NCP1586
Low Voltage Synchronous
Buck Controller
The NCP1586 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 8−pin device provides an optimal
level of integration to reduce size and cost of the power supply. The
NCP1586 provides a 1 A gate driver design and an internally set
275 kHz oscillator. In addition to the 1 A gate drive capability, other
efficiency enhancing features of the gate driver include adaptive
non−overlap circuitry. The NCP1586 also incorporates an externally
compensated error amplifier and a capacitor programmable soft−start
function. Protection features include programmable short circuit
protection and under voltage lockout (UVLO). The NCP1586 comes
in an 8−pin SOIC package.
Features
http://onsemi.com
MARKING DIAGRAM
8
8
1
SOIC−8
D SUFFIX
CASE 751
1
1586
ALYW
G
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Input Voltage Range from 4.5 to 13.2 V
275 kHz Internal Oscillator
Boost Pin Operates to 26.5 V
Voltage Mode PWM Control
0.8 V
±1.0
% Internal Reference Voltage
Adjustable Output Voltage
Capacitor Programmable Soft−start
Internal 1 A Gate Drivers
80% Max Duty Cycle
Input Under Voltage Lockout
Programmable Current Limit
This is a Pb−Free Device
1586 = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G
= Pb−Free Device
PIN CONNECTIONS
BST 1
TG 2
GND 3
BG 4
(Top View)
8 PHASE
7 COMP/DIS
6 FB
5 V
CC
Applications
ORDERING INFORMATION
Device
NCP1586DR2G
Package
SOIC−8
(Pb−Free)
Shipping
†
2500/Tape & Reel
Graphics Cards
Desktop Computers
Servers / Networking
DSP & FPGA Power Supply
DC−DC Regulator Modules
†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, 2007
1
March, 2007 − Rev. 0
Publication Order Number:
NCP1586/D
ONSEMI [ ON SEMICONDUCTOR ]
