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参数资料
| 型号： | MIC2290YML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.5A 8MLF |
| 标准包装： | 1 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.5 V ~ 34 V |
| 输入电压： | 2.5 V ~ 10 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 500mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-VFDFN 裸露焊盘，8-MLF? |
| 包装： | 标准包装 |
| 供应商设备封装： | 8-MLF?（2x2） |
| 产品目录页面： | 1093 (CN2011-ZH PDF) |
| 其它名称： | 576-1076-6 |
MIC2290
2mm × 2mm PWM Boost Regulator
with Internal Schotty Diode
General Description
Features
The MIC2290 is a 1.2MHz, PWM, boost-switching
regulator housed in the small size 2mm × 2mm 8-pin MLF ?
package. The MIC2290 features an internal Schottky diode
that reduces circuit board area and total solution cost. High
power density is achieved with the MIC2290’s internal
34V/0.5A switch, allowing it to power large loads in a tiny
footprint.
The MIC2290 implements a constant frequency 1.2MHz
PWM control scheme. The high frequency operation saves
board space by reducing external component sizes. The
fixed frequency PWM topology also reduces switching
noise and ripple to the input power source.
The MIC2290’s wide 2.5V to 10V input voltage allows
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Internal Schottky diode
2.5V to 10V input voltage
Output voltage adjustable to 34V
Over 500mA switch current
1.2MHz PWM operation
Stable with ceramic capacitors
<1% line and load regulation
Low input and output ripple
<1μA shutdown current
UVLO
Output overvoltage protection
direct operation from 3- to 4-cell NiCad/NiMH/Alkaline
batteries, 1-and 2-cell Li-Ion batteries, as well as fixed
3.3V and 5V systems.
The MIC2290 is available in a low-profile 2mm×2mm 8-pin
MLF ? leadless package and operates from a junction
temperature range of –40°C to +125°C.
? Over temperature protection
? 2mm × 2mm 8-pin MLF ? package
? –40°C to +125°C junction temperature range
Applications
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
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Organic EL power supply
TFT LCD bias supply
12V DSL power supply
CCD bias supply
SEPIC converters
___________________________________________________________________________________________________________
Typical Application
V IN
L1
10μH
V OUT
12V
85
12V OUT Efficiency
V IN = 4.2V
MIC2290
80
2
VIN
SW
7
R1
75
V IN = 3.2V
Li Ion
Battery
C1
1μF
3
EN
OUT
FB
GND
1
6
C2
10μF
70
V IN = 3.6V
4, 8
R2
65
60
0
0.02 0.04 0.06 0.08
LOAD CURRENT (A)
0.1
Simple 12V Boost Regulator
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
M9999-101907
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| MIC2291-15BML TR | 功能描述:IC LED DRIVER PHOTO FLASH 8-MLF RoHS:否 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:1 系列:- 恒定电流:- 恒定电压:- 拓扑:PWM，切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:642kHz 电源电压:2.7 V ~ 5.5 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-VFDFN 裸露焊盘 供应商设备封装:10-VSON 包装:剪切带 (CT) 工作温度:-30°C ~ 85°C 产品目录页面:1371 (CN2011-ZH PDF) 其它名称:BD1603NUV-E2CT |
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