NCP3233 Datasheet, PDF (1/17 Pages) ON Semiconductor – High Current Synchronous Buck Converter

NCP3233
High Current Synchronous
Buck Converter
The NCP3233 is a high current, high efficiency voltage−mode
synchronous buck controller which operates from 3.0 V to 21 V input
and generates output voltages down to 0.6 V at up to 20 A.
Features
• Wide Input Voltage Range from 3.0 V to 21 V
• 0.6 V 1% Accurate Internal Reference Over Temperature
• Fixed Switching Frequency: 500 kHz (1 MHz and 300 kHz options
contact factory)
• External Programmable Soft−Start
• Lossless Low−side and High−side FET Current Sensing
• Output Overvoltage Protection and Undervoltage Protection
• Recoverable Overvoltage Protection
• Hiccup Mode Operation for UVP, LS OCP and TSD
• Pre−bias Start−up
• Adjustable Output Voltage
• Power Good Output
• Internal Overtemperature Protection
• Adjustable Input UVLO
• This is a Pb−Free Device
Typical Application
• Cellular Base Stations
• ASIC, FPGA, DSP and CPU Core and I/O Supplies
• Telecom and Network Equipment
• Server and Storage System
www.onsemi.com
1 40
QFN40 6x6, 0.5P
CASE 485AZ
MARKING
DIAGRAM
1
NCP3233
AWLYYWWG
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
G
= Pb−Free Package
PIN CONNECTIONS
VIN ₁₁
VIN ₁₂
VIN 13
VIN 14
VSW 15
PGND 16
PGND 17
PGND 18
PGND 19
PGND 20
VIN
EP42
GND
EP41
VSW
EP43
40 _VCC
39 _XCP
38 VINX
37 GND
36 PG
35 BST
34 VSW
33 VSW
32 VSW
31 VSW
(Top View)
ORDERING INFORMATION
Device
Package
NCP3233MNTXG QFN40
(Pb−Free)
Shipping^†
2500 /
Tape & Reel
†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, 2015
1
November, 2015 − Rev. 4
Publication Order Number:
NCP3233/D