©
Semiconductor Components Industries, LLC, 2014
May, 2014
−
Rev. 0
1
Publication Order Number:
EVBUM2243/D
NCP6324GEVB
NCP6324B/C Evaluation
Board User's Manual
3 MHz, 2 A, High Efficiency, Low Ripple,
Adjustable Output Voltage, Synchronous
Buck Converter
Overview
This document is a manual file for a demo board of the
NCP6324B/C, which includes demo board schematics, bill
of materials, PCB layout, jumper setup, and test procedure.
About NCP6324B/C
The NCP6324B/C, a family of synchronous buck
converters, which is optimized to supply different sub
systems of portable applications powered by one cell Li-ion
or three cell Alkaline/NiCd/NiMH batteries. The devices are
able to deliver up to 2 A on an external adjustable voltage
range from 0.6 V to 3.3 V. Operation with 3 MHz switching
frequency allows employing small size inductor and
capacitors. Input supply voltage feed-forward control is
employed to deal with wide input voltage range.
Synchronous rectification and automatic PWM/PFM power
save mode offer improved system efficiency. The
NCP6324B is in a space saving, low profile
2.0
×
2.0
×
0.75 mm WDFN
−
8 package.
Features
•
2.5 V to 5.5 V Input Voltage Range
•
External Adjustable Voltage
•
Up to 2 A Output Current
•
3 MHz Switching Frequency
•
Synchronous Rectification
•
Automatic Power Save or External Mode Selection
•
Enable Input
•
Power Good Output
•
Soft Start
•
Over Current Protection
•
Active Discharge When Disabled. Hi
−
Z Version
Available upon Request
•
Thermal Shutdown Protection
•
WDFN
−
8, 2
×
2 mm, 0.5 mm Pitch Package
•
Maximum 0.8 mm Height for Super Thin Applications
Typical Applications
•
Cellular Phones, Smart Phones, and PDAs
•
Portable Media Players
•
Digital Still Cameras
•
Wireless and DSL Modems
•
USB Powered Devices
•
Point of Load
•
Game and Entertainment System
1uH
Vo = 0.6V to Vin
Cout
10uF
PGND
FB
PVIN
EN
SW
AGND
AVIN
MODE/
PG
Cin
10uF
Rpg
1M
Vin = 2.5V to 5.5V
Power Good
Enable
R1
R2
Cfb
NCP6324B
1uH
Vo = 0.6V to Vin
Cout
10uF
PGND
FB
PVIN
EN
SW
AGND
AVIN
MODE/
PG
Cin
10uF
Vin = 2.5V to 5.5V
Mode
Enable
R1
R2
Cfb
NCP6324C
(a) Power Good Output (NCP6324B)
(b) External Mode Selection
(NCP6324C Available upon Request)
Figure 1. Typical Application Circuits
EVAL BOARD USER’S MANUAL
http://onsemi.com
