Datasheet > MIC2293

MIC2293

更新时间： 2024-11-15 14:55:55

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
10页	430K
描述
The MIC2292 and MIC2293 are high frequency, pulse-width modulator (PWM) boost regulators optimized

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MIC2293 数据手册

MIC2292/93

Micrel, Inc.

MIC2292/93

High Frequency PWM White LED Drivers with

Internal Schottky Diode and OVP

General Description

Features

The MIC2292 and MIC2293 are high frequency, Pulse Width

Modulator (PWM) boost regulators optimized for constant-

current, white LED driver applications. Because of their

constant PWM switching frequencies of 1.6MHz and 2MHz,

respectively, the MIC2292/93 can use the smallest external

components, allowing designers to avoid sensitive IF bands

in their RF applications.

• 2.5V to 10V input voltage

• Output voltage up to 34V

• Internal Schottky diode

• 1.6MHz PWM operation (MIC2292)

• 2.0MHz PWM operation (MIC2293)

• Stable with ceramic capacitors

• 15V and 34V output overvoltage protection options

• 500mA switch current rating

• 95mV feedback voltage

The products feature an internal Schottky diode and two

levels of output overvoltage protection allowing a small size

and efﬁcient DC/DC solution that requires only four external

components.

• <1% line and load regulation

• <1µA shutdown current

• Over-temperature protection

• UVLO

• 8-lead (2mm × 2mm) MLF package

The 2.5V to 10V input voltage range of MIC2292/3

allows direct operation from 1- and 2-cell Li Ion as well as

3- to 4-cell NiCad/NiMH/Alkaline batteries. The MIC2292/3

products are available in a small size 2mm × 2mm 8-lead

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

MLF package and have a junction temperature range of

–40°C to +125°C.

Applications

• White LED driver for backlighting

– Cell phones

All support documentation can be found on Micrel’s web site

at www: micrel.com.

– PDAs

– GPS systems

– Digital cameras

– MP3 players

– IP phones

• Constant current power supplies

Typical Application

15µH

10µH

MIC2292-15YML

MIC2293-15YML

VIN

1µF

0.22µF

16V

0.22µF

16V

Li Ion

OUT

GND

OUT

GND

95mV

6.3Ω

95mV

6.3Ω

1.6MHz PWM White LED Driver with 15V OVP

2MHz PWM White LED Driver with 15V OVP

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

July 2009

M9999-070809

12 3 4 5 6 7...10

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与MIC2293相关器件

型号	品牌	获取价格	描述	数据表
MIC229315BML	MICROCHIP	获取价格	LED Driver, 1-Segment, PDSO8, 2 X 2 MM, MLF-8
MIC2293-15BML	MICREL	获取价格	High Frequency PWM White LED Drivers with Internal Schottky Diode and OVP
MIC2293-15BMLTR	MICROCHIP	获取价格	LED Driver, 1-Segment, PDSO8, 2 X 2 MM, MLF-8
MIC2293-15YML	MICREL	获取价格	High Frequency PWM White LED Drivers with Internal Schottky Diode and OVP
MIC2293-15YML	MICROCHIP	获取价格	LED DISPLAY DRIVER, PDSO8, 2 X 2 MM, LEAD FREE, MLF-8
MIC2293-15YMLTR	MICROCHIP	获取价格	LED DISPLAY DRIVER, PDSO8, 2 X 2 MM, LEAD FREE, MLF-8
MIC2293-15YML-TR	MICROCHIP	获取价格	LED DISPLAY DRIVER, PDSO8
MIC229334BML	MICROCHIP	获取价格	LED Driver, 1-Segment, PDSO8, 2 X 2 MM, MLF-8
MIC2293-34BML	MICREL	获取价格	High Frequency PWM White LED Drivers with Internal Schottky Diode and OVP
MIC2293-34BMLTR	MICROCHIP	获取价格	LED Driver, 1-Segment, PDSO8, 2 X 2 MM, MLF-8

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