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PDF AOZ1019 Data sheet ( Hoja de datos )
| Número de pieza | AOZ1019 | |
| Descripción | EZBuck 2A Simple Regulator | |
| Fabricantes | Alpha and Omega Semiconductors | |
| Logotipo |  |
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AOZ1019
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EZBuck™ 2A Simple Regulator
General Description
The AOZ1019 is a high efficiency, simple to use, 2A buck
regulator. The AOZ1019 works from a 4.5V to 16V input
voltage range, and provides up to 2A of continuous
output current with an output voltage adjustable down to
0.8V.
The AOZ1019 comes in an SO-8 package and is rated
over a -40°C to +85°C ambient temperature range.
Features
● 4.5V to 16V operating input voltage range
● 130mΩ internal PFET switch for high efficiency:
up to 95%
● Internal soft start
● Output voltage adjustable to 0.8V
● 2A continuous output current
● Fixed 500kHz PWM operation
● Cycle-by-cycle current limit
● Short-circuit protection
● Under voltage lockout
● Output over voltage protection
● Thermal shutdown
● Small size SO-8 package
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
Typical Application
VIN
C1
22µF
Ceramic
VIN
R2
20kΩ
C5
1nF
EN
AOZ1019
COMP
LX
FB
C2 AGND PGND
L1
4.7µH
VOUT
R2
C4, C6
22µF
Ceramic
R3
Rev. 1.0 September 2007
Figure 1. 3.3V/2A Buck Regulator
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Page 1 of 14
1 page  
AOZ1019
Typical Performance Characteristics (Continued)
Circuit of Figure 1. TA = 25°C, VIN = VEN = 12V, VOUT = 3.3V unless otherwise specified.
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Short Circuit Protection
Short Circuit Recovery
Vo
2V/div
Vo
2V/div
IL
1A/div
IL
1A/div
100µs/div
100
95
90
85
1ms/div
AOZ1019AI Efficiency
Efficiency (VIN = 12V) vs. Load Current
8.0V OUTPUT
5.0V OUTPUT
3.3V OUTPUT
80
75
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Note:
Load Current (A)
4. Thermal de-rating curves for SO-8 package part under typical input and output condition
based on the evaluation board. 25°C ambient temperature and natural convection
(air speed <50LFM) unless otherwise specified.
Derating Curve at 5V Input
2.5
1.8V, 3.3V, 5V OUTPUT
2.0
1.5
1.0
0.5
0
25
air speed less than 50lfm
35 45 55 65 75
Ambient Temperature (TA)
85
Derating Curve at 12V Input
2.5
1.8V, 3.3V, 5V, 8V OUTPUT
2.0
1.5
1.0
0.5
0
25
air speed less than 50lfm
35 45 55 65 75
Ambient Temperature (TA)
85
Rev. 1.0 September 2007
www.aosmd.com
Page 5 of 14
5 Page 
AOZ1019
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Figure 3. AOZ1019 PCB Layout
Rev. 1.0 September 2007
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Page 11 of 14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AOZ1019.PDF ] | |
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