NCP3020A Datasheet, PDF (1/23 Pages) ON Semiconductor – Synchronous PWM Controller

NCP3020A, NCP3020B
Product Preview
Synchronous PWM Controller
The NCP3020 is a PWM device designed to operate from a wide
input range and is capable of producing an output voltage as low as
0.6 V. The NCP3020A provides integrated gate drivers and an
internally set 300 kHz oscillator (600 kHz for the NCP3020B). The
NCP3020 has an externally compensated transconductance error
amplifier with an internally fixed soft−start. Protection features
include lossless current limit and Short Circuit Protection, Output
Overvoltage protection, Output Undervoltage protection, and Input
Undervoltage Lockout. The NCP3020 is currently available in a
SOIC−8 package.
Features
• Input Voltage Range from 4.5 V to 28 V
• Switching and Synchronous Rectifier Drives with >1.0 A Capability
• 300 kHz Operation (NCP3020B – 600 kHz)
• 0.6 ± 1.0% Reference Voltage
• Internally Programmed 6.8 ms Soft−Start (NCP3020B – 3.4 ms)
• Current Limit and Short Circuit Protection
• Transconductance Amplifier with External Compensation
• Input Undervoltage Lockout
• Output Overvoltage and UndervoltageDetection
• This is a Pb−Free Device
http://onsemi.com
8
1
SOIC−8 NB
CASE 751
MARKING DIAGRAM
8
XXXXX
ALYW
G
1
XXXXX = Specific Device Code
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
4.5−28 V
R_C
C_C2
C_IN
C_BST
VCC BST
HSDR
COMP
VSW
C_C1
FB
LSDR
GND
R_ISET
Figure 1. Typical Application Circuit
Q1
L₀
Q2
PIN CONNECTIONS
V_CC
COMP
FB
GND
BST
HSDR
VSW
LSDR
Vout
R_FB1
C₀
R_FB2
ORDERING INFORMATION
Device
Package
Shipping^†
NCP3020ADR2G SOIC−8 2500 / Tape & Reel
(Pb−Free)
NCP3020BDR2G SOIC−8 2500 / Tape & Reel
(Pb−Free)
†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
November, 2009 − Rev. P1
Publication Order Number:
NCP3020/D