参数资料
| 型号： | SP6654EU-L |
| 厂商： | Exar Corporation |
| 文件页数： | 14/17页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.8A 10MSOP |
| 标准包装： | 50 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1 V ~ 5.5 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 电流 - 输出： | 800mA |
| 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： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 10-MSOP |
APPLICATION INFORMATION
the other active components on the board, some
rules should be followed. Refer to the typical
application schematic on page 1 and the sample
PCB layout shown in the following figures to
illustrate how to layout a SP6654 power supply.
Avoid injecting noise into the sensitive part of
circuit via the ground plane. Input and output
capacitors conduct high frequency current through
the ground plane. Separate the control and power
grounds and connect them together at a single
point. Power ground plane is shown in the figure
titled PCB top sample layout and connects the
ground of the C OUT capacitor to the ground of the
C IN capacitor and then to the PGND pin 10. The
control ground plane connects from pin 9 GND to
ground of the C VIN capacitor and the R I ground
return of the feedback resistor. These two separate
control and power ground planes come together in
the figure titled PCB top sample layout where
SP6654 pin 9 GND is connected to pin 10 PGND.
SP6654EB
PWRGD
Figure 19. SP6654 PCB Component Sample Layout
Figure 21. SP6654 PCB Bottom Sample Layout
Power loops on the input and output of the con-
verter should be laid out with the shortest and
widest traces possible. The longer and narrower
the trace, the higher the resistance and inductance
it will have. The length of traces in series with the
capacitors increases its ESR and ESL and reduces
their effectiveness at high frequencies. Therefore,
put the 1 μ F bypass capacitor as close to the V IN and
GND pins of the converter as possible, the 22 μ F
C IN close to the P VIN pin and the 22 μ F output
capacitor as close to the inductor as possible. The
external voltage feedback network R F , R I and
feedforward capacitor C F should be placed very
close to the FB pin. Any noise traces like the LX
pin should be kept away from the voltage feedback
network and separated from it by using power
ground copper to minimize EMI.
Figure 20. SP6654 PCB Top Sample Layout
Date: 2/1/05
SP6654 High Efficiency 800mA Synchronous Buck Regulator
14
? Copyright 2005 Sipex Corporation
相关PDF资料 |
PDF描述 |
|---|---|
| SP6655ER-L/TR | IC REG BUCK SYNC ADJ 0.4A 10DFN |
| SP6656ER3-L/TR | IC REG BUCK SYNC ADJ 0.4A 10DFN |
| SP6660EP-L | IC REG SWITCHD CAP DBL INV 8PDIP |
| SP6661EU-L/TR | IC REG SWITCHD CAP DBL INV 8MSOP |
| SP6669DEK-L/TRR3 | IC REG BUCK SYNC 1.8V SOT23-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SP6654EU-L/TR | 功能描述:DC/DC 开关控制器 High Eff 800mA Synchronous RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| SP6655 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Efficiency 400mA Synchronous Buck Regulator Ideal for portable designs powered with Li Ion battery |
| SP6655EB | 功能描述:电源管理IC开发工具 Eval Board for SP6655 Series RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| SP6655ER | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SP6655ER/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Efficiency 400mA Synchronous Buck Regulator Ideal for portable designs powered with Li Ion battery |
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