NCP5422A_06 Datasheet, PDF (1/16 Pages) ON Semiconductor – Dual Out−of−Phase Synchronous Buck Controller with Current Limit

NCP5422A, NCP5423
Dual Out−of−Phase
Synchronous
Buck Controller
with Current Limit
The NCP5422A/3 is a dual N−channel synchronous buck regulator
controller. It contains all the circuitry required for two independent
buck regulators and utilizes the V²t control method to achieve the
fastest possible transient response and best overall regulation, while
using the least number of external components. The NCP5422A/3
features out−of−phase synchronization between the channels,
reducing the input filter requirement. The NCP5422A/3 also provides
undervoltage lockout, Soft−Start, built in adaptive non−overlap time
and hiccup mode overcurrent protection.
Features
• V² 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
http://onsemi.com
16
1
SO−16
AD SUFFIX
CASE 751B
MARKING DIAGRAMS AND
PIN CONNECTIONS
1
GATE(H)1
GATE(L)1
GND
BST
IS+1
IS−1
V_FB1
COMP1
16
GATE(H)2
GATE(L)2
V_CC
R_OSC
IS+2
IS−2
V_FB2
COMP2
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
ORDERING INFORMATION
Device
Package
Shipping^†
NCP5422ADR2
SO−16 2500 Tape & Reel
NCP5422ADR2G SO−16 2500 Tape & Reel
(Pb−Free)
NCP5423DR2G
SO−16 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 Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2006
1
April, 2006 − Rev. 7
Publication Order Number:
NCP5422A/D