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參數(shù)資料
| 型號： | MP1570DN |
| 廠商： | MONOLITHIC POWER SYSTEMS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3A, 23V, 340KHz Synchronous Rectified Step-Down Converter |
| 中文描述： | 3 A SWITCHING REGULATOR, 380 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 333K |
| 代理商： | MP1570DN |
MP1570
3A, 23V, 340KHz Synchronous Rectified
Step-Down Converter
The Future of Analog IC Technology
MP1570 Rev. 1.5
1/31/2006
www.MonolithicPower.com
1
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
TM
TM
DESCRIPTION
The MP1570 is a monolithic synchronous buck
regulator.
The
device
MOSFETS that provide 3A continuous load
current over a wide operating input voltage of
4.75V to 23V. Current mode control provides
fast transient response and cycle-by-cycle
current limit.
integrates
100m
An adjustable soft-start prevents inrush current
at turn-on. In shutdown mode, the output is
actively discharged by transferring energy in the
output capacitor to the input capacitor, dropping
the supply current to 1μA.
This device, available in an 8-pin SOIC
package, provides a very compact system
solution with minimal reliance on external
components.
EVALUATION BOARD REFERENCE
Board Number
EV1570DN-00A
Dimensions
2.0”X x 1.5”Y x 0.5”Z
FEATURES
3A Output Current
Wide 4.75V to 23V Operating Input Range
Integrated 100m
Power MOSFET Switches
Output Adjustable from 1.23V to 20V
Up to 95% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output Capacitors
Fixed 340KHz Frequency
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
Thermally Enhanced 8-Pin SOIC Package
APPLICATIONS
Distributed Power Systems
Pre-Regulator for Linear Regulators
Notebook Computers
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
INPUT
4.75V to 23V
OUTPUT
3.3V
3A
C3
3.3nF
D1
B130
(optional)
C5
10nF
MP1570
BS
IN
1
2
3
5
6
4
8
7
FB
SW
SS
GND
COMP
EN
C6
(optional)
MP1570_TAC01
100
95
90
85
80
75
70
65
60
E
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
LOAD CURRENT (A)
MP1570-EC02
Efficiency vs.
Load Current
V
IN
=9V
V
IN
=12V
V
IN
=23V
V
OUT
=5V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MP1570 | 3A, 23V, 340KHz Synchronous Step-Down Converter |
| MP1580HP | 2A, 380 KHz Step-Down Converter |
| MP1580HS | 2A MP1580 Step Down Switch Mode Converter |
| MP1591DN | 2A, 32V, 330KHz Step-Down Converter |
| MP1591 | 2A, 32V, 330KHz Step-Down Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MP1570DN-LF | 制造商:Monolithic Power Systems 功能描述:3A/23V SYNCH STEP-DOWN CONVERTER - Bulk |
| MP1570DN-LF-Z | 制造商:Monolithic Power Systems 功能描述:CONV DC-DC SGL-OUT STEP DOWN 8SOIC-EP - Tape and Reel 制造商:MPS 功能描述:STEP DOWN SWITCHER / SOIC 8N (LEAD FREE) |
| MP157GJ-P | 制造商:Monolithic Power Systems 功能描述:6W ACDC BUCK REGULATOR - Tape and Reel |
| MP157GJ-Z | 制造商:Monolithic Power Systems 功能描述:6W ACDC BUCK REGULATOR - Tape and Reel |
| MP157GS | 制造商:Monolithic Power Systems 功能描述:ACDC 6W BUCK REGULATOR - Bulk |
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