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參數(shù)資料
| 型號(hào)： | MIC3289-16YML |
| 廠商： | MICREL INC |
| 元件分類： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | 400 W Transient Voltage Suppressor, SOD123W (SOD2 FlatPower), Reel Pack, SMD |
| 中文描述： | LED DISPLAY DRIVER, DSO8 |
| 封裝： | 2 X 2 MM, MLF-8 |
| 文件頁(yè)數(shù)： | 1/13頁(yè) |
| 文件大小： | 377K |
| 代理商： | MIC3289-16YML |
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MIC3289
1.2MHz PWM White LED Driver with
Internal Schottky Diode and True 1-Wire
Digital Control
PRELIMINARY INFORMATION
General Description
The MIC3289 is a PWM boost-switching regulator that is
optimized
for
constant-current
applications. The MIC3289 features an internal Schottky
diode, allowing an efficient DC/DC solution that requires
only 4 external components.
The MIC3289 allows for a single wire simple digital
interface to control the dimming over 16 steps with a log
scale to give better resolution at the lower currents to
better match the sensitivity of the human eye
The feedback voltage of the MIC3289 is only 250mV,
allowing high efficiency while retaining excellent accuracy
for the white LED current.
The MIC3289 implements a constant frequency 1.2MHz
PWM control scheme. The high frequency PWM operation
saves board space by reducing external component sizes.
The 1.2MHz PWM scheme also reduces switching noise
and ripple to the input power source.
The 2.5V to 6.5V input voltage range of MIC3289 allows
direct operation from single cell Li Ion as well as 3- to 4-
cell NiCad/ NiMH/Alkaline batteries. Battery life is
preserved with a low 1μA shutdown current.
The MIC3289 is available in a low profile Thin SOT23 6-
lead package and a 2mm × 2mm MLF
-8L package and
has a junction temperature range of –40
°
C to +125
°
C.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
MicroLead Frame and MLF are registered trademarks of Amkor Technologies.
Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (
408
) 944-0800 fax + 1 (408) 474-1000 http://www.micrel.com
March 2007
M9999-030407
(408) 944-0800
white
LED
driver
Features
2.5V to 6.5V input voltage
Output voltage up to 24V
16V & 24V OVP options
Single wire combines 16 level logarithmic brightness &
shutdown control
Internal Schottky diode
1.2 MHz PWM operation
Over 500mA switch current
Programmable
±
5% current control
<1% line and load regulation
<1
μ
A shutdown current
Over temperature protection
UVLO
Thin SOT23-6L package option
2mm × 2mm leadless MLF
-8L package option
–40
o
C to +125
o
C junction temperature range
Applications
White/Blue LED driver for backlighting
-
Cell phones
-
PDAs
-
GPS systems
-
Digital cameras
-
Multimedia / MP3 players
LED flashlights
Constant current power supplies
___________________________________________________________________________________________________________
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MIC3289 | 400 W Transient Voltage Suppressor, SOD123W (SOD2 FlatPower), Reel Pack, SMD |
| MIC3289-16YD6 | 400 W Transient Voltage Suppressor, SOD123W (SOD2 FlatPower), Reel Pack, SMD |
| MIC3289-24YD6 | 400 W Transient Voltage Suppressor, SOD123W (SOD2 FlatPower), Reel Pack, SMD |
| MIC3385 | 8MHz Power System Module with LDO Standby Mode |
| MIC3385YML | 8MHz Power System Module with LDO Standby Mode |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC3289-16YML TR | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 1.2MHz 0.5A Switch WLED Driver with Digital Brightness Control (lead free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MIC3289-16YML-TR | 功能描述:LED 驅(qū)動(dòng)器 IC 1 輸出 DC DC 穩(wěn)壓器 升壓（升壓） 1.2A（開(kāi)關(guān)） 8-MLF?（2x2） 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:DC DC 穩(wěn)壓器 拓?fù)?升壓（升壓） 內(nèi)部開(kāi)關(guān):是 輸出數(shù):1 電壓 - 供電（最低）:2.5V 電壓 -?供電（最高）:6.5V 電壓 - 輸出:- 電流 - 輸出/通道:1.2A（開(kāi)關(guān)） 頻率:1.2MHz 調(diào)光:- 應(yīng)用:背光 工作溫度:-40°C ~ 125°C （TJ） 安裝類型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤(pán)，8-MLF? 供應(yīng)商器件封裝:8-MLF?（2x2） 標(biāo)準(zhǔn)包裝:1 |
| MIC3289-24YD6 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:1.2MHz PWM White LED Driver with Internal Schottky Diode and True 1-Wire Digital Control |
| MIC3289-24YD6 TR | 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 1.2MHz 0.5A Switch WLED Driver with Digital Brightness Control (lead free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MIC3289-24YD6TR | 制造商:Micrel 功能描述:1.2MHz 0.5A Sw LED Drvr, MIC3289-24YD6 |
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