LP5867
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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
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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LP5867 7 × 6 LED Matrix Driver with 8-Bit Analog and 8-Bit or 16-Bit PWM Dimming datasheet (Rev. A) | PDF | HTML | 2024年 4月 14日 |
| Certificate | LP5867WCSPEVM EU Declaration of Conformity (DoC) | 2024年 2月 26日 | ||
| EVM User's guide | LP5867 Evaluation Module | PDF | HTML | 2024年 2月 21日 |
設計與開發
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LP5867WCSPEVM — LP5867 評估模組
LP5867 裝置是一款高性能精巧設計，共整合 6 個定電流汲極與 7 個切換 MOSFET，可驅動高達 42 個 LED 點或 14 個 RGB LED 像素。每個 LED 點具有 8 位元類比及 8 位元或 16 位元可配置 PWM 調光方式的支援，可進行流暢且無噪音的調光控制。LP5867EVM 有助於使用者評估德州儀器 LP5867 LED 矩陣驅動器的功能。使用此套件可輕鬆驗證 LP5867 功能、RGB LED 矩陣性能和簡單的動態效應。
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YBH) | 24 | Ultra Librarian |
訂購與品質
- 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
- 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。