參數(shù)資料
型號(hào): AOZ1020-EVA
廠商: ALPHA
英文描述: EZBuck⑩ 2A Simple Buck Regulator Evaluation Board Note
中文描述: EZBuck⑩甲簡(jiǎn)單降壓穩(wěn)壓器評(píng)估板說(shuō)明
文件頁(yè)數(shù): 1/4頁(yè)
文件大?。?/td> 216K
代理商: AOZ1020-EVA
Rev. 1.0 December 2007
www.aosmd.com
Page 1 of 4
AOZ1020-EVA
EZBuck 2A Simple Buck Regulator
Evaluation Board Note
General Description
The AOZ1020 evaluation board is a fully assembled and
tested circuit board built with the AOZ1020 buck regulator
IC. It outputs a preset or adjustable voltage at up to 2A 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 AOZ1020-EVA circuit has features like 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 AOZ1020 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 is preset to 3.3V and adjustable down
to 0.8V
2A 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
Figure 1.
LX
PG
VIN
VIN
5V
VOUT
FB
PGND
EN
COMP
AGND
C2, C3
22μF Ceramic
R1
R3
R2
10k
C
C
R
C
C6
C4
C1
22μF Ceramic
C5
L1
4.7μH
AOZ1020
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