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RT4539AGQW中文資料立锜科技數(shù)據(jù)手冊PDF規(guī)格書
| 廠商型號 |
RT4539AGQW |
| 功能描述 | 39V High Efficiency Boost Converter with I2C Controlled 6-CH LED Driver |
| 絲印標識 | |
| 封裝外殼 | WQFN-24L |
| 文件大小 |
1.12591 Mbytes |
| 頁面數(shù)量 |
39 頁 |
| 生產(chǎn)廠商 | Richtek Technology Corporation |
| 企業(yè)簡稱 |
RICHTEK【立锜科技】 |
| 中文名稱 | 立锜科技股份有限公司官網(wǎng) |
| 原廠標識 |  |
| 數(shù)據(jù)手冊 | |
| 更新時間 | 2025-7-22 17:12:00 |
| 人工找貨 | RT4539AGQW價格和庫存，歡迎聯(lián)系客服免費人工找貨 |
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 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
|---|---|---|---|---|---|---|---|
RAFAELMIC |
23+ |
QFN |
8678 |
原廠原裝 |
詢價 | ||
RICHTEK/立锜 |
25+ |
QFN |
880000 |
明嘉萊只做原裝正品現(xiàn)貨 |
詢價 | ||
RICHTEK/立锜 |
21+ |
QFN |
20000 |
百域芯優(yōu)勢 實單必成 可開13點增值稅發(fā)票 |
詢價 | ||
RICHTEK/立锜 |
2450+ |
NA |
6885 |
只做原裝正品假一賠十為客戶做到零風(fēng)險!! |
詢價 | ||
RAFA |
24+ |
QFN |
12000 |
原裝正品 假一罰十 可拆樣 |
詢價 | ||
23+ |
CAN |
11200 |
原廠授權(quán)一級代理、全球訂貨優(yōu)勢渠道、可提供一站式BO |
詢價 | |||
RAFA |
14+ |
QFN |
120 |
一級代理,專注軍工、汽車、醫(yī)療、工業(yè)、新能源、電力 |
詢價 | ||
Rafaelmicro |
23+ |
QFN |
15000 |
一級代理原裝現(xiàn)貨 |
詢價 | ||
RICHTEK(立锜) |
24+ |
QFN |
7350 |
現(xiàn)貨供應(yīng),當天可交貨!免費送樣,原廠技術(shù)支持!!! |
詢價 | ||
ROFOELMICRO |
2223+ |
QFN20 |
26800 |
只做原裝正品假一賠十為客戶做到零風(fēng)險 |
詢價 |
