 | 2019年 2月 8日 | ||
| Technical article | Using an RGBW LED driver to elevate LED human-machine interface designs | PDF | HTML | 2018年 11月 27日 | |
| EVM User's guide | LP5024EVM User's Guide | 2018年 3月 14日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
開發板
LP5024EVM — LP5024 12 位元 PWM 超靜態電流 I2C RGB LED 驅動器評估模組
This board evaluates the LP5024 I2C bus-controlled, 24-channel, constant-current LED driver. The user's guide includes set-up instructions, a schematic diagram, a bill of materials, printed-circuit board layout drawings, and software instructions.
使用指南: PDF
模擬工具
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
參考設計
TIDA-050011 — 各種 LED 環形燈照明圖案參考設計
This reference design enables human-machine interface scenarios with an LED ring that utilizes two LP5024 LED drivers to create vivid lighting patterns. Design helps to resolve common challenges for end equipment with complicated lighting patterns and constant voltage supply. This design can also (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RSM) | 32 | Ultra Librarian |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。