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ON Semiconductor - Synchronous Buck Controller

Numéro de référence NCP5269A
Description Synchronous Buck Controller
Fabricant ON Semiconductor 
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NCP5269A fiche technique
NCP5269A
Advance Information
Synchronous Buck
Controller with Auto Power
Saving Mode and 2‐bit VID
Inputs for System Agent
NCP5269A is a synchronous buck controller that is optimized for
converting the battery voltage or adaptor voltage into power supply
rails required in notebook and desktop system. NCP5269A is designed
for applications requiring dynamically selected slew-rate controlled
output voltages. The soft-start is programmed by a single capacitor.
Voltage identification logic-inputs select four resistor programmed
set-point reference voltages that directly set the output voltage of the
converter between 0.65 V to 1.5 V. NCP5269A supports high
efficiency, fast transient response and provides power good signal.
ON Semiconductor proprietary adaptive-ripple control enables
seamless transition from CCM to DCM, where converter runs at
reduced switching frequency with much higher efficiency. The part
operates with input voltage ranging from 3.3 V to 28 V. NCP5269A is
available in a 20-pin 3 mm × 3 mm QFN package.
Features
Wide Input Voltage Range: from 3.3 V to 28 V
Three Selectable Fixed Frequency 300 kHz, 400 kHz or 600 kHz
2-bit VID Selects Four Independent Voltages from 0.65 V to 1.5 V
±1.0% System Accuracy
Differential Remote Output Voltage Sensing
Soft Transient Control Reduces Inrush Current and Audio Noise
Build-in Power-good Masking Supports Voltage Identification (VID)
On-the-Fly Transients
Simple Resistor Programming Voltage Levels
Programmable Soft-start through a Single Capacitor
Automatic Power-saving Mode
Input Supply Voltage Feed Forward Control
Resistive or Lossless Inductor’s DCR Current Sensing
Over-temperature Protection
Built-in Adaptive Gate Drivers
Output Discharge Operation
Built-in Over-voltage, Under-voltage and Over-current Protection
and Power Good Output
This is a Pb-Free Device
Applications
Notebooks, Desktops & Servers
I/O Supplies
System Power Supplies
Graphic Cards
This document contains information on a new product. Specifications and information
herein are subject to change without notice.
http://onsemi.com
QFN20
CASE 485BC
MARKING DIAGRAM
5269A
ALYWG
G
5269A
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
EN
VCC
VID1
VID0
V3
1
AGND
BST
GH
SWN
VCCP
GL/FSET
(Top View)
ORDERING INFORMATION
Device
NCP5269AMNTWG
Package
QFN20
(PbFree)
Shipping
3,000 /
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, 2013
June, 2013 Rev. P1
1
Publication Order Number:
NCP5269A/D

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