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参数资料
| 型号： | MIC2145YMM |
| 厂商： | Micrel Inc |
| 文件页数： | 11/15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： | 无 |
| 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
Diode
A Schottky diode should be used for the output diode. Most
of the application circuits on this data sheet specify the
Motorola MBR0530 surface mount Schottky diode. It has a
forward current of 0.5A and a low forward voltage drop. For
applications that are cost driven, the 1N4148 or equivalent
can be used but the efficiency will suffer due to higher forward
voltage drop.
Output Capacitor
Low ESR capacitors should be used at the output of the
MIC2145 to minimize the switching output ripple voltage.
Selection of the capacitor value will depend upon the peak
inductor current, inductor size, and the load. MuRata offers
the GRM43-2 series with up to 10 μ F at 25V, with a X5R
temperature coefficient in a 1812 surface-mount package.
For lower output voltage applications, the GRM42-2 (1210
package/10 μ F/16V) and GRM42-6 (1206 package/10 μ F/
6.3V) series can be used. Typically, values ranging from
10 μ F to 47 μ F can be used for the output capacitor.
Micrel, Inc.
Reducing Peak Current
If lower than 400mA peak current is required then the soft
start pin may be shorted to ground. This changes the refer-
ence of the current limit comparator. With the soft start pin
shorted to ground, the maximum current will approximately
reduce to half. The peak current should always be set at least
50% higher than the maximum load current.
April 2005
11
M9999-042205
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相关代理商/技术参数 |
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|---|---|
| MIC2145YMM TR | 功能描述:直流/直流开关调节器 MSOP-8 Boost Regulator (Lead Free) RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MIC2145YMMTR | 制造商:Micrel 功能描述:DC-DC Converter Single Boost 2.4V to 16V |
| MIC2145YMM-TR | 功能描述:Boost, Flyback, SEPIC Switching Regulator IC Positive Adjustable 2.4V 1 Output 500mA 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:有效 功能:升压，升压/降压 输出配置:正 拓扑:升压，反激式，SEPIC 输出类型:可调式 输出数:1 电压 - 输入（最小值）:2.4V 电压 - 输入（最大值）:16V 电压 - 输出（最小值/固定）:2.4V 电压 - 输出（最大值）:16V 电流 - 输出:500mA 频率 - 开关:450kHz 同步整流器:无 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商器件封装:8-MSOP 标准包装:1 |
| MIC2150 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:2-Phase Dual Output PWM Synchronous Buck Control IC |
| MIC2150AFLMGNHWS | 制造商:Vishay Dale 功能描述:THIN FILM RESISTOR,215 OHM,1%,200PPM - Waffle Pack |
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