参数资料
型号: MIC2145YMM
厂商: Micrel Inc
文件页数: 10/15页
文件大小: 0K
描述: IC REG BST FLYBK SEPIC ADJ 8MSOP
标准包装: 100
类型: 升压(升压),回扫,Sepic
输出类型: 可调式
输出数: 1
输出电压: 3 V ~ 16 V
输入电压: 2.4 V ~ 16 V
频率 - 开关: 450kHz
电流 - 输出: 500mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
包装: 管件
供应商设备封装: 8-MSOP
MIC2145
Inductor
The MIC2145 has a programmable peak current to allow the
usage of small surface mount inductors. A 10 μ H or 4.7 μ H
inductor is recommended for most portable applications such
as powering white LEDs and biasing LCD panels. The
Micrel, Inc.
inductor should have a saturation current rating higher than
the peak current during circuit operation. A low ESR (Equiva-
lent Series Resistance) inductor is also desirable for high
efficiency. Below are tables that list the maximum output
current at minimum input voltage with efficiencies greater
than 80%.
V I N ( m i n )
( V )
V I N ( m a x )
( V )
R S E T
( ? )
I O U T ( m a x )
( m A )
V O U T
( V )
V I N ( m i n )
( V )
V I N ( m a x )
( V )
R S E T
( ? )
I O U T ( m a x )
( m A )
V O U T
( V )
4 . 5
8 0
5
4 . 5
1 6 0
5
2 . 4
9 . 5
1 0 k
2 5
1 0
2 . 4
9 . 5
1 0 k
1 0 0
1 0
1 1 . 5
1 4 . 5
4 . 5
2 0
1 5
1 5 0
1 2
1 5
5
1 1 . 5
1 4 . 5
4 . 5
9 0
7 0
2 5 0
1 2
1 5
5
3 . 0
9 . 5
1 1 . 5
1 0 k
5 0
4 0
1 0
1 2
3 . 0
9 . 5
1 1 . 5
1 0 k
1 5 0
1 2 0
1 0
1 2
1 4 . 5
4 . 5
3 0
2 5 0
1 5
5
1 4 . 5
4 . 5
1 0 0
3 5 0
1 5
5
3 . 6
9 . 5
1 1 . 5
1 0 k
7 0
5 0
1 0
1 2
3 . 6
9 . 5
1 1 . 5
1 0 k
1 7 0
1 5 0
1 0
1 2
1 4 . 5
9 . 5
4 0
1 9 0
1 5
1 0
1 4 . 5
9 . 5
1 2 0
3 0 0
1 5
1 0
5 . 0
1 1 . 5
1 0 k
1 3 0
1 2
5 . 0
1 1 . 5
1 0 k
2 5 0
1 2
1 4 . 5
9 0
1 5
1 4 . 5
2 0 0
1 5
Table 1. Typical Application for 10 μ H Inductor in
Basic Configuration
Table 2. Typical Application for 10 μ H Inductor in
Bootstrap Configuration
V I N ( m i n )
( V )
V I N ( m a x )
( V )
R S E T
( ? )
I O U T ( m a x )
( m A )
V O U T
( V )
V I N ( m i n )
( V )
V I N ( m a x )
( V )
R S E T
( ? )
I O U T ( m a x )
( m A )
V O U T
( V )
3 . 0
4 . 5
9 . 5
9 . 5
9 . 5
4 0 0
2 5 0
8 0
6 0
5 0
5
1 0
1 2
1 5
3 . 0
4 . 5
4 . 5
4 . 5
4 . 5
2 0 0
5 0 0
2 2 5
1 5 0
1 3 0
5
1 0
1 2
1 5
Table 3. Typical Application for 4.7 μ H Inductor in
Basic Configuration
Table 4. Typical Application for 4.7 μ H Inductor in
Bootstrap Configuration
M9999-042205
10
April 2005
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