RT4539A中文資料立锜科技數(shù)據(jù)手冊(cè)PDF規(guī)格書
| 廠商型號(hào) |
RT4539A |
| 功能描述 | 39V High Efficiency Boost Converter with I2C Controlled 6-CH LED Driver |
| 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【立锜科技】 |
| 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 | 2025-7-15 18:50:00 |
| 人工找貨 | RT4539A價(jià)格和庫(kù)存，歡迎聯(lián)系客服免費(fèi)人工找貨 |
RT4539A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 |
|---|---|---|---|---|---|---|---|
RICHTEK/立锜 |
21+ |
QFN |
20000 |
芯優(yōu)勢(shì) 實(shí)單必成 可開13點(diǎn)增值稅發(fā)票 |
詢價(jià) | ||
RAFAELMICRO |
21+ |
QFN |
1574 |
詢價(jià) | |||
RAFAELMIC |
20+ |
QFN |
19570 |
原裝優(yōu)勢(shì)主營(yíng)型號(hào)-可開原型號(hào)增稅票 |
詢價(jià) | ||
RAFA |
24+ |
QFN |
12000 |
原裝正品 假一罰十 可拆樣 |
詢價(jià) | ||
RAFAELMICRO |
21+ |
QFN |
1000 |
原裝現(xiàn)貨假一賠十 |
詢價(jià) | ||
RAFAELMICRO |
2023+ |
QFN |
6895 |
原廠全新正品旗艦店優(yōu)勢(shì)現(xiàn)貨 |
詢價(jià) | ||
23+ |
CAN |
11200 |
原廠授權(quán)一級(jí)代理、全球訂貨優(yōu)勢(shì)渠道、可提供一站式BO |
詢價(jià) | |||
RICHTEK/立锜 |
25+ |
QFN |
880000 |
明嘉萊只做原裝正品現(xiàn)貨 |
詢價(jià) | ||
RICHTEK/立锜 |
21+ |
QFN |
20000 |
百域芯優(yōu)勢(shì) 實(shí)單必成 可開13點(diǎn)增值稅發(fā)票 |
詢價(jià) | ||
RICHTEK/立锜 |
24+ |
QFN |
22500 |
原裝現(xiàn)貨假一賠十 |
詢價(jià) |
