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參數資料
| 型號： | MP2108 |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | 2A, 6V, 740KHz Synchronous Buck Converter |
| 中文描述： | 第2A，6V的，740KHz同步降壓轉換器 |
| 文件頁數： | 10/12頁 |
| 文件大?。?/td> | 311K |
| 代理商： | MP2108 |
MP2108 – 2A, 6V, 740KHz SYNCHRONOUS BUCK CONVERTER
MP2108 Rev 1.1
10/2/2006
www.MonolithicPower.com
10
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
Choose the compensation resistor to set the
desired crossover frequency. Determine the
value by the following equation:
FB
OUT
V
CS
EA
C
V
G
G
f
2
C
×
2
3
R
×
×
×
π
=
Where G
EA
is the EA transconductance
(450
μ
A/V) and f
C
is the desired crossover
frequency (preferably 33KHz).
Choose the compensation capacitor to set the
zero below one fourth of the crossover
frequency. Determine the value by the following
equation:
C
f
3
R
2
3
C
×
×
π
>
Determine
capacitor, C4 is required. It is required if the
ESR zero of the output capacitor happens at
less than half of the switching frequency or:
if
the
second
compensation
1
f
R
2
C
SW
ESR
>
×
×
×
π
where R
ESR
is the equivalent series resistance
of the output capacitor.
The
determined by the equation:
second
compensation
capcacitor
is
3
R
R
2
C
4
C
(max)
ESR
×
=
Where R
ESR(MAX)
is the maximum ESR of the
output capacitor.
External Boost Diode
It is recommended that an external boost diode
be added to help improve the regulator
efficiency. The diode can be a low cost diode
such as an IN4148 or BAT54.
MP2108
LX
BST
5V
BOOST
DIODE
10nF
1
3
Figure 3—External Boost Diode
This diode is also recommended for high duty
V
cycle operation (when
IN
OUT
V
>65%).
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| MP2108_06 | 2A, 6V, 740KHz Synchronous Buck Converter |
| MP2109_06 | Dual 1.2MHz, 800mA Synchronous Step-Down Converter |
| MP2109 | Dual 1.2MHz, 800mA Synchronous Step-Down Converter |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MP2108_06 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:2A, 6V, 740KHz Synchronous Buck Converter |
| MP2108DK | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:2A, 6V, 740KHz Synchronous Buck Converter |
| MP2108DK-LF-P | 功能描述:開關變換器、穩(wěn)壓器與控制器 2A, 6V, 720kHz Synchronous Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MP2108DK-LF-Z | 功能描述:開關變換器、穩(wěn)壓器與控制器 2A, 6V, 720kHz Synchronous Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MP2108DQ | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:2A, 6V, 740KHz Synchronous Buck Converter |
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