NCP1589C Datasheet, PDF (1/10 Pages) ON Semiconductor – Low Voltage Synchronous Buck Controller

NCP1589C
Low Voltage Synchronous
Buck Controller
The NCP1589C 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 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 NCP1589C also incorporates an externally
compensated error amplifier. Protection features include
programmable short circuit protection and undervoltage lockout
(UVLO).
Features
• V_CC Range from 4.5 V to 13.2 V
• 300 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
http://onsemi.com
MARKING DIAGRAM
DFN10
CASE 485C
1589C
ALYWG
G
1589C
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 1
LX 2
UG 3
LG 4
GND ⁵
10 ^PGOOD
9 VOS
8 FB
7 COMP/EN
6 VCC
(Top View)
ORDERING INFORMATION
Device
Package
Shipping^†
NCP1589CMNTWG 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, 2011
1
November, 2011 − Rev. 1
Publication Order Number:
NCP1589C/D