NCP6334B Datasheet, PDF (1/14 Pages) ON Semiconductor – 3MHz, 2A Synchronous Buck Converter

NCP6334B, NCP6334C
3MHz, 2A Synchronous
Buck Converter
High Efficiency, Low Ripple, Adjustable
Output Voltage
The NCP6334B/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. Operation with 3 MHz switching frequency allows
employing small size inductor and capacitors. Input supply voltage
feedforward control is employed to deal with wide input voltage
range. Synchronous rectification and automatic PWM/PFM power
save mode offer improved system efficiency. The NCP6334B/C is in a
space saving, low profile 2.0 x 2.0 x 0.75 mm WDFN−8 package.
Features
• 2.3 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 (NCP6334B) or External Mode Selection
(NCP6334C)
• Enable Input
• Power Good Output Option (NCP6334B)
• Soft Start
• Over Current Protection
• Active Discharge When Disabled
• Thermal Shutdown Protection
• WDFN−8, 2 x 2 mm, 0.5 mm Pitch Package
• Maximum 0.8mm Height for Super Thin Applications
• This is a Pb−Free Device
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
http://onsemi.com
MARKING
DIAGRAM
1
WDFN8
CASE 511BE
1
Ax MG
G
Ax = Specific Device Code
M = Date Code
G = Pb−Free Package
(*Note: Microdot may be in either location)
PGND 1
SW 2
AGND 3
FB 4
PINOUT
9
(Top View)
8 PVIN
7 AVIN
6 MODE/PG
5 EN
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 2 of this data sheet.
© Semiconductor Components Industries, LLC, 2012
1
May, 2012 − Rev. 2
Publication Order Number:
NCP6334B/D