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NCP1589A Datasheet, PDF (1/10 Pages) ON Semiconductor – Low Voltage Synchronous Buck Controller | |||
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NCP1589A, NCP1589B
Product Preview
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 10âpin 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 nonâoverlap 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 PbâFree Device
Applications
⢠Graphics Cards
⢠Desktop Computers
⢠Servers / Networking
⢠DSP & FPGA Power Supply
⢠DCâDC Regulator Modules
http://onsemi.com
MARKING DIAGRAMS
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
= PbâFree 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
Shippingâ
NCP1589AMNTWG
NCP1589BMNTWG DFN10
NCP1589AMNTXG (PbâFree)
3000 /
Tape & Reel
NCP1589BMNTXG
â 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.
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
© Semiconductor Components Industries, LLC, 2009
1
May, 2009 â Rev. P4
Publication Order Number:
NCP1589A/D
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