参数资料
型号: SC198AMLTRT
厂商: Semtech
文件页数: 13/15页
文件大小: 0K
描述: IC REG BUCK SYNC PROG .8A 20MLPQ
标准包装: 1
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 可编程
输入电压: 2.7 V ~ 5.5 V
频率 - 开关: 1MHz
电流 - 输出: 800mA
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: 20-MLPQ
包装: 标准包装
供应商设备封装: 20-MLPQ(4x4)
其它名称: SC198AMLDKR
NOT RECOMMENDED FOR NEW DESIGN
Applications Information (continued)
PCB Layout Considerations
Poor layout can degrade the performance of the DC-DC
converter and can be a contributory factor in EMI prob-
lems, ground bounce, thermal issues, and resistive voltage
losses. Poor regulation and instability can result.
The following design rules are recommended:
1. Place the inductor and filter capacitors as close to the
device as possible and use short wide traces between
the power components.
2. Route the output voltage feedback path away from
inductor and LX node to minimize noise and magnetic
interference.
3. Use a ground plane to further reduce noise interference
on sensitive circuit nodes.
VIN
SC198A
GND
LXA
Cin A
Cin B
LXB
GND
VOUTA
GND
GND
VOUTB
13
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