Buck Regulator. AOZ3015AI Datasheet

AOZ3015AI Regulator. Datasheet pdf. Equivalent

Part AOZ3015AI
Description 3A Synchronous Buck Regulator
Feature AOZ3015AI EZBuck™ 3 A Synchronous Buck Regulator General Description The AOZ3015AI is a high effici.
Manufacture Alpha & Omega Semiconductors
Datasheet
Download AOZ3015AI Datasheet

AOZ3015AI EZBuck™ 3 A Synchronous Buck Regulator General De AOZ3015AI Datasheet
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AOZ3015AI
AOZ3015AI
EZBuck™ 3 A Synchronous Buck Regulator
General Description
The AOZ3015AI is a high efficiency, easy to use, 3 A
synchronous buck regulator. The AOZ3015AI works from
4.5 V to 18 V input voltage range, and provides up to 3 A
of continuous output current with an output voltage
adjustable down to 0.8 V.
The AOZ3015AI comes in a SO-8 package and is rated
over a -40 °C to +85 °C operating ambient temperature
range.
Features
4.5 V to 18 V operating input voltage range
Synchronous Buck: 65 minternal high-side switch
and 30 minternal low-side switch (at 12 V)
PEM (pulse energy mode) enables >80% efficiency
with IOUT = 10 mA (VIN = 12 V, VOUT = 5 V)
Up to 95 % efficiency
Internal soft start
Output voltage adjustable to 0.8 V
3 A continuous output current
500 kHz PWM operation
Cycle-by-cycle current limit
Pre-bias start-up
Short-circuit protection
Thermal shutdown
SO-8 package
Applications
Point of load DC/DC converters
LCD TV
Set top boxes
DVD and Blu-ray players/recorders
Cable modems
Typical Application
VIN
C1
10µF
RC
CC
CCC
VIN VCC
EN
AOZ3015AI LX
COMP
AGND
FB
PGND
L1
VOUT
R1
C2, C3
22µF
R2
Rev. 1.1 June 2013
Figure 1. 3 A Synchronous Buck Regulator, Fs = 500 kHz
www.aosmd.com
Page 1 of 14



AOZ3015AI
Ordering Information
Part Number
AOZ3015AI
Ambient Temperature Range
-40 °C to +85 °C
Package
SO-8
AOS Green Products use reduced levels of Halogens, and are also RoHS compliant.
Please visit www.aosmd.com/media/AOSGreenPolicy.pdf for additional information.
Pin Configuration
PGND 1
VIN 2
AGND 3
VCC 4
8 EN
7 LX
6 COMP
5 FB
SO-8
(Top View)
AOZ3015AI
Environmental
Green Product
Pin Description
Pin Number
1
2
Pin Name
PGND
VIN
3 AGND
4 VCC
5 FB
6 COMP
7 LX
8 EN
Pin Function
Power ground. PGND needs to be electrically connected to AGND.
Supply voltage input. When VIN rises above the UVLO threshold and EN is logic high,
the device starts up.
Analog ground. AGND is the reference point for controller section. AGND needs to be
electrically connected to PGND.
Internal LDO output.
Feedback input. The FB pin is used to set the output voltage via a resistive voltage divider
between the output and AGND.
External loop compensation pin. Connect a RC network between COMP and AGND to
compensate the control loop.
Switching node. LX is the drain of the internal power FETs.
Enable pin. Pull EN to logic high to enable the device. Pull EN to logic low to disable the
device. If on/off control in not needed, connect EN to VIN and do not leave it open.
Rev. 1.1 June 2013
www.aosmd.com
Page 2 of 14





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