NCP3135: 2.9V to 5.5V, 5A Integrated Synchronous DC-DC Step Down Converter

NCP3135 is a fully integrated synchronous buck converter capable of delivering up to 5A. The device operates from 2.9V to 5.5V, making them ideal for 3.3V and 5V bus applications. The NCP3135 offers high efficiency, fast load transient response, and can operate in CCM/DCM (automatic continuous/discontinuous modes) or FCCM (forced continuous conduction mode). High switching frequency reduces the output filter size. The device offers enable and power good indicator that can be used for sequencing. The NCP3135 is offered in a small 3mm x 3mm QFN package.

Features

Automatic DCM/CCM and FCCM operating modes
1.1MHz Switching Frequency
3mm by 3mm QFN package
Output range from 0.6V to 0.84Vin
Over/Undervoltage, Overcurrent, and Overtemperature protection
Internal 1ms soft start
Safe start up into prebias output
Up to 5A continuous current

Benefits

Improve efficiency at light loads or use fixed frequency operating mode
High switching frequency to minimize passives (inductor, capacitors)
Small size reduce board space. QFN thermally enhance for power dissipation
Flexibility allows same device for multiple applications
Protect IC against faults
Reduce inrush current during start up
Prevents reverse current flow from output capacitor

Applications

5V and 3.3V POL applications

End Products

servers/desktops/notebooks
solid state drives
base station/networking

Data Sheets (1)

Document Title	Document ID/Size	Revision	Revision Date
5 A Integrated Synchronous Buck Converter	NCP3135/D (141kB)	1	Jul, 2015

Evaluation Board Documents (4)

Document Title	Document ID/Size	Revision	Revision Date
NCP3135GEVB Bill Of Materials (ROHS Compliant)	NCP3135GEVB_BOM_ROHS.pdf (90kB)	0
NCP3135GEVB Gerber Layout Files (Zip Format)	NCP3135GEVB_GERBER.zip (184kB)	0
NCP3135GEVB Schematic	NCP3135GEVB_SCHEMATIC.pdf (131kB)	0
NCP3135GEVB Test Procedure	NCP3135GEVB_TEST_PROCEDURE.pdf (112kB)	0