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IC manufacturers Alpha & Omega Semiconductor

IC manufacturers (79)

Alpha & Omega Semiconductor AOZ1239PI

AOZ1239PI

Overview

Topology Buck Converter
Input voltage 5 V
Switching frequency 1000 kHz
Output 1 3.3 V / 6 A

Description

The AOZ1239 demo board is a fully assembled and tested circuit board built with the AOZ1238 buck regulator IC. It outputs an adjustable voltage up to 10A of continuous current. The evaluation board requires an input voltage from 4.5V to 28V. The output voltage is preset at 1.05V and can be adjusted down to 0.6V.

AOZ1238 operate at constant on-time mode. The demo board circuit operates at about 600KHz switching frequency. The frequency can be set by changing on-time setting. The AOZ1239-DEMO-02 circuit incorporates features like current limit, short circuit protection, Vcc under voltage lock out, output overvoltage protection and thermal shut down.

The AOZ1239-DEMO-02 demonstrates the COT buck converter design. Different output voltage designs need follow application note to change parameters.

Features

  • 4.5V to 28V operating input voltage range
  • 10A continuous output current
  • Output voltage adjustable to 0.6V±1.0%
  • Two bits VID control
  • Constant On-Time with input feed-forward
  • Programmable frequency up to 1MHz
  • Ceramic capacitor stable
  • Adjustable soft start
  • Internal 5.3V/20mA linear regulator
  • Power Good output
  • Integrated bootstrap diode
  • Cycle-by-cycle current limit
  • Short-circuit protection
  • Thermal shutdown
  • Thermally enhanced 5mmX5mm QFN-30L package

Typical applications

  • Graphics cards
  • Cable modems
  • Telecom/Networking/Datacom equipment
  • Point of load DC/DC converters
  • Compact desktop PCs
  • Portable computers
  • LCD TVs
  • Servers
  • Set top boxes

Products

Order Code Data­sheet Downloads Product series L
(µH)
IR
(A)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
Material Version Samples
7443550101
STE ALT EAG CAD LTS PSP SPE IGS CAD WE-HCI SMT Flat Wire High Current Inductor 10 8.5 7.8 10 14.1 18 WE-PERM SMT
Order Code Data­sheet
7443550101
Samples
Order Code Data­sheet Downloads Product series L
(µH)
IR
(A)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
Material Version Samples