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NCP1529_10

更新时间： 2024-09-20 12:00:19
品牌 Logo 应用领域
安森美 - ONSEMI 转换器
页数 文件大小 规格书
16页 252K
描述
1.7MHz, 1A, High Efficiency, Low Ripple, Adjustable Output Voltage Step-down Converter

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中文翻译

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NCP1529_10 数据手册

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NCP1529  
1.7MHz, 1A, High Efficiency,  
Low Ripple, Adjustable  
Output Voltage Step-down  
Converter  
The NCP1529 step−down DC−DC converter is a monolithic  
integrated circuit for portable applications powered from one cell  
Li−ion or three cell Alkaline/NiCd/NiMH batteries. The device is able  
to deliver up to 1.0 A on an output voltage range externally adjustable  
from 0.9 V to 3.9 V or fixed at 1.2 V or 1.35 V. It uses synchronous  
rectification to increase efficiency and reduce external part count. The  
device also has a built−in 1.7 MHz (nominal) oscillator which reduces  
component size by allowing a small inductor and capacitors. Automatic  
switching PWM/PFM mode offers improved system efficiency.  
Additional features include integrated soft−start, cycle−by−cycle  
current limiting and thermal shutdown protection.  
The NCP1529 is available in a space saving, low profile  
2x2x0.5 mm UDFN6 package and TSOP−5 package.  
Features  
• Up to 96% Efficiency  
• Best In Class Ripple, including PFM mode  
• Source up 1.0 A  
http://onsemi.com  
MARKING  
DIAGRAM  
5
TSOP−5  
SN SUFFIX  
CASE 483  
DXJAYWG  
G
5
1
1
DXJ  
A
= Specific Device Code  
= Assembly Location  
= Year  
= Work Week  
= Pb−Free Package  
Y
W
G
(Note: Microdot may be in either location)  
UDFN6  
MU SUFFIX  
CASE 517AB  
1
2
3
6
5
4
XXMG  
G
• 1.7 MHz Switching Frequency  
• Adjustable from 0.9 V to 3.9 V or Fixed at 1.2 V or 1.35 V  
• Synchronous rectification for higher efficiency  
• 2.7 V to 5.5 V Input Voltage Range  
• Low Quiescent Current 28 mA  
• Shutdown Current Consumption of 0.3 mA  
• Thermal Limit Protection  
XX  
M
G
= Specific Device Code  
= Date Code  
= Pb−Free Package  
(Note: Microdot may be in either location)  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 14 of this data sheet.  
• Short Circuit Protection  
• All Pins are Fully ESD Protected  
• These are Pb−Free Devices  
Typical Applications  
• Cellular Phones, Smart Phones and PDAs  
• Digital Still Cameras  
• MP3 Players and Portable Audio Systems  
• Wireless and DSL Modems  
• USB Powered Devices  
• Portable Equipment  
L
L
V
V
OUT  
OUT  
V
IN  
V
IN  
VIN  
SW  
FB  
VIN  
EN  
SW  
FB  
C
C
IN  
IN  
C
C
OUT  
OUT  
R1  
R2  
C
ff  
OFF ON  
OFF ON  
EN  
GND  
GND  
Figure 1. Typical Application for Adjustable Version  
Figure 2. Typical Application for Fixed Version  
© Semiconductor Components Industries, LLC, 2010  
1
Publication Order Number:  
September, 2010 − Rev. 5  
NCP1529/D  
1234567...16

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