NCP1589D 반도체 회로 부품 판매점
Low Voltage Synchronous Buck Controller
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 ON Semiconductor |
NCP1589D
Low Voltage Synchronous
Buck Controller with Light
Load Efficiency and
Transient Enhancement
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).
Features
• VCC Range from 4.5 V to 13.2 V
• Adjustable Operating frequency
• Boost Pin Operates to 35 V
• Ramp Pulse Modulation Control
• Precision 0.8 V Internal Reference
• Adjustable Output Voltage
• Internal 1.5 A Gate Drivers
• 80% Max Duty Cycle
• Input Under Voltage Lockout
• Programmable Current Limit
• Adaptive Diode Mode Emulation in Light Load
• This is a Pb−Free Device
Applications
• Graphics Cards
• Desktop Computers
• Servers / Networking
• DSP & FPGA Power Supply
• DC−DC Regulator Modules
www.onsemi.com
MARKING
DIAGRAM
DFN10
CASE 485C
1589D
ALYWG
G
1589D
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Device
(Note: Microdot may be in either location)
PIN CONNECTIONS
BOOT
LX
UG
LG
GND
1
2
3
4
5
Flag
10 PGOOD
9 VORPM
8 FB
7 COMP/DISB
6 VCC
(Top View)
ORDERING INFORMATION
Device
Package
Shipping†
NCP1589DMNTWG DFN10
3000 /
(Pb−Free) 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
January, 2017 − Rev. 2
1
Publication Order Number:
NCP1589D/D
NCP1589D
VCC = 4.5 V − 13.2 V
VBST = 4.5 V − 15 V
VIN = 2.5 V − 19 V
C1
R4 R1
VCC
PGOOD
BOOT
COMP/DISB
UG
R2
LX
C2
FB LG
FLAG GND VORPM
C3
R3 R9 R10
VOUT
GND
Figure 1. Typical Application Diagram
PGOOD
10
VORPM 9
0.8 V
(Vref)
PGOOD
MONITOR
OV and UV
±10% of Vref
±25% of Vref
POR
UVLO
6 VCC
FB 8
−
+
0.8 V
(Vref)
COMP/DISB 7
FAULT
−
+
RPMSET
RAMP
COMP VPRM
LATCH
FAULT
R
PWM Q
OUT
S
LX
VORPM
+ VOCP
−
1 BOOT
3 UG
+
−
2V
+
−
2 LX
VCC
4 LG
FAULT
LX
AZCD logic
5 GND
Figure 2. Detailed Block Diagram
www.onsemi.com
2
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( onsemi )
NCP1589D controller
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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