NCP3235
High Current Synchronous
Buck Converter
The NCP3235 is a high current, high efficiency voltage mode
synchronous buck converter which operates from 4.5 V to 23 V input
and generates output voltages down to 0.6 V at up to 15 A continuous
current. It has two operation modes: FCCM and automatic
CCM/DCM. In automatic CCM/DCM mode, the controller can switch
smoothly between CCM and DCM, where converter runs at reduced
switching frequency to achieve much higher efficiency at light load.
The NCP3235 is available in 6 mm x 6 mm QFN−40 pin package.
www.onsemi.com
MARKING
DIAGRAM
1
Features
1
40
NCP3235
AWLYYWWG
• Wide Input Voltage Range from 4.5 V to 23 V
• 0.6 V Internal Reference Voltage
• Switching Frequency Option: 550 kHz, 1.1 MHz
• External Programmable Soft−Start
• Lossless Low−side FET Current Sensing
• Output Over−voltage Protection and Under−voltage Protection
• Selective Hiccup/Latch Off Operation for All Faults
• Pre−bias Start−up
QFN40 6x6, 0.5P
CASE 485CM
A
= Assembly Location
= Wafer Lot
WL
YY
WW
G
= Year
= Work Week
= Pb−Free Package
• Adjustable Output Voltage
PIN CONNECTIONS
• Power Good Output
• Internal Over−temperature Protection
• Adjustable Input UVLO
• This is a Pb−Free Device
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
VIN
VIN
EN
VCC
Typical Application
VIN
GND
VIN
VB
• Industry PC Equipment
EP42
EP41
VIN
AGND
BST
• ASIC, FPGA, DSP and CPU Core and I/O Supplies
• Server and Storage System
VSWH
PGND
PGND
PGND
PGND
PGND
VSW
VSWH
VSWH
VSWH
VSWH
• Telecom and Network Equipment
VSWH
EP43
(Top View)
ORDERING INFORMATION
†
Device
NCP3235MNTXG
Package
Shipping
QFN−40
2500 /
(Pb−Free)
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, 2016
1
Publication Order Number:
May, 2016 − Rev. 0
NCP3235/D