LM3632A
- Drives up to Two Strings of Typically Eight LEDs
in Series- Integrated Backlight Boost with 29-V Maximum
Output Voltage - Two Low-Side Constant-Current LED Drivers
with 25-mA Maximum Output Current
- Integrated Backlight Boost with 29-V Maximum
- Backlight Efficiency Up to 90%
- 11-Bit Exponential or Linear Dimming
- External PWM Input for CABC Backlight
Operation - LCD Bias Efficiency > 85%
- Programmable Positive LCD bias, 4-V to 6-V, 50-
mA Maximum Output Current - Programmable Negative LCD bias, –4-V to –6-V,
50-mA Maximum Output Current - 1.5-A Flash LED Boost
- Flash Efficiency > 85%
- 2.7-V to 5-V Input Voltage Range
The LM3632A integrates the WLED drivers for both the backlight of the LCD panel and the camera flash along with the bias power for the LCD panel into one device. The device has all the safety features required in LED drivers with up to 90% efficiency and bias positive/negative power rails achieving 1.5% accuracy. Capable of driving up to 16 backlight LEDs, the device is ideal for small- to medium-size displays. A 1.5-A constant-current LED driver powered by a synchronous boost converter can be used for flash applications. The high-side flash current source allows for grounded cathode LED operation.
A high level of integration and programmability allows the LM3632A to address a variety of applications without the need for hardware changes.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | LM3632A Single-Chip Backlight With Bias Power and 1.5-A Flash LED Driver データシート (Rev. A) | PDF | HTML | 2015/09/10 | ||
| ホワイト・ペーパー | Common LED Functions and LED Driver Design Considerations.. | 英語版 | 2020/09/21 | |||
| アプリケーション・ノート | Analog PWM Dimming in White-LED Drivers | 2016/12/21 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
LM3532SW-LINUX — LM3532 向け Linux ドライバ
The Linux driver supports the LMU(Lighting Management Unit) devices for smartphone handsets. The Linux driver supports communication through the I2C bus and interfaces with various sub-systems.
Linux Mainline Status
Available in Linux Main line: No
Available through git.ti.com: (...)
SNVC182 — LM3632EVM GUI v1.0
| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| DSBGA (YFF) | 30 | Ultra Librarian |