AOZ1017-EVA Datasheet, PDF (1/4 Pages) Alpha & Omega Semiconductors – EZBuck™ 3A Simple Buck Regulator Evaluation Board Note

AOZ1017-EVA
EZBuck™ 3A Simple Buck Regulator
Evaluation Board Note
General Description
The AOZ1017 evaluation board is a fully assembled and
tested circuit board built with the AOZ1017 buck regulator
IC. It outputs a preset or adjustable voltage and up to 3A
of continuous current. The evaluation board requires an
input voltage from 4.5V to 16V. The output voltage is
preset and can be adjusted from 0.8V to V_IN–0.4V
The AOZ1017-EVA circuit features include; current limit,
short circuit protection, input under voltage lock out,
internal soft start and thermal shut down. It operates at a
fixed 500kHz switching frequency. The current mode
control and integrated internal MOSFET minimize
component count, board area and total cost.
The AOZ1017 comes in SO-8 packages and is rated over
a -40°C to +85°C ambient temperature range.
Features
● 4.5V to 16V operating input voltage range
● Output voltage was preset to 3.3V, adjustable down to
0.8V
● 3A continuous output current
● Fixed 500kHz PWM operation
● Internal soft start
● Cycle-by-cycle current limit
● Short-circuit protection
● Thermal shutdown
Applications
● Point of load DC/DC conversion
● PCIe graphics cards
● Set top boxes
● DVD drives and HDD
● LCD panels
● Cable modems
● Telecom/networking/datacom equipment
Evaluation Board Schematic
VIN
C1
22µF
C6
NC
VIN
From µPC
EN
U1
L1
AOZ1017 ^LX
VOUT
R_C
COMP
FB
C4
NU
R1
C2
22µF
C3
22µF
C5
C_C
1000pF
AGND GND
D1
R2
10kΩ
Figure 1.
Rev. 1.0 October 2007
www.aosmd.com
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