AOZ3015PI. Z3015PI Datasheet

Z3015PI AOZ3015PI. Datasheet pdf. Equivalent

Part Z3015PI
Description AOZ3015PI
Feature AOZ3015PI EZBuck™ 3 A Synchronous Buck Regulator General Description The AOZ3015PI is a high effici.
Manufacture ALPHA & OMEGA
Datasheet
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AOZ3015PI EZBuck™ 3 A Synchronous Buck Regulator General De Z3015PI Datasheet
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Z3015PI
AOZ3015PI
EZBuck™ 3 A Synchronous Buck Regulator
General Description
The AOZ3015PI is a high efficiency, easy to use, 3 A
synchronous buck regulator. The AOZ3015PI 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 AOZ3015PI comes in an exposed pad 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: 85 minternal high-side switch
and 50 minternal low-side switch (at 12 V)
PEM (pulse energy mode) enables >85% efficiency
with IOUT = 10 mA (VIN = 12 V, VOUT = 5 V)
350 µA supply current under typical application
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
Exposed pad 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
CCC
VIN VCC
VOUT
EN
AOZ3015PI LX
COMP
RC
AGND
CC
FB
PGND
L1
VOUT
R1
C2, C3
22µF
R2
Figure 1. 3 A Synchronous Buck Regulator, Fs = 500 kHz
100
90
80
70
60
50
0.01
Rev. 2.0 July 2013
www.aosmd.com
Efficiency (VIN = 12V) vs. Load Current
5V OUTPUT
3.3V OUTPUT
2.5V OUTPUT
1.8V OUTPUT
0.1 1
Load Current (A)
10
Page 1 of 13



Z3015PI
Ordering Information
Part Number
AOZ3015PI
Ambient Temperature Range
-40 °C to +85 °C
Package
EPAD 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
PAD
(LX)
8 VOUT
7 EN
6 COMP
5 FB
Exposed Pad SO-8
(Top View)
AOZ3015PI
Environmental
Green Product
Pin Description
Pin Number
1
2
Pin Name
PGND
VIN
3 AGND
4 VCC
5 FB
6 COMP
7 EN
8
Exposed pad
VOUT
LX
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.
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.
VOUT sense pin for protection purposes.
Switching node. LX is the drain of the internal power FETs. LX is used as the thermal pad
of the power stage.
Rev. 2.0 July 2013
www.aosmd.com
Page 2 of 13





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