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NCP3133A_16 Datasheet, PDF (1/13 Pages) ON Semiconductor – 3 A Integrated Synchronous Buck Converter | |||
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NCP3133A
3 A Integrated Synchronous
Buck Converter
NCP3133A is a fully integrated synchronous buck converter for
3.3 V and 5 V stepâdown applications. It can provide up to 3 A load
current. NCP3133A supports high efficiency, fast transient response
and provides power good indicator. The control scheme includes two
operation modes: FCCM and automatic CCM/DCM. In automatic
CCM/DCM mode, the controller can smoothly switch between CCM
and DCM, where converter runs at reduced switching frequency with
much higher efficiency. NCP3133A is available in 3 mm x 3 mm
QFNâ16 pin package.
Features
⢠High Efficiency in both CCM and DCM
⢠High Operation Frequency at 1.1 MHz
⢠Support MLCC Output Capacitor
⢠Small Footprint, 3 mm x 3 mm, 16âpin QFN Package
⢠Up to 3 A Continuous Output Current
⢠2.9 V to 5.5 V Wide Conversion Voltage Range
⢠Output Voltage Range from 0.6 V to 0.84 X Vin
⢠Internal 400 ms SoftâStart
⢠Automatic PowerâSaving Mode
⢠Voltage Mode Control
⢠Support Pre-bias Startâup Functionality
⢠Output Discharge Operation
⢠OverâTemperature Protection
⢠Builtâin OverâVoltage, UnderâVoltage and Over-Current Protection
⢠Power Good Indicator
⢠This is a PbâFree Device
Applications
⢠5 V Step Down Rail
⢠3.3 V Step Down Rail
www.onsemi.com
1
QFN16 3 x 3, 0.5P
CASE 485DA
SUGGESTED PIN ARRANGEMENT
PGND PGND VIN VIN
16 15 14 13
EN 1
12 VDD
NC 2
PGD 3
NCP3133A
11 AGND
10 FB
VBST 4
9 COMP
5678
SW SW SW PS
MARKING DIAGRAM
3133A
ALYWG
G
3133A
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbâFree Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 12 of this data sheet.
© Semiconductor Components Industries, LLC, 2016
1
April, 2016 â Rev. 2
Publication Order Number:
NCP3133A/D
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