| 型號 | 下載 訂購 | 功能描述 | 制造商 上傳企業(yè) | LOGO |
|---|---|---|---|---|
RT8543 | 6-String 43V White LED Driver with Boost Regulator The RT8543 is a high efficiency white LED driver. It is designed for LCD panel that employs an LED array as the lighting source. An integrated switch current mode Boost controller drives six strings in parallel and supports up to 10 pieces of LEDs per string. The internal current sinks support maxim ?Wide Input Voltage : VIN 2.5V to 24V\n?Current Mode Boost Regulator\n?Adjustable Full Channel Current from 5mA to 50mA and Matched to 2%\n?Dimming Controls\n?Built-In Soft-Start to Prevent Inrush Current without External Capacitor\n?Protection\n?20-Lead WQFN and UQFN Package\n?RoHS Compliant an; | Richtek 立锜科技 | Richtek | |
Boost 調(diào)節(jié)器 + 43V, 6通道 LED 定電流驅(qū)動器 RT8543A 是高效率的白光 LED 驅(qū)動器,設(shè)計用于驅(qū)動作為 LCD 屏光源的 LED 數(shù)組。集成了功率開關(guān)的電流模式 Boost 轉(zhuǎn)換器可驅(qū)動6串并聯(lián)連接的 LED 串,每串可有多達(dá)10只 LED 連接在一起。每個內(nèi)置電流源支持最大 ±2% 的電流誤差,確保每串 LED 都有優(yōu)異的亮度一致性。為了提供足夠的操作余量給每個電流源, Boost 控制器對每個回饋端子進(jìn)行監(jiān)控并調(diào)節(jié)至最優(yōu)化之輸出電壓以獲取最好之效率。\n\n RT8543A 可以 2.5V~24V 之寬闊的輸入電壓范圍輸出 5mA~50mA 可調(diào)之電流,內(nèi)部 200mΩ、43V功率開關(guān)以電流模式控制方式提供逐周期過流保 ? 寬輸入電壓范圍: 2.5V~24V\n? 高輸出電壓:VOUT 高達(dá) 43V\n? 電流模式升壓調(diào)節(jié)器?600kHz~1.2MHz開關(guān)頻率?頻率高達(dá)85%\n? 可調(diào)節(jié)電流范圍:5mA~50mA ;匹配誤差:2%\n? 通道電流調(diào)整精度:±3%\n? 調(diào)光控制?直接 PWM 調(diào)光頻率高達(dá) 20kHz,最小導(dǎo)通時間為500ns?PWM 轉(zhuǎn)“模擬+PWM”混合式調(diào)光,信號頻率可高達(dá) 20kHz,最高分辨率可達(dá)8位\n? 無需外部電容,內(nèi)建軟起動避免沖擊電流\n? 關(guān)機(jī)模式下斷開 LED 連接\n? 保護(hù)?LED 串開路保護(hù)?電流限制保護(hù)?可調(diào)節(jié)過壓保護(hù)?過溫保護(hù)\n? ; | Richtek 立锜科技 | Richtek | ||
Package:20-WFQFN 裸露焊盤;包裝:卷帶(TR)剪切帶(CT)Digi-Reel? 得捷定制卷帶 類別:集成電路(IC) LED 驅(qū)動器 描述:IC LED DRVR CTRL PWM 50MA 20WQFN | Richtek USA Inc. | Richtek USA Inc. | ||
One-dimensional PSD Long, narrow active area and surface mountable package 文件:123.32 Kbytes 頁數(shù):2 Pages | HAMAMATSUHamamatsu Photonics Co.,Ltd. 濱松光子濱松光子學(xué)株式會社 | HAMAMATSU | ||
HIGH IP3, MEDIUM POWER DISCRETE SiGe TRANSISTOR 文件:188.41 Kbytes 頁數(shù):5 Pages | RFMD 威訊聯(lián)合 | RFMD | ||
High IP3 Medium Power Discrete SiGe Transistor 文件:102.08 Kbytes 頁數(shù):4 Pages | SIRENZA | SIRENZA |
技術(shù)參數(shù)
- Vin(min)(V):
2.5
- Vin(max)(V):
24
- SWFreq(typ)(kHz):
600
- NumberofLEDs(max)(pcs):
13
- Iout(max)/channel(mA):
50
- Iq(typ)(mA):
4
- DimmingControl:
PWM
- Topology:
Boost + Current Source
- Features:
Adjustable Frequency;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;OCP;OVP
- Package Type:
UQFN4x4-20;WQFN4x4-20
| 供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
|---|---|---|---|---|---|---|---|
RICHTEK/立锜 |
24+ |
QFN |
98743 |
原裝正品現(xiàn)貨供應(yīng) |
詢價 | ||
RICHTEK |
24+ |
QFN |
36500 |
原裝現(xiàn)貨/放心購買 |
詢價 | ||
RICHTEK |
23+ |
NA |
8910 |
專業(yè)電子元器件供應(yīng)鏈正邁科技特價代理特價,原裝元器件供應(yīng),支持開發(fā)樣品 |
詢價 | ||
RICHTEK/立锜 |
20+ |
QFN |
19570 |
原裝優(yōu)勢主營型號-可開原型號增稅票 |
詢價 | ||
RICHTEK |
ROHS+Original |
NA |
8910 |
專業(yè)電子元器件供應(yīng)鏈/QQ 350053121 /正納電子 |
詢價 | ||
RICHTEK/立锜 |
2022+ |
998 |
全新原裝 貨期兩周 |
詢價 | |||
RICHTEK/立锜 |
21+ |
QFN |
78292 |
詢價 | |||
RICHTEK/立锜 |
23+ |
QFN |
8678 |
原廠原裝 |
詢價 | ||
RICHTEK/立锜 |
23+ |
QFN |
50000 |
全新原裝正品現(xiàn)貨,支持訂貨 |
詢價 | ||
RICHTEK/立锜 |
23+ |
QFN |
3000 |
一級代理原廠VIP渠道,專注軍工、汽車、醫(yī)療、工業(yè)、 |
詢價 |
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