Datasheet > MIC3203

MIC3203

更新时间： 2024-11-20 10:57:07

品牌	Logo	应用领域
麦瑞 - MICREL		驱动器控制器
页数	文件大小	规格书
21页	725K
描述
High-Brightness LED Driver Controller with High-Side Current Sense

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MIC3203 数据手册

MIC3203/MIC3203-1

High-Brightness LED Driver Controller

with High-Side Current Sense

General Description

Features

The MIC3203 is a hysteretic, step-down, constant-current,

High-Brightness LED (HB LED) driver. It provides an ideal

solution for interior/exterior lighting, architectural and

ambient lighting, LED bulbs, and other general illumination

applications.

• 4.5V to 42V input voltage range

• High efficiency (>90%)

• ±5% LED current accuracy

• MIC3203: Dither enabled for low EMI

• MIC3203-1: Dither disabled

• High-side current sense

• Dedicated dimming control input

• Hysteretic control (no compensation!)

• Up to 1.5MHz switching frequency

• Adjustable constant LED current

• Over-temperature protection

The MIC3203 is well suited for lighting applications

requiring a wide-input voltage range. The hysteretic control

gives good supply rejection and fast response during load

transients and PWM dimming. The high-side current

sensing and on-chip current-sense amplifier delivers LED

current with ±5% accuracy. An external high-side current-

sense resistor is used to set the output current.

The MIC3203 offers a dedicated PWM input (DIM) which

enables a wide range of pulsed dimming. A high-frequency

switching operation up to 1.5MHz allows the use of smaller

external components minimizing space and cost. The

MIC3203 offers frequency dither feature for EMI control.

• −40°C to +125°C junction temperature range

Applications

• Architectural, industrial, and ambient lighting

• LED bulbs

• Indicators and emergency lighting

• Street lighting

The MIC3203 operates over a junction temperature from

−40°C to +125°C and is available in an 8-pin SOIC

package.

A dither disabled version MIC3203-1 is also available in

the same package as the MIC3203.

• Channel letters

• 12V lighting systems (MR-16 bulbs, under-cabinet

Datasheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

lighting, garden/pathway lighting)

_________________________________________________________________________________________________________________________

Typical Application

MIC3203 Step-down LED Driver

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-032910-A

March 2010

12 3 4 5 6 7...21

中文翻译

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与MIC3203相关器件

型号	品牌	获取价格	描述	数据表
MIC3203-1YM	MICREL	获取价格	High-Brightness LED Driver Controller with High-Side Current Sense
MIC3203-1YMTR	MICREL	获取价格	LED DISPLAY DRIVER, PDSO6, GREEN, SOIC-6
MIC3203YM	MICREL	获取价格	High-Brightness LED Driver Controller with High-Side Current Sense
MIC3203YMTR	MICREL	获取价格	LED DISPLAY DRIVER, PDSO6, GREEN, SOIC-6
MIC3205	MICREL	获取价格	High-Brightness LED Driver Controller with Fixed-Frequency Hysteretic Control
MIC3205	MICROCHIP	获取价格	The MIC3205 is a hysteretic, step-down, high-brightness LED (HB LED) driver with a patent
MIC3205YML	MICREL	获取价格	High-Brightness LED Driver Controller with Fixed-Frequency Hysteretic Control
MIC3205YML-T5	MICROCHIP	获取价格	IC LED DRIVER CTRLR DIM 10MLF
MIC3205YML-TR	MICROCHIP	获取价格	LED DISPLAY DRIVER
MIC3223	MICREL	获取价格	High Power Boost LED Driver with Integrated FET

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