Document
NCP3030A, NCP3030B, NCV3030A, NCV3030B
Synchronous PWM Controller
The NCP3030 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 NCP3030 provides integrated gate drivers and an internally set 1.2 MHz (NCP3030A) or 2.4 MHz (NCP3030B) oscillator. The NCP3030 also 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 NCP3030 is currently available in a SOIC−8 package.
Features
• Input Voltage Range from 4.7 V to 28 V • 1.2 MHz Operation (NCP3030B – 2.4 MHz) • 0.8 V Internal Reference Voltage • Internally Programmed 1.8 ms Soft−Start (NCP3030B – 1.3 ms) • Current Limit and Short Circuit Protection • Transconductance Amplifier with External Compensation • Input Undervoltage Lockout • Output Overvoltage and Undervoltage Detection • NCV Prefix for Automotive and Other Applications Requiring Site
and Change Controls
• These are Pb−Free Devices
www.onsemi.com
8 1
SOIC−8 NB CASE 751
MARKING DIAGRAM
8
3030x ALYW
G
1
3030x
A L Y W G
= Specific Device Code x = A or B = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package
VIN CIN
CBST VCC BST
HSDR
Q1
PIN CONNECTIONS
VCC COMP
FB GND
BST HSDR VSW LSDR
COMP
VSW
L0 Vout
ORDERING INFORMATION
Device
Package
Shipping†
RC
CC1 FB
LSDR
Q2 RFB1
NCP3030ADR2G SOIC−8 2500 / Tape & Reel
C0 (Pb−Free)
CC2
GND
RISET
RFB2
NCP3030BDR2G SOIC−8 2500 / Tape & Reel
(Pb−Free)
Figure 1. Typical Application Circuit
NCV3030ADR2G SOIC−8 2500 / Tape & Reel (Pb−Free)
NCV3030BDR2G 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.
© Semiconductor Components Industries, LLC, 2011
July, 2018 − Rev. 2
1
Publication Order Number: NCP3030/D
NCP3030A, NCP3030B, NCV3030A, NCV3030B
VCC
INTERNAL BIAS POR/STARTUP THERMAL SD
VC BOOST CLAMP
COMP FB
OSCILLATOR
CLK/ DMAX/ SOFT START
RAMP
1.5 V
GATE DRIVE LOGIC
REF
OTA
+ −
PWM COMP
LEVEL SHIFT
VCC
CURRENT SAMPLE &
LIMIT
HOLD
ISET VC
+ −
OOV OUV + −
Figure 2. NCP3030 Block Diagram
BST_CHRG
BST HSDR VSW
LSDR
GND
PIN FUNCTION DESCRIPTION
Pin Pin Name
Description
1 VCC The VCC pin is the main voltage supply input. It is also used in conjunction with the VSW pin to sense current in the high side MOSFET.
2 COMP The COMP pin connects to the output of the Operational Transconductance Amplifier (OTA) and the positive terminal of the PWM comparator. This pin is used in conjunction with the FB pin to compensate the voltage mode control feedback loop.
3 FB The FB pin is connected to the inverting input of the OTA. This pin is used in conjunction with the COMP pin to compensate the voltage .