LP5861T
- Operating voltage range:
- V CC/V LED range: 2.7 V to 5.5 V
- Logic pins compatible with 1.8 V, 3.3 V, and 5 V
- 18 high current and precision constant current sinks:
- 125-mA per current sink when V CC ≥ 3.3 V
- Device-to-device error: ±5%
- Channel-to-channel error: ±5%
- Phase-shift for balanced transient power
- Ultra-low power consumption:
- Shutdown mode: I CC ≤ 2 µA when EN = Low
- Standby mode: I CC ≤ 10 µA when EN = High and CHIP_EN = 0 (data retained)
- Active mode: I CC = 5 mA (typical) when channel current = 12.5 mA
- Flexible dimming options:
- Individual ON/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.) I 2C interface when IFS = Low
- 12-MHz (max.) SPI interface when IFS = High
The LP5861T is a high-current and high-performance LED matrix driver. The device integrates 18 constant current sinks with N (N = 6/8/11) switching MOSFETs to support N × 18 LED dots or N × 6 RGB LEDs. The LP5861T is the direct driving version to support 18 LED dots or 6 RGB LEDs.
The LP5861T 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 LP5861T device implements full addressable SRAM to minimize the data traffic. The ghost-cancellation circuitry is integrated to eliminate both upside and downside ghosting. The LP5861T also supports LED open and short detection functions. Both 1-MHz (maximum) I 2C and 12-MHz (maximum) SPI are available in LP5861T.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LP5861T 18-Channel High-Current LED Driver with 8-Bit Analog and 8-Bit or 16-Bit PWM Dimming datasheet (Rev. A) | PDF | HTML | 2023年 8月 9日 |
| Certificate | LP5861TEVM EU Declaration of Conformity (DoC) | 2023年 6月 30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)。
LP5861TEVM — 適用於 18 通道高電流 LED 驅動器的 LP5861T 評估模組
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 |
|---|---|---|
| VQFN (RSM) | 32 | 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。