開發模組 (EVM) 的 GUI
LM36923
- 1% Matched Current Sinks Across (Process, Voltage, Temp)
- 3% Current Sink Accuracy Across (Process, Voltage, Temp)
- 11-Bit Dimming Resolution
- Up to 91.6% Solution Efficiency
- Drives from One to Three Parallel LED Strings at up to 28 V
- PWM Dimming Input
- I2C Programmable
- Selectable 500-kHz and 1-MHz Switching Frequency with Optional –12% shift
- Auto Switch Frequency Mode (250 kHz, 500 kHz, 1 MHz)
- Four Configurable Overvoltage Protection Thresholds (17 V, 21 V, 25 V, 29 V)
- Four Configurable Overcurrent Protection Thresholds (750 mA, 1000 mA, 1250 mA, 1500 mA)
- Thermal Shutdown Protection
The LM36923 is an ultra-compact, highly efficient, threestring white-LED driver designed for LCD display backlighting. The device can power up to 8 series LEDs at up to 25 mA per string. An adaptive current regulation method allows for different LED voltages in each string while maintaining current regulation.
The LED current is adjusted via an I2C interface or through a logic level PWM input. The PWM duty cycle is internally sensed and mapped to an 11-bit current thus allowing for a wide range of PWM frequencies and noise-free operation.
The device operates over the 2.5-V to 5.5-V input voltage range and -40°C to 85°C temperature range.
For all available packages, see the orderable addendum at the end of the data sheet.技術文件
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檢視所有 8 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM36923 Highly Efficient Triple-String White LED Driver datasheet (Rev. A) | PDF | HTML | 2016年 10月 7日 |
| Application note | How to use the LM3697 Device to Design a Backlight Unit in a Smartphone | PDF | HTML | 2021年 4月 15日 | |
| White paper | Common LED Functions and LED Driver Design Considerations | 2020年 9月 21日 | ||
| Application note | Analog PWM Dimming in White-LED Drivers | 2016年 12月 21日 | ||
| Application note | Inductor Selection in Boost Converters for LCD Backlight Applications | 2016年 10月 24日 | ||
| Application note | Auto-Frequency Mode Setting for Improved Boost Efficiency in White LED Backlight | 2016年 10月 14日 | ||
| Application note | Schottky Diode Selection in Asynchronous Boost Converters | 2016年 9月 6日 | ||
| EVM User's guide | Using the LM36923EVM Evaluation Module | 2015年 3月 5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
LM36923EVM — LM36923EVM 高效率三燈串白色 LED 驅動器 EVM
The LM36923 Evaluation Module (LM36923EVM) is designed to fully evaluate the LM36923 Highly Efficient Triple-String White LED backlight driver. The LM36923EVM consists of the LM36923 with 3p8s white LED strings with jumpers to enable 1p2s thru 3p8s led string configurations. LED string (...)
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 (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YFF) | 12 | 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。