MIC2298
3.5A Minimum, 1MHz Boost High
Brightness White LED Driver
General Description
The MIC2298 is a high power boost-switching regulator
that is optimized for constant-current control. The MIC2298
is capable of driving up to 2 series 1A white LED for
photoflash, flashlight and other applications. The feedback
voltage is only 200mV, minimizing ballast power dissipa-
tion in constant-current control applications for improved
operating efficiency.
The MIC2298 has a brightness pin that allows for a
programmable torch mode as well full flash with a single
pin when driving high current LEDs.
The MIC2298 implements a constant frequency 1MHz
PWM control scheme to make the smallest possible
design.
The 2.5V to 10V input voltage range of MIC2298 allows
direct operation from 1- and 2-cell Li Ion as well as 3- to 6-
cell NiCad/NiMH/Alkaline battery sources. Maximum
battery life is assured with a low 1μA shutdown current.
The MIC2298 is available in a low profile 12-pin 3x3 MLF ?
package.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
? 3.5A minimum switch current delivers at least 7W of
output power over-temperature
? 200mV ± 10% feedback voltage
? 2.5V to 10V input voltage
? Output voltage up to 30V (max)
? 12-pin 3mm x 3mm leadless MLF ? package
? Available output over-voltage protection (OVP)
? 1MHz operation
? Programmable output current
? <1% line regulation
? 1μA shutdown current
? Over temperature protection
? Externally programmable soft-start
? Under-voltage lockout (UVLO)
? –40 ° C to +125 ° C junction temperature range
Applications
? Cell phones
?
?
?
PDAs
Digital cameras
White LED flashlights
___________________________________________________________________________________________________________
Typical Application
Figure 1. High Power White LED Driver
MLF and Micro LeadFrame are registered 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
October 2007
M9999-101707-B
相关PDF资料
MIC2299-15YML TR IC LED DRIVR WHITE BCKLGT 12-MLF
MIC26603YJL EV BOARD EVAL FOR MIC26603YJL
MIC26901YJL EV BOARD EVAL FOR MIC26901YJL
MIC2841AYMT TR IC LED DRIVR WHITE BCKLGT 10TMLF
MIC2842AYMT TR IC LED DRIVR WHITE BCKLGT 10TMLF
MIC2843YMT TR IC LED DRIVER PWM CONTROL 10TMLF
MIC2844AYMT TR IC LED DRIVR WHITE BCKLGT 10TMLF
MIC2845A-MFYMT TR IC LED DRIVR WHITE BCKLGT 14TMLF
相关代理商/技术参数
MIC2298-15YMLTR 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述:
MIC2298-15YML-TR 功能描述:LED 驱动器 IC 1 输出 DC DC 稳压器 升压(升压) 模拟 调光 3.5A(开关) 12-MLF?(4x4) 制造商:microchip technology 系列:- 包装:剪切带(CT) 零件状态:有效 类型:DC DC 稳压器 拓扑:升压(升压) 内部开关:是 输出数:1 电压 - 供电(最低):2.5V 电压 -?供电(最高):10V 电压 - 输出:15V 电流 - 输出/通道:3.5A(开关) 频率:1MHz 调光:模拟 应用:照相机闪光灯 工作温度:-40°C ~ 125°C (TJ) 安装类型:表面贴装 封装/外壳:12-VFDFN 裸焊盘,12-MLF? 供应商器件封装:12-MLF?(4x4) 标准包装:1
MIC2299 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:3.5A Minimum, 2MHz High Brightness LED Driver
MIC2299_11 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:3.5A Minimum, 2MHz High Brightness LED Driver
MIC2299-15YML 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:3.5A Minimum, 2MHz High Brightness LED Driver
MIC2299-15YML TR 功能描述:直流/直流开关调节器 2.5V 2MHz Boost LED Driver with 3.5A Switch RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MIC2299-15YMLTR 制造商:Micrel 功能描述:7W 2MHz White LED Driver, MIC2299-15YML
MIC2299-15YML-TR 功能描述:LED 驱动器 IC 1 输出 DC DC 稳压器 升压(升压) 模拟 调光 3.5A(开关) 12-MLF?(4x4) 制造商:microchip technology 系列:- 包装:剪切带(CT) 零件状态:停产 类型:DC DC 稳压器 拓扑:升压(升压) 内部开关:是 输出数:1 电压 - 供电(最低):2.5V 电压 -?供电(最高):10V 电压 - 输出:30V 电流 - 输出/通道:3.5A(开关) 频率:2MHz 调光:模拟 应用:背光 工作温度:-40°C ~ 125°C (TJ) 安装类型:表面贴装 封装/外壳:12-VFDFN 裸焊盘,12-MLF? 供应商器件封装:12-MLF?(4x4) 标准包装:1