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PDF NCP1589B Data sheet ( Hoja de datos )
| Número de pieza | NCP1589B | |
| Descripción | Low Voltage Synchronous Buck Controller | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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NCP1589A, NCP1589B
Low Voltage Synchronous
Buck Controller
The NCP1589A/B 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.
Features include a 1.5 A gate driver design and an internally set
300 kHz or 600 kHz 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 NCP1589A/B also
incorporates an externally compensated error amplifier. Protection
features include programmable short circuit protection and
undervoltage lockout (UVLO).
Features
• VCC Range from 4.5 V to 13.2 V
• 300 kHz and 600 kHz Internal Oscillator
• Boost Pin Operates to 30 V
• Voltage Mode PWM 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
• 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
1589x
ALYWG
G
1589x
A
L
Y
W
G
= Specific Device Code
x = A or B
= 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
10 PGOOD
9 VOS
8 FB
7 COMP/EN
6 VCC
(Top View)
ORDERING INFORMATION
Device
Package Shipping†
NCP1589AMNTWG
NCP1589BMNTWG DFN10
NCP1589AMNTXG (Pb−Free)
3000 /
Tape & Reel
NCP1589BMNTXG
†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, 2015
December, 2015 − Rev. 1
1
Publication Order Number:
NCP1589A/D
1 page  
NCP1589A, NCP1589B
TYPICAL CHARACTERISTICS
303
VCC = 12 V
302 VCC = 5 V
301
300
299
0
10 20 30 40 50 60
TJ, JUNCTION TEMPERATURE (°C)
Figure 3. Oscillator Frequency (FSW) vs.
Temperature
5.3
NCP1589B
5.0
70
4.7
NCP1589A
4.4
4.1
3.8
3.5
0
20 40 60
TJ, JUNCTION TEMPERATURE (°C)
80
Figure 5. ICC vs. Temperature
808
806
804
802
800
798
796
794
792
0
543
20 40 60
TJ, JUNCTION TEMPERATURE (°C)
Figure 4. Reference Voltage (Vref) vs.
Temperature
80
542
541
540
539
0
20 40 60
TJ, JUNCTION TEMPERATURE (°C)
80
Figure 6. OCP Threshold at 55k vs. Temperature
www.onsemi.com
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet NCP1589B.PDF ] | |
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