|
NCP1579_13 Datasheet, PDF (1/11 Pages) ON Semiconductor – Low Voltage Synchronous Buck Controller | |||
|
NCP1579
Low Voltage Synchronous
Buck Controller
The NCP1579 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 8âpin device provides an optimal
level of integration to reduce size and cost of the power supply. The
NCP1579 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
nonâoverlap circuitry. The device also incorporates an externally
compensated error amplifier and a capacitor programmable softâstart
function. Protection features include programmable short circuit
protection and undervoltage lockout (UVLO). The NCP1579 comes in
an 8âpin SOIC package.
Features
⢠Input Voltage Range from 4.5 to 13.2 V
⢠275 kHz Internal Oscillator
⢠Boost Pin Operates to 30 V
⢠Voltage Mode PWM Control
⢠0.8 V ±2.0 % Internal Reference Voltage
⢠Adjustable Output Voltage
⢠Capacitor Programmable SoftâStart
⢠Internal 1 A Gate Drivers
⢠80% Max Duty Cycle
⢠Input Under Voltage Lockout
⢠Programmable Current Limit
⢠These Devices are PbâFree, Halogen Free/BFR Free and are RoHS
Compliant
Applications
⢠STB
⢠BlueâRay DVD
⢠LCD_TV
⢠DSP & FPGA Power Supply
⢠DCâDC Regulator Modules
http://onsemi.com
8
1
MARKING DIAGRAM
8
SOICâ8
D SUFFIX
CASE 751
1579
ALYW
G
1
1579 = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = PbâFree Device
PIN CONNECTIONS
BST 1
TG 2
GND 3
BG 4
8 PHASE
7 COMP/DIS
6 FB
5 VCC
(Top View)
ORDERING INFORMATION
Device
Package
Shippingâ
NCP1579DR2G SOICâ8 2500/Tape & Reel
(PbâFree)
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.
© Semiconductor Components Industries, LLC, 2013
1
April, 2013 â Rev. 3
Publication Order Number:
NCP1579/D
|
▷ |