参数资料
型号: MCP1603-250I/MC
厂商: Microchip Technology
文件页数: 16/26页
文件大小: 0K
描述: IC REG BUCK SYNC 2.5V 0.5A 8DFN
标准包装: 150
类型: 降压(降压)
输出类型: 固定
输出数: 1
输出电压: 2.5V
输入电压: 2.7 V ~ 5.5 V
PWM 型: 电流模式
频率 - 开关: 2MHz
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-VFDFN 裸露焊盘
包装: 管件
供应商设备封装: 8-DFN(3x2)
配用: MCP1603RD-TNY-ND - REFERENCE DESIGN FOR MCP1603
MCP1603EV-ND - BOARD EVAL BUCK CONV MCP1603
MCP1603
5.8 PCB Layout Information
Good printed circuit board layout techniques are
important to any switching circuitry and switching
power supplies are no different. When wiring the high
current paths, short and wide traces should be used.
This high current path is shown with red connections in
Figure 5-1 . The current in this path is switching.
Therefore, it is important that the components along the
high current path should be placed as close as possible
to the MCP1603 to minimize the loop area.
The feedback resistors and feedback signal should be
routed away from the switching node and this switching
current loop. When possible ground planes and traces
should be used to help shield the feedback signal and
minimize noise and magnetic interference.
V IN
2.7V To 4.5V
C IN
4.7 μF
V IN
L X
SHDN V FB
GND
L 1
4.7 μH
V OUT
1.8V @ 500 mA
C OUT
4.7 μF
FIGURE 5-1:
DS22042A-page 16
PCB High Current Path.
? 2007 Microchip Technology Inc.
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