参数资料
| 型号： | SC121ULTRT |
| 厂商： | Semtech |
| 文件页数： | 20/23页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC 3.3V/ADJ 6MLPD |
| 标准包装： | 1 |
| 类型： | 升压（升压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 3.3V，1.8 V ~ 5 V |
| 输入电压： | 0.7 V ~ 4.5 V |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 500mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-MLPD-UT |
| 包装： | 标准包装 |
| 供应商设备封装： | 6-MLPD-UT（1.5x2.0） |
| 其它名称： | SC121ULTRTDKR |
SC121
Applications Information (continued)
PCB Layout Considerations
Poor layout can degrade the performance of the DC-DC
converter and can contribute to EMI problems, ground
bounce, and resistive voltage losses. Poor regulation and
instability can result.
The following simple design rules can be implemented to
ensure good layout:
?
?
Maximize ground metal on the component side
to improve the return connection and thermal
dissipation. Separation between the LX node
and GND should be maintained to avoid cou-
pling capacitance between the LX node and the
ground plane.
Use a ground plane with several vias connecting
to the component side ground to further reduce
?
?
Place the inductor and filter capacitors as close
to the device as possible and use short wide
traces between the power components.
Route the output voltage feedback path away
from the inductor and LX node to minimize
noise and magnetic interference.
7.0mm
noise interference on sensitive circuit nodes.
A suggested layout is shown in Figure 4.
C OUT
V OUT
LX
OUT
C FB
R 1
L X
GND
IN
SC121
FB
EN
(2 nd layer)
5.2mm
R 2
C IN
GND
V IN
Figure 4 — Layout Drawing
20
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| SC122 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Low Voltage Synchronous Boost Converter |
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| SC122ULTRT | 功能描述:IC REG BST SYNC 3.3V 95MA 6MLPD RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
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