設計工具
LP887X-LP889X-DESIGN — Design resources for LP887x/LP889x family
Design resources for LP887x/LP889x family
LP8873-Q1
- AEC-Q100 qualified for automotive applications:
- Device temperature grade 1: –40°C to +125°C, TA
- Input voltage operating range 3V to 48V
- Four high-precision current sinks
- Up to 150mA DC current for each channel
- Current matching 1% (typical)
- High dimming ratio 32 000:1 using 152Hz LED output PWM frequency
- Up to 16-bit LED PWM dimming resolution with I2C, or PWM input
- Support independent PWM dimming control for each channel
- Auto-phase shift PWM dimming and direct PWM dimming
- Hybrid dimming and 12-bit analog dimming
- Up to 48V VOUT boost or SEPIC DC/DC converter
- Integrated 5.4A switching FET
- Support boost/sepic operation
- Higher efficiency with 60mΩ RDSON and fast switching
- Boost selectable dual random spread spectrum for reduced EMI
- Adjustable soft start of converter
- Boost sync input to set boost switching frequency from an external clock
- Output voltage automatically discharged when boost is disabled
- Extensive fault detection and protection
- Up to 1MHz I2C control interface with CRC check
- Bit-integrity (CRC) error detection on internal configuration registers and non-volatile memory (NVM)
- Input voltage OVP, UVLO and OCP
- Boost overcurrent and overvoltage protection
- LED open, short and short to ground fault detection
- Thermal warning and thermal shutdown
- Small solution size and low cost
- Dynamically programmable wide switching frequency from 100kHz to 2.2MHz
- Available in 4mm × 4mm HotRod™ QFN package with wettable flank
The LP8873-Q1 is an automotive high-efficiency, low-EMI and easy-to-use LED driver with integrated DC-DC power switch. The DC-DC converter supports both boost and SEPIC topology configuration. The four high-precision current sinks support PWM phase shifting that is automatically adjusted based on the number of channels in use. LED brightness can be controlled globally through the I²C interface or PWM input.
The boost converter has adaptive output voltage control based on the headroom voltages of the LED current sinks. This feature minimizes the power consumption by adjusting the boost voltage to the lowest sufficient level in all conditions.
The LP8873-Q1 supports built-in hybrid PWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.
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檢視所有 1 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LP8873-Q1 Automotive Display LED-Backlight Driver with Four 150 mA Channels datasheet | PDF | HTML | 2025年 7月 20日 |
設計與開發
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開發板
LP8870Q1EVM — LP8870-Q1 評估模組
德州儀器 LP8870-Q1 評估模組 (EVM) 可協助設計人員評估 LP8870-Q1 裝置的運作情形及性能。此文件包括 LP8870Q1EVM 的硬體設定說明、軟體說明、完整電路圖、印刷電路板 (PCB) 佈局和物料清單 (BOM)。
模擬工具
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。
PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。
在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。
在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 28 | Ultra Librarian |
| VQFN-HR (RBB) | 24 | 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。