SNVC125 — LP8557 evaluation program
지원되는 제품 및 하드웨어
제품
백라이트 LED 드라이버
- LP8557 — 태블릿용 고효율 LED 백라이트 드라이버
하드웨어 개발
평가 보드
- LP8557IEVM — I2C 제어를 지원하는 LP8557 고효율 백색 LED 백라이트 드라이버용 평가 모듈
The LP8557 and LP8557I are high-efficiency LED drivers each featuring an integrated DC-DC inductive boost converter and six high-precision current sinks. LP8557 is intended for applications that exclusively use a pulse width modulated (PWM) signal for controlling the brightness while LP8557I is intended for applications that can utilize an I2C master as well.
The boost converter has adaptive output voltage control. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level under all conditions.
The adaptive current sink headroom voltage control scales the headroom voltage with the LED current for optimal system efficiency.
The LED string auto-detect function enables use of the same device in systems with 1 to 6 LED strings for the maximum design flexibility.
Proprietary hybrid PWM plus current mode dimming enables additional system power savings. Phase-shift PWM allows reduced audible noise and smaller boost output capacitors.
Flexible CABC support combines brightness level selections based on the PWM input and I2C commands.
For all available packages, see the orderable addendum at the end of the data sheet.| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LP8557 High-Efficiency LED Backlight Driver For Tablets datasheet (Rev. B) | PDF | HTML | 2015/12/18 |
| White paper | Common LED Functions and LED Driver Design Considerations | 2020/09/21 | ||
| Application note | Some Guidelines and Tips for the LED Driver Application | 2019/08/14 | ||
| Application note | Inductor Selection in Boost Converters for LCD Backlight Applications | 2016/10/24 | ||
| Application note | Schottky Diode Selection in Asynchronous Boost Converters | 2016/09/06 | ||
| EVM User's guide | LP8557 Evaluation Module | 2013/12/17 |
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LP8557IEVM is a 6-channel high efficiency LCD backlight driver evaluation kit that includes an I2C compatible program and USB2ANY adapter board with mini USB cable that exercises the part in a simple way. The status of the device is monitored by the evaluation software and the various (...)
Available in Linux Main line: Yes
Available through git.ti.com: N/A
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| DSBGA (YFQ) | 16 | Ultra Librarian |