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NCP1588 데이터시트 PDF




ON Semiconductor에서 제조한 전자 부품 NCP1588은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 NCP1588 기능
기능 Low Voltage Synchronous Buck Controller
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NCP1588 데이터시트, 핀배열, 회로
www.DataSheet4U.com
NCP1588
Low Voltage Synchronous
Buck Controller
The NCP1588 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. This device is capable of converting
voltage from as low as 2.5 V. This 10-pin device provides an optimal
level of integration to reduce size and cost of the power supply. The
NCP1588 provides a 1.5 A gate driver design and an internally set
300ĂkHz oscillator. In addition to the 1.5 A gate drive capability, other
efficiency enhancing features of the gate driver include adaptive
non-overlap circuitry. The NCP1588 also incorporates an externally
compensated error amplifier. Protection features include
programmable short circuit protection and undervoltage lockout
(UVLO).
Features
ăVCC Range from 4.5 to 13.2 V
ă300 kHz Internal Oscillator
ăBoost Pin Operates to 26.4 V
ăVoltage Mode PWM Control
ă0.8 V ±1.0% Internal Reference Voltage
ăAdjustable Output Voltage
ăInternal 1.5 A Gate Drivers
ă80% Max Duty Cycle
ăInput Under Voltage Lockout
ăProgrammable Current Limit
ăThis is a Pb-Free Device
Applications
ăGraphics Cards
ăDesktop Computers
ăServers / Networking
ăDSP & FPGA Power Supply
ăDC-DC Regulator Modules
http://onsemi.com
MARKING DIAGRAM
DFN10
MT SUFFIX
CASE 485C
1588
ALYWG
G
1588 = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb-Free Device
(Note: Microdot may be in either location)
PIN CONNECTIONS
BOOT
LX
UG
LG
GND
1
2
3
4
5
10 PGOOD
9 VOS
8 FB
7 COMP/EN
6 VCC
(Top View)
ORDERING INFORMATION
Device
Package
Shipping
NCP1588MTR2G DFN10 3000/Tape & Reel
(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.
©Ă Semiconductor Components Industries, LLC, 2007
June, 2007 - Rev. 0
1
Publication Order Number:
NCP1588/D




NCP1588 pdf, 반도체, 판매, 대치품
NCP1588
ELECTRICAL CHARACTERISTICS (0°C < TA < 70°C, 0°C < TJ < 125°C (NCP1588); 4.5 V < VCC < 13.2 V, 4.5 V < BOOT < 26.4 V,
CUG = CLG = 1.0 nF (REF:NTD30N02), for min/max values unless otherwise noted.)
Characteristic
Conditions
Min Typ Max Unit
Input Voltage Range
4.5 13.2 V
Boost Voltage Range
13.2 V wrt LX
4.5
26.4 V
Supply Current
Quiescent Supply Current
Boost Quiescent Current
Undervoltage Lockout
VFB = 1.0 V, No Switching, VCC = 13.2 V
VFB = 1.0 V, No Switching
1.0 1.75 mA
140 mA
UVLO threshold
UVLO hysteresis
VCC Rising Edge
3.8 4.0
0.37
V
V
Switching Regulator
VFB Feedback Voltage,
control loop in regulation
TA = 0 to 70°C
0.792 0.8 0.808
V
Oscillator Frequency
Ramp-Amplitude Voltage
TA = 0 to 70°C
270 300 330 KHz
1.1 V
Minimum Duty Cycle
0%
Maximum Duty Cycle
70 75 80 %
LG minimum on time
500 ns
Error Amplifier
Open loop dc gain
70 80
DB
Output source current
Output sink current
Input Offset Voltage
Vfb < 0.8 V
Vfb > 0.8 V
2.0 mA
2.0
-2.0 0 2.0 mV
Input Bias Current
0.1 1.0 mA
Unity Gain Bandwidth
15 Mhz
Disable Threshold
0.3 0.5 V
Output Sink current during disable
100 mA
Gate Drivers
Upper Gate source
Upper Gate sink
VCC = 5 V, VUG - VLX = 2.5 V
1.5
1.4
A
W
Lower Gate source
1.5 A
Lower Gate sink
UG falling to LG rising delay
LG falling to UG rising delay
Soft-Start
VCC = 12 V
VCC = 12 V, UG-LX < 2.0 V, LG > 2.0 V
VCC = 12 V, LG < 2.0 V, UG > 2.0 V
1.0
30 90
30 60
W
ns
ns
Soft-Start time
3.0 7.0 ms
Power Good
Output Saturation Voltage
OVP threshold to part disable
IPG = 4 mA, VCC = 12 Vdc
0.4
1.0
V
V
UVP threshold to part disable
0.6 V
OVP threshold to PGOOD output low
0.88 V
UVP threshold to PGOOD output low
0.72 V
Overcurrent Protection
OC Current source
Sourced from LG pin, before SS 10 mA
http://onsemi.com
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NCP1588 전자부품, 판매, 대치품
VCC
UVLO
Fault
4.0 V
NCP1588
COMP
-0.7 V
UG
LG
VOUT
1.1 V
700 mV
50 mV
OCP
Program‐
mable
0.8 V
Vfb
UV
Monitor
POR
UVLO
SS NORMAL
Figure 7. Typical Startup Sequence
3.6 V
http://onsemi.com
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