© Semiconductor Components Industries, LLC, 2007
October, 2007 - Rev. 8
1 Publication Order Number:
NCP5422A/D
NCP5422A
Dual Out-of-Phase
Synchronous
Buck Controller
with Current Limit
The NCP5422A is a dual N-channel synchronous buck regulator
controller. It contains all the circuitry required for two independent
buck regulators and utilizes the V
2
t control method to achieve the
fastest possible transient response and best overall regulation, while
using the least number of external components. The NCP5422A
features out-of-phase synchronization between the channels,
reducing the input filter requirement. The NCP5422A also provides
undervoltage lockout, Soft-Start, built in adaptive non-overlap time
and hiccup mode overcurrent protection.
Features
•V
2
Control Topology
•Hiccup Mode Overcurrent Protection
•150 ns Transient Response
•Programmable Soft-Start
•100% Duty Cycle for Enhanced Transient Response
•150 kHz to 600 kHz Programmable Frequency Operation
•Switching Frequency Set by Single Resistor
•Out-Of-Phase Synchronization Between Channels
•Undervoltage Lockout
•Both Gate Drive Outputs Held Low During Fault Condition
•Pb-Free Packages are Available
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb-Free Package
Device Package Shipping
†
ORDERING INFORMATION
NCP5422ADR2 SO-16
2500 Tape & Reel
V
FB1
COMP1
IS+1
GATE(H)1
MARKING DIAGRAMS AND
PIN CONNECTIONS
GATE(L)1
GND
BST
IS-1
SO-16
AD SUFFIX
CASE 751B
1
16
GATE(H)2
GATE(L)2
V
CC
R
OSC
IS+2
IS-2
V
FB2
COMP2
AWLYWW
NCP5422AG
16
1
http://onsemi.com
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
NCP5422ADR2G SO-16
(Pb-Free)
2500 Tape & Reel
