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参数资料
| 型号： | MIC2288YML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 1A 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： | 1.24 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： | 1A |
| 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： | 1082 (CN2011-ZH PDF) |
| 其它名称： | 576-1075-6 |
MIC2288
General Description
Micrel, Inc.
MIC2288
1A 1 .2MHz PWM Boost Converter in
Thin SOT-23 and 2 × 2 MLF?
Features
The MIC2288 is a 1.2MHz PWM, DC/DC boost switching
regulator available in low-profile Thin SOT-23 and
2mm × 2mm MLF? package options. High power density is
achieved with the MIC2288’s internal 34V/1A switch, allow-
ing it to power large loads in a tiny footprint.
The MIC2288 implements a constant frequency, 1.2MHz
PWM, current mode control scheme with internal compensa-
tion that offers excellent transient response and output regu-
lation performance. The high frequency operation saves
board space by allowing small, low-profile, external compo-
nents. The fixed frequency PWM topology also reduces
spurious switching noise and ripple to the input power source.
The MIC2288 is available in a low-profile Thin SOT-23-5
package and a 2mm × 2mm MLF?-8 leadless package. The
2mm × 2mm MLF?-8 package option has an output over-
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2.5V to 10V input voltage range
Output voltage adjustable to 34V
Over 1A switch current
1.2MHz PWM operation
Stable with ceramic capacitors
High-efficiency
<1% line and load regulation
Low input and output ripple
<1 μ A shutdown current
UVLO
Output overvoltage protection (MIC2288BML)
Over temperature shutdown
Thin SOT-23-5 package option
2mm × 2mm leadless MLF?-8 package option
–40 ° C to +125 ° C junction temperature range
voltage protection feature.
The MIC2288 has a junction temperature range of –40 ° C to
Applications
+125 ° C.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Typical Application
?
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?
?
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Organic EL power supply
TFT-LCD bias supply
12V supply for DSL applications
Multi-output DC/DC converters
Positive and negative output regulators
SEPIC converters
V IN
L1
10 μ H
MIC2288BD5
V OUT
15V
90
85
15V OUT Efficiency
V IN = 4.2V
5
VIN
SW
1
R1
80
1-Cell
Li Ion
C1
2.2 μ F
4
EN
GND
FB
3
R2
C2
10 μ F
75
70
V IN = 3.2V
V IN = 3.6V
2
65
60
0
0.05
0.1
0.15
0.2
LOAD (A)
2mm × 2mm MLF? Boost Regulator
MLF and Micro LeadFrame are 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
April 2005
1
M9999-042205
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