RT4505中文資料1.5A Flash LED Driver with High-Side Current Source數(shù)據(jù)手冊Richtek規(guī)格書
RT4505規(guī)格書詳情
描述 Description
The RT4505 is a maximum 4MHz frequency synchronous Boost converter plus a 1.5A constant current driver for a high current white LED. The high-side current source allows for grounded cathode LED operation providing flash current up to 1.5A. An adaptive regulation method ensures the current source remains in regulation and maximizes efficiency.
The RT4505 is controlled via an I2C-compatible interface. Features include a hardware flash enable (STROBE) allowing a logic input to trigger the flash pulse as well as a TX input which forces the flash pulse into a low current, allowing for synchronization to RF power amplifier events or other high-current conditions.
The maximum 4MHz switching frequency, over-voltage protection and adjustable current limit settings allow the use of tiny, low-profile inductors and ceramic capacitors. The device is available in a small WL-CSP-9B 1.3x1.37 (BSC) package, and operates within the -40°C to 85°C temperature range.
特性 Features
?1.5A High-Side Current Source for Single LED
?Typical 5% LED Current Accuracy
?Programmable Flash LED Current from 93.74mA to 1.5A
?Built-In Soft-Start Operation for Battery Protection
?VIN Flash Monitor Optimization
?Synchronization Input for RF Power Amplifier Pulse Events
?9-Ball WL-CSP Package
?RoHS Compliant and Halogen Free
應(yīng)用 Application
? Camera Phone LED Flash
技術(shù)參數(shù)
- 制造商編號
：RT4505
- 生產(chǎn)廠家
：Richtek
- Vin(min)(V)
：2.5
- Vin(max)(V)
：5.5
- SWFreq(typ)(kHz)
：4000
- NumberofLEDs(max)(pcs)
：1
- Iout(max)/channel(mA)
：1500
- Iq(typ)(mA)
：0.45
- DimmingControl
：I2C
- Topology
：Boost + Current Source
- Features
：OVP;UVP
- Package Type
：WL-CSP1.3x1.37-9
| 供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
|---|---|---|---|---|---|---|---|
Richtek(立崎) |
23+ |
NA |
26094 |
10年以上分銷經(jīng)驗原裝進(jìn)口正品,做服務(wù)型企業(yè) |
詢價 | ||
RICHTEK/立锜 |
25+ |
SMD |
880000 |
明嘉萊只做原裝正品現(xiàn)貨 |
詢價 | ||
RICHTEK/立锜 |
25+ |
SOT23-6 |
15000 |
全新原裝現(xiàn)貨,價格優(yōu)勢 |
詢價 | ||
RICHTEK/立锜 |
21+ |
SOT-23-6 |
20000 |
百域芯優(yōu)勢 實單必成 可開13點增值稅 |
詢價 | ||
RICHTEK |
23+ |
QFN |
50000 |
只做原裝正品 |
詢價 | ||
RICHTEK/立锜 |
2023+ |
SOT23-6 |
60000 |
原廠全新正品旗艦店優(yōu)勢現(xiàn)貨 |
詢價 | ||
RICHTEK/立锜 |
22+ |
QFN |
18000 |
原裝正品 |
詢價 | ||
RAFAEL |
23+ |
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 | |||
RICHTEK |
1728+ |
SOT23-6 |
9700 |
只做原裝進(jìn)口,假一罰十 |
詢價 | ||
RICHTEK/立锜 |
23+ |
SOT23 |
3000 |
原裝正品假一罰百!可開增票! |
詢價 |
