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NCP1589D

更新时间： 2024-11-11 01:21:31
品牌 Logo 应用领域
安森美 - ONSEMI /
页数 文件大小 规格书
8页 89K
描述
Low Voltage Synchronous Buck Controller

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NCP1589D 数据手册

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NCP1589D  
Low Voltage Synchronous  
Buck Controller with Light  
Load Efficiency and  
Transient Enhancement  
www.onsemi.com  
MARKING  
The NCP1589D is a low cost PWM controller designed to operate  
from a 5 V or 12 V supply. This device is capable of producing an  
output voltage as low as 0.8 V and converting voltage from as low as  
2.5 V. It is easy to operate and provides an optimal level of integration  
to reduce size and cost of the power supply. It operates in Ramp Pulse  
Modulation mode for superior load step and release response. In  
addition to fast transient response, it also includes a 1.5 A gate driver  
design and light load efficiency features such as adaptive non−overlap  
circuitry and diode emulation. It normally operates at a range of  
200−500 kHz in continuous current conduction mode, which reduces  
with current at light load for further power saving. Protection features  
include programmable overcurrent protection, output overvoltage and  
undervoltage protection and input undervoltage lockout (UVLO).  
DIAGRAM  
1589D  
ALYWG  
G
DFN10  
CASE 485C  
1589D = Specific Device Code  
A
L
Y
W
G
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
= Pb−Free Device  
(Note: Microdot may be in either location)  
Features  
• V Range from 4.5 V to 13.2 V  
CC  
• Adjustable Operating frequency  
• Boost Pin Operates to 35 V  
PIN CONNECTIONS  
• Ramp Pulse Modulation Control  
• Precision 0.8 V Internal Reference  
• Adjustable Output Voltage  
PGOOD  
VORPM  
FB  
1
2
3
4
5
BOOT  
LX  
10  
9
8
UG  
• Internal 1.5 A Gate Drivers  
• 80% Max Duty Cycle  
LG  
7
COMP/DISB  
Flag  
V
CC  
GND  
6
• Input Under Voltage Lockout  
• Programmable Current Limit  
• Adaptive Diode Mode Emulation in Light Load  
• This is a Pb−Free Device  
(Top View)  
ORDERING INFORMATION  
Applications  
†
Device  
NCP1589DMNTWG  
Package  
Shipping  
• Graphics Cards  
• Desktop Computers  
• Servers / Networking  
• DSP & FPGA Power Supply  
• DC−DC Regulator Modules  
DFN10  
(Pb−Free)  
3000 /  
Tape & Reel  
†For information on tape and reel specifications,  
including part orientation and tape sizes, please  
refer to our Tape and Reel Packaging Specifications  
Brochure, BRD8011/D.  
© Semiconductor Components Industries, LLC, 2017  
1
Publication Order Number:  
January, 2017 − Rev. 2  
NCP1589D/D  
12345678

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