LP5030
- Operating
Voltage Range:
- VCC Range: 2.7 V to 5.5 V
- EN, SDA, and SCL Pins Compatible With 1.8-V, 3.3-V, and 5-V Power Rails
- Output Maximum Voltage: 6 V
- 36 Constant-Current Sinks With
High Precision
- 25.5 mA Maximum per Channel When VCC in Full Range
- 35 mA Maximum per Channel When VCC ≥ 3.3 V
- Device-to-Device Error ±5%; Channel-to-Channel Error ±5%
- Ultralow Quiescent
Current:
- Shutdown Mode: 1 µA (Maximum) When EN Low
- Power Saving Mode: 12 µA (Maximum) When EN High and All LEDs Off for > 30 ms
- Integrated 12-Bit, 29-kHz 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-Shifting PWM 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 400-kHz Fast-Mode I2C Speed
Efficient and high-performance LED response effects, such as blinking, breathing, and chasing, are critical to improving end-user experience in many human machine interface (HMI) applications.
The LP503x device is a 30- or 36-channel constant-current-sink LED driver. The LP503x has a 29 kHz, 12-Bit PWM generator for each channel, as well as channel/module independent color mixing and intensity control, formerly called brightness control registers to enable vivid LED effects with zero audible noise. Users can benefit from the device’s ultra-low shutdown Iq Power Saving Mode, while designers will appreciate the incredibly straightforward software coding of the LP503x’s three programmable R G B banks.
The LP503x device controls each LED output with a 12-bit PWM resolution at 29-kHz switching frequency. This control helps get an intensity that decreases smoothly and stops audible noise. Having different color-mixing and intensity-control registers makes writing the software code straightforward. When targeting fade-in, fade-out type breathing effects, the global R, G, B bank control reduces the microcontroller loading significantly. The LP503x device also implements a PWM phase-shifting function to help reduce the input power budget when LEDs turn on simultaneously.
The LP503x device has an automatic power-saving mode to get the ultra-low quiescent current. When channels are all off for 30 ms, the device total power consumption is down to 10 µA, making the LP503x device a possible alternative for battery-powered end equipment.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LP503x 36-, 30-Channel 12-Bit PWM Ultra-low Quiescent Current I2C RGB LED Drivers datasheet (Rev. B) | PDF | HTML | 2019/1/21 | ||
| 白皮書 | Common LED Functions and LED Driver Design Considerations | 2020/9/21 | ||||
| 應用說明 | System Design Guidelines for Full-Color RGB LED Matrix Based on LP50xx Device | 2020/4/8 | ||||
| 應用說明 | How to Select a RGB LED Driver | 2019/8/8 | ||||
| 白皮書 | 智慧型喇叭基本說明： 衡量各種設計優缺點 | Download English Version | 2019/2/8 | |||
| 技術文章 | Using an RGBW LED driver to elevate LED human-machine interface designs | PDF | HTML | 2018/11/27 |
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)。
LP5036EVM — 適用於 LP5030 和 LP5036 的 LP5036EVM、12 位元 PWM 超靜態電流 I2C RGB LED 驅動器評估模組
步驟 1：訂購硬體
步驟 2：下載並安裝 LP50EVM 使用者 GUI，並查看 EVM 使用指南
- 我們的 LP50EVM GUI 可搭配 LP50EVM 使用，以評估 LP50xx 裝置的功能。
步驟 3：如果您打算使用基於 MCU 架構的系統軟體，請參閱此 e2e™ 貼文 以取得參考程式碼範例：
步驟 4：觀看我們的訓練影片，了解有關系統設定的進一步指引。
SLVC713 — LP50EVM GUI
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RJV) | 46 | Ultra Librarian |
訂購與品質
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。