- 您现在的位置：买卖IC网 > Datasheet目录342 > MIC2287-34YML TR (Micrel Inc)IC LED DRIVER WHITE BCKLGT 8-MLF Datasheet资料下载
参数资料
| 型号： | MIC2287-34YML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER WHITE BCKLGT 8-MLF |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，闪灯/白光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1.05MHz ~ 1.35MHz |
| 电源电压： | 2.5 V ~ 10 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-VFDFN 裸露焊盘，8-MLF? |
| 供应商设备封装： | 8-MLF?（2x2） |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 125°C |
| 产品目录页面： | 1082 (CN2011-ZH PDF) |
| 其它名称： | 576-1726-6 |
MIC2287
General Description
The MIC2287 is a 1.2MHz pulse width modulated (PWM),
boost-switching regulator that is optimized for constant-
current, white LED driver applications. With a maximum
output voltage of 34V and a switch current of over 500mA,
the MIC2287 easily drives a string of up to 8 white LEDs in
series, ensuring uniform brightness and eliminating several
ballast resistors.
The MIC2287 implements a constant frequency, 1.2MHz
PWM control scheme. The high frequency PWM operation
saves board space by reducing external component sizes.
The added bene?t of the constant frequency PWM scheme
as opposed to variable frequency topologies is much lower
noise and input ripple injected back to the battery source.
To optimize ef?ciency, the feedback voltage is set to only
95mV. This reduces the power dissipation in the current set
resistor and allows the lowest total output voltage, hence
minimal current draw from the battery.
The MIC2287 is available with 3 levels of overvoltage protec-
tion, 15V, 24V, and 34V. This allows designers to choose the
smallest possible external components with the appropriate
voltage ratings for their applications.
The MIC2287 is available in low pro?le Thin SOT-23 5-lead and
an 8-lead 2mm × 2mm MLF? package options. The MIC2287
has a junction temperature range of –40°C to +125°C.
All support documentation can be found on Micrel’s web site
at www.micrel.com.
Micrel, Inc.
MIC2287
1 .2MHz PWM White LED Driver with OVP in
2mm × 2mm MLF? and Thin SOT-23
Features
? 2.5V to 10V input voltage
? Output voltage up to 34V
? Over 500mA switch current
? 1.2 MHz PWM operation
? 95mV feedback voltage
? Output Overvoltage Protection (OVP)
? Options for 15V, 24V, and 34V OVP
? <1% line and load regulation
? <1μA shutdown current
? Over-temperature protection
? UVLO
? Low pro?le Thin SOT-23-5 package option
? 8-lead 2mm × 2mm MLF? package option
? –40°C to +125°C junction temperature range
Applications
? White LED driver for backlighting:
- Cell phones
- PDAs
- GPS systems
- Digital cameras
- MP3 players
- IP phones
? Photo ?ash LED driver
? LED ?ashlights
? Constant current power supplies
Typical Application
10μH
CMDSH-3
10μH
CMDSH-3
1-Cell
Li Ion
1μF
5
4
MIC2287BD5
VIN SW
EN FB
GND
2
1
3
95mV
6.3?
0.22μF
1-Cell
Li Ion
1μF
MIC2287-34BML
VIN SW
EN OVP
FB
GND
95mV
6.3?
0.22μF
3-Series White LED Driver in Thin SOT-23
6-Series White LED Driver
with Output OVP in 2mm × 2mm MLF?-8
MLF and Micro LeadFrame are trademarks of Amkor Technology, Inc.
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
July 2005
1
M9999-070105
相关PDF资料 |
PDF描述 |
|---|---|
| MIC2289C-34YD6 TR | IC LED DRIVR WHITE BCKLGT TSOT-6 |
| MIC2291YD5 TR | IC LED DRIVER PHOTO FLASH TSOT-5 |
| MIC2293-15YML TR | IC LED DRIVER WHITE BCKLGT 8-MLF |
| MIC2293C-34YML TR | IC LED DRIVER WHITE BCKLGT 8-MLF |
| MIC2297-42YML TR | IC LED DRIVR WHITE BCKLGT 10-MLF |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2287-3-LED-EV | 功能描述:MIC2287 1, Non-Isolated Output LED Driver Evaluation Board 制造商:microchip technology 系列:- 零件状态:无货 电流 - 输出/通道:- 输出和类型:1，非隔离 电压 - 输出:- 特性:- 电压 - 输入:2.5 V ~ 10 V 所含物品:板 使用的 IC/零件:MIC2287 标准包装:1 |
| MIC2287-6-LED-EV | 功能描述:MIC2287 1, Non-Isolated Output LED Driver Evaluation Board 制造商:microchip technology 系列:- 零件状态:无货 电流 - 输出/通道:- 输出和类型:1，非隔离 电压 - 输出:- 特性:- 电压 - 输入:2.5 V ~ 10 V 所含物品:板 使用的 IC/零件:MIC2287 标准包装:1 |
| MIC2287BD5 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:1.2MHz PWM White LED Driver with OVP in 2mm 】 2mm MLF⑩ and Thin SOT-23 |
| MIC2287BD5 TR | 功能描述:IC LED DRVR WHT BCKLGT TSOT23-5 RoHS:否 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:1 系列:- 恒定电流:- 恒定电压:- 拓扑:PWM，切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:642kHz 电源电压:2.7 V ~ 5.5 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-VFDFN 裸露焊盘 供应商设备封装:10-VSON 包装:剪切带 (CT) 工作温度:-30°C ~ 85°C 产品目录页面:1371 (CN2011-ZH PDF) 其它名称:BD1603NUV-E2CT |
| MIC2287C | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:1.2MHz PWM White LED Driver with OVP in 2mm × 2mm MLF and Thin SOT-23 |
发布紧急采购，3分钟左右您将得到回复。