Datasheet > MIC2291-34YML-TR

MIC2291-34YML-TR

更新时间： 2024-11-14 14:53:35

品牌	Logo	应用领域
美国微芯 - MICROCHIP		驱动接口集成电路
页数	文件大小	规格书
10页	706K
描述
LED DISPLAY DRIVER, DSO8

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技术参数
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MIC2291-34YML-TR 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	HVSON,	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
Factory Lead Time：	10 weeks	风险等级：	5.56
接口集成电路类型：	LED DISPLAY DRIVER	JESD-30 代码：	S-XDSO-N8
JESD-609代码：	e4	长度：	2 mm
湿度敏感等级：	1	复用显示功能：	NO
功能数量：	1	区段数：	3
端子数量：	8	最高工作温度：	125 °C
最低工作温度：	-40 °C	封装主体材料：	UNSPECIFIED
封装代码：	HVSON	封装形状：	SQUARE
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	0.95 mm
最大供电电压：	10 V	最小供电电压：	2.5 V
标称供电电压：	3.6 V	表面贴装：	YES
温度等级：	AUTOMOTIVE	端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
宽度：	2 mm	Base Number Matches：	1

MIC2291-34YML-TR 数据手册

MIC2291

1.2A PWM Boost Regulator Photo Flash

LED Driver

General Description

Features

The MIC2291 is a 1.2MHz Pulse Width Modulation (PWM),

boost-switching regulator that is optimized for high-current,

white LED photo ﬂash applications. With a guaranteed

switch current of 1.2A, the MIC2291 easily drives a string

of 3 white LEDs in series at 100mA, ensuring a high level

of brightness and eliminating several ballast resistors.

• 2.5V to 10V input voltage

• Output voltage up to 34V

• 1.2A switch current

• 1.2MHz PWM operation

• 95mV feedback voltage

• Overvoltage protection (OVP)

The MIC2291 implements a constant frequency, 1.2MHz

PWM control scheme. The high frequency PWM operation

saves board space by reducing external component sizes.

The added beneﬁt of the constant frequency PWM

scheme, in contrast to variable frequency topologies, is

much lower noise and input ripple injected back to the

battery source.

–

Options for 15V and 34V

• Stable with ceramic capacitors

• <1% line and load regulation

• 1µA shutdown current

• Over temperature protection

• UVLO

• Low-proﬁle Thin SOT23-5 package option

• 2mm × 2mm MLF^®package option

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

To optimize efficiency, 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 MIC2291 is available with 2 levels of over-voltage

protection, 15V, and 34V. This allows designers to choose

the smallest possible external components with the

appropriate voltage ratings for their applications.

Applications

• Photo Flash LED driver

• Cell phones

• PDAs

• GPS systems

• Digital cameras

• IP phones

The MIC2291 is available in low-proﬁle, Thin SOT23 5-pin

and 8-pin 2mm × 2mm MLF^®package options. The

MIC2291 has a junction temperature range of –40°C to

+125°C.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

• LED ﬂashlights

Typical Application

10µH

100mA

MIC2291-15xML

MIC2291xD5

VIN

1-Cell

Li Ion

1-Cell

Li Ion

3V to 4.2V

1µF

0.22µF

ceramic

OVP

0.22µF

3V to 4.2V

95mV

GND

Thin SOT23 Flash LED Driver

2mm x 2mm Flash LED Driver with Output OVP

PowerPAK is a trademark of Siliconix, Inc.

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

M9999-051507

May 2007

12 3 4 5 6 7...10

中文翻译

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与MIC2291-34YML-TR相关器件

型号	品牌	获取价格	描述	数据表
MIC2291BD5	MICREL	获取价格	1.2A PWM Boost Regulator Photo Flash LED Driver
MIC2291BD5TX	MICROCHIP	获取价格	IC,LASER DIODE/LED DRIVER,TSOP,5PIN,PLASTIC
MIC2291YD5	MICREL	获取价格	1.2A PWM Boost Regulator Photo Flash LED Driver
MIC2291YD5TR	MICREL	获取价格	LED DISPLAY DRIVER, PDSO5, LEAD FREE, TSOT-23, 5 PIN
MIC2292	MICREL	获取价格	High Frequency PWM White LED Drivers with Internal Schottky Diode and OVP
MIC2292	MICROCHIP	获取价格	The MIC2292 and MIC2293 are high frequency, pulse-width modulator (PWM) boost regulators o
MIC2292_05	MICREL	获取价格	High Frequency PWM White LED Drivers with Internal Schottky Diode and OVP
MIC2292_11	MICREL	获取价格	High Frequency PWM White LED Drivers with Internal Schottky Diode and OVP
MIC229215BML	MICROCHIP	获取价格	LED Driver, 1-Segment, PDSO8, 2 X 2 MM, MLF-8
MIC2292-15BML	MICREL	获取价格	High Frequency PWM White LED Drivers with Internal Schottky Diode and OVP

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