Datasheet > MIC2298_11

MIC2298_11

更新时间： 2024-11-14 10:57:19

品牌	Logo	应用领域
麦瑞 - MICREL		驱动器
页数	文件大小	规格书
13页	423K
描述
3.5A Minimum, 1MHz Boost High Brightness White LED Driver

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MIC2298_11 数据手册

MIC2298

3.5A Minimum, 1MHz Boost High

Brightness White LED Driver

General Description

Features

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.

• 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

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.

• Over temperature protection

• Externally programmable soft-start

• Under-voltage lockout (UVLO)

• –40^°C to +125^°C junction temperature range

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.

Applications

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

• Cell phones

• PDAs

• Digital cameras

• White LED flashlights

___________________________________________________________________________________________________________

Typical Application

Figure 1. High Power White LED Driver

MLF and MicroLeadFrame 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

M9999-101707-B

October 2007

12 3 4 5 6 7...13

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与MIC2298_11相关器件

型号	品牌	获取价格	描述	数据表
MIC229815YML	MICROCHIP	获取价格	LED DISPLAY DRIVER, DSO12
MIC2298-15YML	MICREL	获取价格	3.5A Minimum, 1MHz Boost High Brightness White LED Driver
MIC2298-15YMLTR	MICREL	获取价格	LED DISPLAY DRIVER, QCC12, 3 X 3 MM, GREEN, MLF-12
MIC2299	MICREL	获取价格	3.5A Minimum, 2MHz High Brightness LED Driver
MIC2299	MICROCHIP	获取价格	The MIC2299 is a high power boost-switching regulator that is optimized for constant-curre
MIC2299_11	MICREL	获取价格	3.5A Minimum, 2MHz High Brightness LED Driver
MIC2299-15YML	MICREL	获取价格	3.5A Minimum, 2MHz High Brightness LED Driver
MIC2299-15YML-TR	MICROCHIP	获取价格	LED DISPLAY DRIVER, QCC12
MIC23030	MICREL	获取价格	8MHz PWM 400mA Buck Regulator with HyperLight Load
MIC23030	MICROCHIP	获取价格	The MIC23030 is a high efficiency 8MHz 400mA synchronous buck regulator with HyperLight

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