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NCP1587A

更新时间： 2024-11-20 05:52:03
品牌 Logo 应用领域
安森美 - ONSEMI 控制器
页数 文件大小 规格书
16页 487K
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Low Voltage Synchronous Buck Controller

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NCP1587A 数据手册

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NCP1587, NCP1587A  
Low Voltage Synchronous  
Buck Controller  
The NCP1587 and NCP1587A are low cost PWM controllers  
designed to operate from a 5 V or 12 V supply. These devices are  
capable of producing an output voltage as low as 0.8 V. These 8−pin  
devices provide an optimal level of integration to reduce size and cost  
of the power supply. The NCP1587/A provide a 1 A gate driver design  
and an internally set 275 kHz (NCP1587) and 200 kHz (NCP1587A)  
oscillator. In addition to the 1 A gate drive capability, other efficiency  
enhancing features of the gate driver include adaptive non−overlap  
circuitry. The devices also incorporate an externally compensated  
error amplifier and a capacitor programmable soft−start function.  
Protection features include programmable short circuit protection and  
under voltage lockout (UVLO). The NCP1587/A comes in an 8−pin  
SOIC package.  
http://onsemi.com  
MARKING DIAGRAM  
8
SOIC−8  
D SUFFIX  
CASE 751  
1587x  
ALYW  
G
8
1
1
1587x = Specific Device Code  
(x = A for NCP1587A,  
blank for NCP1587)  
Features  
A
L
= Assembly Location  
= Wafer Lot  
• Input Voltage Range from 4.5 to 13.2 V  
• 275 kHz (NCP1587) and 200 kHz (NCP1587A) Internal Oscillator  
• Boost Pin Operates to 30 V  
Y
W
G
= Year  
= Work Week  
= Pb−Free Device  
• Voltage Mode PWM Control  
PIN CONNECTIONS  
• 0.8 V 1.0 % Internal Reference Voltage  
• Adjustable Output Voltage  
BST  
TG  
PHASE  
COMP/DIS  
FB  
1
2
3
4
8
7
6
5
• Capacitor Programmable Soft−Start  
• Internal 1 A Gate Drivers  
• 80% Max Duty Cycle  
GND  
BG  
• Input Under Voltage Lockout  
V
CC  
• Programmable Current Limit  
(Top View)  
• This is a Pb−Free Device  
Applications  
ORDERING INFORMATION  
• Graphics Cards  
• Desktop Computers  
• Servers / Networking  
• DSP & FPGA Power Supply  
• DC−DC Regulator Modules  
†
Device  
Package  
Shipping  
NCP1587DR2G  
SOIC−8  
(Pb−Free)  
2500/Tape & Reel  
2500/Tape & Reel  
NCP1587ADR2G  
SOIC−8  
(Pb−Free)  
†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, 2009  
1
Publication Order Number:  
February, 2009 − Rev. 2  
NCP1587/D  
1234567...16

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