参数资料
| 型号： | SP6656ER3-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 13/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.4A 10DFN |
| 标准包装： | 3,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1 V ~ 5 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 电流 - 输出： | 400mA |
| 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-VFDFN |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-DFN（2.5x2.4） |
APPLICATION INFORMATION
The output voltage is programmed by the external divider, as shown in the typical
application circuit on Page 1. Depending on the topology used, 1 or 2 voltages ,V OUT
is set as follows:
1) Single V OUT
First pick a value for RI that is no larger than
300K ? . Too large a value of RI will reduce the
AC voltage seen by the loop comparator since
the internal FB pin capacitance can form a low
pass filter with RF in parallel with RI. The
formula for RF with a given RI and output
voltage is:
R F = (V OUT / 0.8V - 1) * (R I )
2) Dual V OUT (selectable)
First pick the lowest voltage that will be used
and utilize the same method as above.
R F = (V OUT_LOW / 0.8V - 1) * (R I ) R I ≤ 300k ?
Then use the following equation to determine
R S:
V OUT
FB
V OUT
FB
R F
R I
R F
VO
CF
22pF
VO
CF
22pF
R S
OVSO
[R I //R S ] =
0.8 * R F .
V OUT_HIGH - 0.8
R I
}
{
R S =
[R I //R S ]
[R I //R S ]
1-
R I
.
Date: 3/6/06
SP6656, 400mA Synchronous Buck Regulator with Dynamically Adjustable Voltage Output
13
? Copyright 2006 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP6656ER3TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Efficiency 400mA Synchronous Buck Regulator with Dynamically Adjustable Voltage Output |
| SP6656ER-L | 制造商:Exar Corporation 功能描述:BUCK REG 400MA 6656 DFN-10 6V |
| SP6659 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:1.5MHz, 600mA Synchronous Buck Regulator |
| SP6659_06 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:1.5MHz, 600mA Synchronous Buck Regulator |
| SP6659EB | 功能描述:电源管理IC开发工具 1.5MHz 600mA Sync Buck Regulator 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 |
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