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RT4539AGQW中文資料RichTek數(shù)據(jù)手冊(cè)PDF規(guī)格書
| 廠商型號(hào) |
RT4539AGQW |
| 功能描述 | 39V High Efficiency Boost Converter with I2C Controlled 6-CH LED Driver |
| 絲印標(biāo)識(shí) | |
| 封裝外殼 | WQFN-24L |
| 文件大小 |
1.12591 Mbytes |
| 頁(yè)面數(shù)量 |
39 頁(yè) |
| 生產(chǎn)廠商 | Richtek Technology Corporation |
| 企業(yè)簡(jiǎn)稱 |
RichTek |
| 中文名稱 | 立锜科技股份有限公司官網(wǎng) |
| 原廠標(biāo)識(shí) |  |
| 數(shù)據(jù)手冊(cè) | |
| 更新時(shí)間 | 2025-1-23 9:06:00 |
RT4539AGQW規(guī)格書詳情
General Description
The RT4539A is a high efficiency driver for white LEDs. It is suitable for single/two cell battery input to drive LED light bars which contains six strings in parallel. The internal current sinks support a maximum of ±2 current mismatching for excellent brightness uniformity in each string of LEDs. To provide enough headroom for current sink operation, the Boost converter monitors the minimum voltage of the feedback pins and regulates an optimized output voltage for power efficiency.
The RT4539A has a wide input voltage operating range from 2.7V to 24V and contains I2C interface for controlling the dimming mode, operating frequency and the LED current. The internal 250mΩ, 39V power switch with current-mode control provides over-current protection. The switching frequency of the RT4539A is adjustable from 300kHz to 1.6MHz, which allows flexibility between efficiency and component size.
The RT4539A are available in the WL-CSP-20B 1.71x2.371 (BSC) and WQFN-24L 4x4 packages.
Applications
? Tablet and Notebook Backlight
Features
? Wide Operating Input Voltage: 2.7V to 24V
? High Output Voltage: Up to 39V
? Programmable Channel Current: 10.04mA to 35mA
? Channel Current Regulation with Accuracy ±3 and Matching ±2
? Dimming Controls
? Direct PWM Dimming up to 20kHz and Minimum On-Time to 400ns
? PWM to Analog Dimming up to 20kHz with 9-bit Resolution
? PWM Pin and/or I2C-Controlled with Programmable Linear@12 bits or Exponential@11 bits Brightness Control
? Digitally Advanced Sloping for Smooth Dimming
? Adjustable Dimming Mode Control.
? Adjustable Advanced Brightness Control.
? Adjustable Switching Frequency of Boost Converter from 300kHz to 1.6MHz.
? PFM function for High Efficiency at Light Load
? Programmable Spread Spectrum Scheme and Edge Rate Control Minimize Switching Noise and Improve EMI Performance
? Protections
? LED Strings Open Detection
? LED Strings Short Protection
? Programmable Current Limit of Boost.
? Programmable Over-Voltage Protection Level
? Over-Temperature Protection
? Integrated Memory by MTP
? 20-Ball WL-CSP, with pitch 0.4mm and 24-Lead WQFN Packages
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫(kù)存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
24+ |
N/A |
64000 |
一級(jí)代理-主營(yíng)優(yōu)勢(shì)-實(shí)惠價(jià)格-不悔選擇 |
詢價(jià) | |||
RICHTEK/立锜 |
24+ |
QFN |
22500 |
原裝現(xiàn)貨假一賠十 |
詢價(jià) | ||
RICHTEK/立锜 |
22+ |
QFN |
50000 |
只做原裝正品,假一罰十,歡迎咨詢 |
詢價(jià) | ||
RICHTEK/立锜 |
22+ |
QFN |
6000 |
進(jìn)口原裝 假一罰十 現(xiàn)貨 |
詢價(jià) | ||
rafaelmicro |
23+ |
QFN |
50000 |
全新原裝正品現(xiàn)貨,支持訂貨 |
詢價(jià) | ||
rafaelmicro |
21+ |
QFN |
9866 |
詢價(jià) | |||
MAXIM/美信 |
23+ |
DIP24 |
69820 |
終端可以免費(fèi)供樣,支持BOM配單! |
詢價(jià) | ||
BB |
24+ |
CAN3 |
6430 |
原裝現(xiàn)貨/歡迎來(lái)電咨詢 |
詢價(jià) | ||
RAFAELMICRO |
22+ |
QFN |
9609 |
只有原裝 低價(jià) 實(shí)單必成 |
詢價(jià) | ||
RAFAELMICRO |
21+ |
QFN |
1574 |
詢價(jià) |
