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參數(shù)資料
| 型號： | MP1542DH |
| 廠商： | MONOLITHIC POWER SYSTEMS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 700KHz/1.3MHz Boost Converter with a 2A Switch |
| 中文描述： | 2 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | MO-187AA-T, MSOP-8 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 491K |
| 代理商： | MP1542DH |
MP1542 – 700KHz/1.3MHz BOOST CONVERTER WITH A 2A SWITCH
MP1542 Rev. 1.2
12/14/2005
www.MonolithicPower.com
5
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2005 MPS. All Rights Reserved.
PIN FUNCTIONS
Pin # Name Description
1
COMP Compensation Pin. Connect a capacitor and resistor in series to ground for loop stability.
2
FB
Feedback Input. Reference voltage is 1.25V. Connect a resistor divider to this pin.
Regulator On/Off Control Input. A high input at EN turns on the converter, and a low input turns
it off. When not used, connect EN to the input source (through a 100k
pull-up resistor if V
IN
>
6V) for automatic startup.
EN cannot be left floating.
4
GND Ground.
Power Switch Output. SW is the drain of the internal MOSFET switch. Connect the power
inductor and output rectifier to SW. SW can swing between GND and 25V.
6
IN
Input Supply Pin. IN must be locally bypassed.
Frequency Select Pin. Tie to IN (through a 100k
resistor if V
IN
> 6V) for 1.3MHz operation or to
GND for 700KHz operation.
Soft-Start Control Pin. Connect a soft-start capacitor to this pin. The soft-start capacitor is
charged with a constant current of 6μA.
3
EN
5
SW
7
FSEL
8
SS
OPERATION
The MP1542 uses a constant frequency, peak
current mode boost regulation architecture to
regulate the feedback voltage.
The operation of the MP1542 can be
understood by referring to the block diagram of
Figure 1.
PWM
CONTROL
LOGIC
CURRENT
SENSE
AMP
OSCILLATOR
INTERNAL REGULATOR
AND ENABLE CIRCUITRY
--
+
GM
+
--
GND
FB
COMP
SS
1.25V
SW
IN
--
+
FSEL
EN
MP1542_BD01
4
5
2
1
3
7
8
6
Figure 1—Functional Block Diagram
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| MP1542DK | 700KHz/1.3MHz Boost Converter with a 2A Switch |
| MP1542 | 700KHz/1.3MHz Boost Converter with a 2A Switch |
| MP1542_06 | 700KHz/1.3MHz Boost Converter with a 2A Switch |
| MP1543 | 1.5A, 500KHz Synchronous Rectified Step-up Converter |
| MP1543DJ | 1.5A, 500KHz Synchronous Rectified Step-up Converter |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MP1542DK | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:700KHz/1.3MHz Boost Converter with a 2A Switch |
| MP1542DK-LF-P | 功能描述:開關變換器、穩(wěn)壓器與控制器 .7/1.3MHz 22Vout Step-up Converter 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 |
| MP1542DK-LF-Z | 功能描述:開關變換器、穩(wěn)壓器與控制器 .7/1.3MHz 22Vout Step-up Converter 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 |
| MP1543 | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:1.5A, 500KHz Synchronous Rectified Step-up Converter |
| MP1543DJ | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:1.5A, 500KHz Synchronous Rectified Step-up Converter |
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